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-rw-r--r--drivers/usb/storage/alauda.c1
-rw-r--r--drivers/usb/storage/cypress_atacb.c1
-rw-r--r--drivers/usb/storage/datafab.c1
-rw-r--r--drivers/usb/storage/ene_ub6250.c27
-rw-r--r--drivers/usb/storage/freecom.c1
-rw-r--r--drivers/usb/storage/isd200.c1
-rw-r--r--drivers/usb/storage/jumpshot.c1
-rw-r--r--drivers/usb/storage/karma.c1
-rw-r--r--drivers/usb/storage/onetouch.c1
-rw-r--r--drivers/usb/storage/realtek_cr.c15
-rw-r--r--drivers/usb/storage/scsiglue.c55
-rw-r--r--drivers/usb/storage/sddr09.c1
-rw-r--r--drivers/usb/storage/sddr55.c1
-rw-r--r--drivers/usb/storage/shuttle_usbat.c1
-rw-r--r--drivers/usb/storage/transport.c3
-rw-r--r--drivers/usb/storage/transport.h39
-rw-r--r--drivers/usb/storage/uas.c328
-rw-r--r--drivers/usb/storage/usb.c111
-rw-r--r--drivers/usb/storage/usb.h7
19 files changed, 334 insertions, 262 deletions
diff --git a/drivers/usb/storage/alauda.c b/drivers/usb/storage/alauda.c
index 51af2fee2ef..bab8c8fe829 100644
--- a/drivers/usb/storage/alauda.c
+++ b/drivers/usb/storage/alauda.c
@@ -1276,6 +1276,7 @@ static struct usb_driver alauda_driver = {
.post_reset = usb_stor_post_reset,
.id_table = alauda_usb_ids,
.soft_unbind = 1,
+ .no_dynamic_id = 1,
};
module_usb_driver(alauda_driver);
diff --git a/drivers/usb/storage/cypress_atacb.c b/drivers/usb/storage/cypress_atacb.c
index 387cbd47acc..5fe451d16e6 100644
--- a/drivers/usb/storage/cypress_atacb.c
+++ b/drivers/usb/storage/cypress_atacb.c
@@ -272,6 +272,7 @@ static struct usb_driver cypress_driver = {
.post_reset = usb_stor_post_reset,
.id_table = cypress_usb_ids,
.soft_unbind = 1,
+ .no_dynamic_id = 1,
};
module_usb_driver(cypress_driver);
diff --git a/drivers/usb/storage/datafab.c b/drivers/usb/storage/datafab.c
index 15d41f2b3d6..35e9c51e669 100644
--- a/drivers/usb/storage/datafab.c
+++ b/drivers/usb/storage/datafab.c
@@ -751,6 +751,7 @@ static struct usb_driver datafab_driver = {
.post_reset = usb_stor_post_reset,
.id_table = datafab_usb_ids,
.soft_unbind = 1,
+ .no_dynamic_id = 1,
};
module_usb_driver(datafab_driver);
diff --git a/drivers/usb/storage/ene_ub6250.c b/drivers/usb/storage/ene_ub6250.c
index a6ade4071a9..e7e67810950 100644
--- a/drivers/usb/storage/ene_ub6250.c
+++ b/drivers/usb/storage/ene_ub6250.c
@@ -674,7 +674,7 @@ static int sd_scsi_read(struct us_data *us, struct scsi_cmnd *srb)
memset(bcb, 0, sizeof(struct bulk_cb_wrap));
bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
bcb->DataTransferLength = blenByte;
- bcb->Flags = 0x80;
+ bcb->Flags = US_BULK_FLAG_IN;
bcb->CDB[0] = 0xF1;
bcb->CDB[5] = (unsigned char)(bnByte);
bcb->CDB[4] = (unsigned char)(bnByte>>8);
@@ -858,7 +858,7 @@ static int ms_read_readpage(struct us_data *us, u32 PhyBlockAddr,
memset(bcb, 0, sizeof(struct bulk_cb_wrap));
bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
bcb->DataTransferLength = 0x200;
- bcb->Flags = 0x80;
+ bcb->Flags = US_BULK_FLAG_IN;
bcb->CDB[0] = 0xF1;
bcb->CDB[1] = 0x02; /* in init.c ENE_MSInit() is 0x01 */
@@ -877,7 +877,7 @@ static int ms_read_readpage(struct us_data *us, u32 PhyBlockAddr,
memset(bcb, 0, sizeof(struct bulk_cb_wrap));
bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
bcb->DataTransferLength = 0x4;
- bcb->Flags = 0x80;
+ bcb->Flags = US_BULK_FLAG_IN;
bcb->CDB[0] = 0xF1;
bcb->CDB[1] = 0x03;
@@ -1170,7 +1170,7 @@ static int ms_read_eraseblock(struct us_data *us, u32 PhyBlockAddr)
memset(bcb, 0, sizeof(struct bulk_cb_wrap));
bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
bcb->DataTransferLength = 0x200;
- bcb->Flags = 0x80;
+ bcb->Flags = US_BULK_FLAG_IN;
bcb->CDB[0] = 0xF2;
bcb->CDB[1] = 0x06;
bcb->CDB[4] = (unsigned char)(bn);
@@ -1249,7 +1249,7 @@ static int ms_lib_overwrite_extra(struct us_data *us, u32 PhyBlockAddr,
memset(bcb, 0, sizeof(struct bulk_cb_wrap));
bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
bcb->DataTransferLength = 0x4;
- bcb->Flags = 0x80;
+ bcb->Flags = US_BULK_FLAG_IN;
bcb->CDB[0] = 0xF2;
bcb->CDB[1] = 0x05;
bcb->CDB[5] = (unsigned char)(PageNum);
@@ -1331,7 +1331,7 @@ static int ms_lib_read_extra(struct us_data *us, u32 PhyBlock,
memset(bcb, 0, sizeof(struct bulk_cb_wrap));
bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
bcb->DataTransferLength = 0x4;
- bcb->Flags = 0x80;
+ bcb->Flags = US_BULK_FLAG_IN;
bcb->CDB[0] = 0xF1;
bcb->CDB[1] = 0x03;
bcb->CDB[5] = (unsigned char)(PageNum);
@@ -1533,7 +1533,7 @@ static int ms_lib_read_extrablock(struct us_data *us, u32 PhyBlock,
memset(bcb, 0, sizeof(struct bulk_cb_wrap));
bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
bcb->DataTransferLength = 0x4 * blen;
- bcb->Flags = 0x80;
+ bcb->Flags = US_BULK_FLAG_IN;
bcb->CDB[0] = 0xF1;
bcb->CDB[1] = 0x03;
bcb->CDB[5] = (unsigned char)(PageNum);
@@ -1650,7 +1650,7 @@ static int ms_scsi_read(struct us_data *us, struct scsi_cmnd *srb)
memset(bcb, 0, sizeof(struct bulk_cb_wrap));
bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
bcb->DataTransferLength = blenByte;
- bcb->Flags = 0x80;
+ bcb->Flags = US_BULK_FLAG_IN;
bcb->CDB[0] = 0xF1;
bcb->CDB[1] = 0x02;
bcb->CDB[5] = (unsigned char)(bn);
@@ -1694,7 +1694,7 @@ static int ms_scsi_read(struct us_data *us, struct scsi_cmnd *srb)
memset(bcb, 0, sizeof(struct bulk_cb_wrap));
bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
bcb->DataTransferLength = 0x200 * len;
- bcb->Flags = 0x80;
+ bcb->Flags = US_BULK_FLAG_IN;
bcb->CDB[0] = 0xF1;
bcb->CDB[1] = 0x02;
bcb->CDB[5] = (unsigned char)(blkno);
@@ -1827,7 +1827,7 @@ static int ene_get_card_type(struct us_data *us, u16 index, void *buf)
memset(bcb, 0, sizeof(struct bulk_cb_wrap));
bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
bcb->DataTransferLength = 0x01;
- bcb->Flags = 0x80;
+ bcb->Flags = US_BULK_FLAG_IN;
bcb->CDB[0] = 0xED;
bcb->CDB[2] = (unsigned char)(index>>8);
bcb->CDB[3] = (unsigned char)index;
@@ -2083,7 +2083,7 @@ static int ene_ms_init(struct us_data *us)
memset(bcb, 0, sizeof(struct bulk_cb_wrap));
bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
bcb->DataTransferLength = 0x200;
- bcb->Flags = 0x80;
+ bcb->Flags = US_BULK_FLAG_IN;
bcb->CDB[0] = 0xF1;
bcb->CDB[1] = 0x01;
@@ -2134,7 +2134,7 @@ static int ene_sd_init(struct us_data *us)
memset(bcb, 0, sizeof(struct bulk_cb_wrap));
bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
- bcb->Flags = 0x80;
+ bcb->Flags = US_BULK_FLAG_IN;
bcb->CDB[0] = 0xF2;
result = ene_send_scsi_cmd(us, FDIR_READ, NULL, 0);
@@ -2153,7 +2153,7 @@ static int ene_sd_init(struct us_data *us)
memset(bcb, 0, sizeof(struct bulk_cb_wrap));
bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
bcb->DataTransferLength = 0x200;
- bcb->Flags = 0x80;
+ bcb->Flags = US_BULK_FLAG_IN;
bcb->CDB[0] = 0xF1;
result = ene_send_scsi_cmd(us, FDIR_READ, &buf, 0);
@@ -2407,6 +2407,7 @@ static struct usb_driver ene_ub6250_driver = {
.post_reset = usb_stor_post_reset,
.id_table = ene_ub6250_usb_ids,
.soft_unbind = 1,
+ .no_dynamic_id = 1,
};
module_usb_driver(ene_ub6250_driver);
diff --git a/drivers/usb/storage/freecom.c b/drivers/usb/storage/freecom.c
index fa161574847..042cf9ef315 100644
--- a/drivers/usb/storage/freecom.c
+++ b/drivers/usb/storage/freecom.c
@@ -553,6 +553,7 @@ static struct usb_driver freecom_driver = {
.post_reset = usb_stor_post_reset,
.id_table = freecom_usb_ids,
.soft_unbind = 1,
+ .no_dynamic_id = 1,
};
module_usb_driver(freecom_driver);
diff --git a/drivers/usb/storage/isd200.c b/drivers/usb/storage/isd200.c
index bd550270083..31fa24e7e68 100644
--- a/drivers/usb/storage/isd200.c
+++ b/drivers/usb/storage/isd200.c
@@ -1566,6 +1566,7 @@ static struct usb_driver isd200_driver = {
.post_reset = usb_stor_post_reset,
.id_table = isd200_usb_ids,
.soft_unbind = 1,
+ .no_dynamic_id = 1,
};
module_usb_driver(isd200_driver);
diff --git a/drivers/usb/storage/jumpshot.c b/drivers/usb/storage/jumpshot.c
index a19211b5c26..e3b97383186 100644
--- a/drivers/usb/storage/jumpshot.c
+++ b/drivers/usb/storage/jumpshot.c
@@ -677,6 +677,7 @@ static struct usb_driver jumpshot_driver = {
.post_reset = usb_stor_post_reset,
.id_table = jumpshot_usb_ids,
.soft_unbind = 1,
+ .no_dynamic_id = 1,
};
module_usb_driver(jumpshot_driver);
diff --git a/drivers/usb/storage/karma.c b/drivers/usb/storage/karma.c
index e720f8ebdf9..a8708eae978 100644
--- a/drivers/usb/storage/karma.c
+++ b/drivers/usb/storage/karma.c
@@ -230,6 +230,7 @@ static struct usb_driver karma_driver = {
.post_reset = usb_stor_post_reset,
.id_table = karma_usb_ids,
.soft_unbind = 1,
+ .no_dynamic_id = 1,
};
module_usb_driver(karma_driver);
diff --git a/drivers/usb/storage/onetouch.c b/drivers/usb/storage/onetouch.c
index d75155c3820..886567a3806 100644
--- a/drivers/usb/storage/onetouch.c
+++ b/drivers/usb/storage/onetouch.c
@@ -312,6 +312,7 @@ static struct usb_driver onetouch_driver = {
.post_reset = usb_stor_post_reset,
.id_table = onetouch_usb_ids,
.soft_unbind = 1,
+ .no_dynamic_id = 1,
};
module_usb_driver(onetouch_driver);
diff --git a/drivers/usb/storage/realtek_cr.c b/drivers/usb/storage/realtek_cr.c
index 1f62723ef1a..63cf2822e29 100644
--- a/drivers/usb/storage/realtek_cr.c
+++ b/drivers/usb/storage/realtek_cr.c
@@ -219,7 +219,7 @@ static int rts51x_bulk_transport(struct us_data *us, u8 lun,
/* set up the command wrapper */
bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
bcb->DataTransferLength = cpu_to_le32(buf_len);
- bcb->Flags = (dir == DMA_FROM_DEVICE) ? 1 << 7 : 0;
+ bcb->Flags = (dir == DMA_FROM_DEVICE) ? US_BULK_FLAG_IN : 0;
bcb->Tag = ++us->tag;
bcb->Lun = lun;
bcb->Length = cmd_len;
@@ -305,7 +305,7 @@ static int rts51x_bulk_transport_special(struct us_data *us, u8 lun,
/* set up the command wrapper */
bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
bcb->DataTransferLength = cpu_to_le32(buf_len);
- bcb->Flags = (dir == DMA_FROM_DEVICE) ? 1 << 7 : 0;
+ bcb->Flags = (dir == DMA_FROM_DEVICE) ? US_BULK_FLAG_IN : 0;
bcb->Tag = ++us->tag;
bcb->Lun = lun;
bcb->Length = cmd_len;
@@ -507,9 +507,14 @@ static int __do_config_autodelink(struct us_data *us, u8 *data, u16 len)
{
int retval;
u8 cmnd[12] = {0};
+ u8 *buf;
US_DEBUGP("%s, addr = 0xfe47, len = %d\n", __FUNCTION__, len);
+ buf = kmemdup(data, len, GFP_NOIO);
+ if (!buf)
+ return USB_STOR_TRANSPORT_ERROR;
+
cmnd[0] = 0xF0;
cmnd[1] = 0x0E;
cmnd[2] = 0xfe;
@@ -517,7 +522,8 @@ static int __do_config_autodelink(struct us_data *us, u8 *data, u16 len)
cmnd[4] = (u8)(len >> 8);
cmnd[5] = (u8)len;
- retval = rts51x_bulk_transport_special(us, 0, cmnd, 12, data, len, DMA_TO_DEVICE, NULL);
+ retval = rts51x_bulk_transport_special(us, 0, cmnd, 12, buf, len, DMA_TO_DEVICE, NULL);
+ kfree(buf);
if (retval != USB_STOR_TRANSPORT_GOOD) {
return -EIO;
}
@@ -789,7 +795,7 @@ static void rts51x_suspend_timer_fn(unsigned long data)
rts51x_set_stat(chip, RTS51X_STAT_SS);
/* ignore mass storage interface's children */
pm_suspend_ignore_children(&us->pusb_intf->dev, true);
- usb_autopm_put_interface(us->pusb_intf);
+ usb_autopm_put_interface_async(us->pusb_intf);
US_DEBUGP("%s: RTS51X_STAT_SS 01,"
"intf->pm_usage_cnt:%d, power.usage:%d\n",
__func__,
@@ -1100,6 +1106,7 @@ static struct usb_driver realtek_cr_driver = {
.id_table = realtek_cr_ids,
.soft_unbind = 1,
.supports_autosuspend = 1,
+ .no_dynamic_id = 1,
};
module_usb_driver(realtek_cr_driver);
diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c
index 13b8bcdf3db..a324a5d21e9 100644
--- a/drivers/usb/storage/scsiglue.c
+++ b/drivers/usb/storage/scsiglue.c
@@ -78,8 +78,6 @@ static const char* host_info(struct Scsi_Host *host)
static int slave_alloc (struct scsi_device *sdev)
{
- struct us_data *us = host_to_us(sdev->host);
-
/*
* Set the INQUIRY transfer length to 36. We don't use any of
* the extra data and many devices choke if asked for more or
@@ -104,18 +102,6 @@ static int slave_alloc (struct scsi_device *sdev)
*/
blk_queue_update_dma_alignment(sdev->request_queue, (512 - 1));
- /*
- * The UFI spec treates the Peripheral Qualifier bits in an
- * INQUIRY result as reserved and requires devices to set them
- * to 0. However the SCSI spec requires these bits to be set
- * to 3 to indicate when a LUN is not present.
- *
- * Let the scanning code know if this target merely sets
- * Peripheral Device Type to 0x1f to indicate no LUN.
- */
- if (us->subclass == USB_SC_UFI)
- sdev->sdev_target->pdt_1f_for_no_lun = 1;
-
return 0;
}
@@ -197,6 +183,9 @@ static int slave_configure(struct scsi_device *sdev)
* page x08, so we will skip it. */
sdev->skip_ms_page_8 = 1;
+ /* Some devices don't handle VPD pages correctly */
+ sdev->skip_vpd_pages = 1;
+
/* Some disks return the total number of blocks in response
* to READ CAPACITY rather than the highest block number.
* If this device makes that mistake, tell the sd driver. */
@@ -217,16 +206,6 @@ static int slave_configure(struct scsi_device *sdev)
if (sdev->scsi_level > SCSI_SPC_2)
us->fflags |= US_FL_SANE_SENSE;
- /* Some devices report a SCSI revision level above 2 but are
- * unable to handle the REPORT LUNS command (for which
- * support is mandatory at level 3). Since we already have
- * a Get-Max-LUN request, we won't lose much by setting the
- * revision level down to 2. The only devices that would be
- * affected are those with sparse LUNs. */
- if (sdev->scsi_level > SCSI_2)
- sdev->sdev_target->scsi_level =
- sdev->scsi_level = SCSI_2;
-
/* USB-IDE bridges tend to report SK = 0x04 (Non-recoverable
* Hardware Error) when any low-level error occurs,
* recoverable or not. Setting this flag tells the SCSI
@@ -283,6 +262,33 @@ static int slave_configure(struct scsi_device *sdev)
return 0;
}
+static int target_alloc(struct scsi_target *starget)
+{
+ struct us_data *us = host_to_us(dev_to_shost(starget->dev.parent));
+
+ /*
+ * Some USB drives don't support REPORT LUNS, even though they
+ * report a SCSI revision level above 2. Tell the SCSI layer
+ * not to issue that command; it will perform a normal sequential
+ * scan instead.
+ */
+ starget->no_report_luns = 1;
+
+ /*
+ * The UFI spec treats the Peripheral Qualifier bits in an
+ * INQUIRY result as reserved and requires devices to set them
+ * to 0. However the SCSI spec requires these bits to be set
+ * to 3 to indicate when a LUN is not present.
+ *
+ * Let the scanning code know if this target merely sets
+ * Peripheral Device Type to 0x1f to indicate no LUN.
+ */
+ if (us->subclass == USB_SC_UFI)
+ starget->pdt_1f_for_no_lun = 1;
+
+ return 0;
+}
+
/* queue a command */
/* This is always called with scsi_lock(host) held */
static int queuecommand_lck(struct scsi_cmnd *srb,
@@ -546,6 +552,7 @@ struct scsi_host_template usb_stor_host_template = {
.slave_alloc = slave_alloc,
.slave_configure = slave_configure,
+ .target_alloc = target_alloc,
/* lots of sg segments can be handled */
.sg_tablesize = SCSI_MAX_SG_CHAIN_SEGMENTS,
diff --git a/drivers/usb/storage/sddr09.c b/drivers/usb/storage/sddr09.c
index 425df7df2e5..3252a62b31b 100644
--- a/drivers/usb/storage/sddr09.c
+++ b/drivers/usb/storage/sddr09.c
@@ -1787,6 +1787,7 @@ static struct usb_driver sddr09_driver = {
.post_reset = usb_stor_post_reset,
.id_table = sddr09_usb_ids,
.soft_unbind = 1,
+ .no_dynamic_id = 1,
};
module_usb_driver(sddr09_driver);
diff --git a/drivers/usb/storage/sddr55.c b/drivers/usb/storage/sddr55.c
index e4ca5fcb7cc..c144078065a 100644
--- a/drivers/usb/storage/sddr55.c
+++ b/drivers/usb/storage/sddr55.c
@@ -1006,6 +1006,7 @@ static struct usb_driver sddr55_driver = {
.post_reset = usb_stor_post_reset,
.id_table = sddr55_usb_ids,
.soft_unbind = 1,
+ .no_dynamic_id = 1,
};
module_usb_driver(sddr55_driver);
diff --git a/drivers/usb/storage/shuttle_usbat.c b/drivers/usb/storage/shuttle_usbat.c
index 1369d259061..fa1ceebc465 100644
--- a/drivers/usb/storage/shuttle_usbat.c
+++ b/drivers/usb/storage/shuttle_usbat.c
@@ -1863,6 +1863,7 @@ static struct usb_driver usbat_driver = {
.post_reset = usb_stor_post_reset,
.id_table = usbat_usb_ids,
.soft_unbind = 1,
+ .no_dynamic_id = 1,
};
module_usb_driver(usbat_driver);
diff --git a/drivers/usb/storage/transport.c b/drivers/usb/storage/transport.c
index 0e5c91c6187..c70109e5d60 100644
--- a/drivers/usb/storage/transport.c
+++ b/drivers/usb/storage/transport.c
@@ -1071,7 +1071,8 @@ int usb_stor_Bulk_transport(struct scsi_cmnd *srb, struct us_data *us)
/* set up the command wrapper */
bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
bcb->DataTransferLength = cpu_to_le32(transfer_length);
- bcb->Flags = srb->sc_data_direction == DMA_FROM_DEVICE ? 1 << 7 : 0;
+ bcb->Flags = srb->sc_data_direction == DMA_FROM_DEVICE ?
+ US_BULK_FLAG_IN : 0;
bcb->Tag = ++us->tag;
bcb->Lun = srb->device->lun;
if (us->fflags & US_FL_SCM_MULT_TARG)
diff --git a/drivers/usb/storage/transport.h b/drivers/usb/storage/transport.h
index 242ff5e791a..9369d752d41 100644
--- a/drivers/usb/storage/transport.h
+++ b/drivers/usb/storage/transport.h
@@ -42,45 +42,6 @@
#include <linux/blkdev.h>
/*
- * Bulk only data structures
- */
-
-/* command block wrapper */
-struct bulk_cb_wrap {
- __le32 Signature; /* contains 'USBC' */
- __u32 Tag; /* unique per command id */
- __le32 DataTransferLength; /* size of data */
- __u8 Flags; /* direction in bit 0 */
- __u8 Lun; /* LUN normally 0 */
- __u8 Length; /* of of the CDB */
- __u8 CDB[16]; /* max command */
-};
-
-#define US_BULK_CB_WRAP_LEN 31
-#define US_BULK_CB_SIGN 0x43425355 /*spells out USBC */
-#define US_BULK_FLAG_IN 1
-#define US_BULK_FLAG_OUT 0
-
-/* command status wrapper */
-struct bulk_cs_wrap {
- __le32 Signature; /* should = 'USBS' */
- __u32 Tag; /* same as original command */
- __le32 Residue; /* amount not transferred */
- __u8 Status; /* see below */
- __u8 Filler[18];
-};
-
-#define US_BULK_CS_WRAP_LEN 13
-#define US_BULK_CS_SIGN 0x53425355 /* spells out 'USBS' */
-#define US_BULK_STAT_OK 0
-#define US_BULK_STAT_FAIL 1
-#define US_BULK_STAT_PHASE 2
-
-/* bulk-only class specific requests */
-#define US_BULK_RESET_REQUEST 0xff
-#define US_BULK_GET_MAX_LUN 0xfe
-
-/*
* usb_stor_bulk_transfer_xxx() return codes, in order of severity
*/
diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c
index a33ead5dce2..8ec8a6e66f5 100644
--- a/drivers/usb/storage/uas.c
+++ b/drivers/usb/storage/uas.c
@@ -13,7 +13,9 @@
#include <linux/types.h>
#include <linux/module.h>
#include <linux/usb.h>
+#include <linux/usb/hcd.h>
#include <linux/usb/storage.h>
+#include <linux/usb/uas.h>
#include <scsi/scsi.h>
#include <scsi/scsi_dbg.h>
@@ -22,49 +24,6 @@
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
-/* Common header for all IUs */
-struct iu {
- __u8 iu_id;
- __u8 rsvd1;
- __be16 tag;
-};
-
-enum {
- IU_ID_COMMAND = 0x01,
- IU_ID_STATUS = 0x03,
- IU_ID_RESPONSE = 0x04,
- IU_ID_TASK_MGMT = 0x05,
- IU_ID_READ_READY = 0x06,
- IU_ID_WRITE_READY = 0x07,
-};
-
-struct command_iu {
- __u8 iu_id;
- __u8 rsvd1;
- __be16 tag;
- __u8 prio_attr;
- __u8 rsvd5;
- __u8 len;
- __u8 rsvd7;
- struct scsi_lun lun;
- __u8 cdb[16]; /* XXX: Overflow-checking tools may misunderstand */
-};
-
-/*
- * Also used for the Read Ready and Write Ready IUs since they have the
- * same first four bytes
- */
-struct sense_iu {
- __u8 iu_id;
- __u8 rsvd1;
- __be16 tag;
- __be16 status_qual;
- __u8 status;
- __u8 rsvd7[7];
- __be16 len;
- __u8 sense[SCSI_SENSE_BUFFERSIZE];
-};
-
/*
* The r00-r01c specs define this version of the SENSE IU data structure.
* It's still in use by several different firmware releases.
@@ -79,18 +38,6 @@ struct sense_iu_old {
__u8 sense[SCSI_SENSE_BUFFERSIZE];
};
-enum {
- CMD_PIPE_ID = 1,
- STATUS_PIPE_ID = 2,
- DATA_IN_PIPE_ID = 3,
- DATA_OUT_PIPE_ID = 4,
-
- UAS_SIMPLE_TAG = 0,
- UAS_HEAD_TAG = 1,
- UAS_ORDERED_TAG = 2,
- UAS_ACA = 4,
-};
-
struct uas_dev_info {
struct usb_interface *intf;
struct usb_device *udev;
@@ -98,6 +45,8 @@ struct uas_dev_info {
unsigned cmd_pipe, status_pipe, data_in_pipe, data_out_pipe;
unsigned use_streams:1;
unsigned uas_sense_old:1;
+ struct scsi_cmnd *cmnd;
+ struct urb *status_urb; /* used only if stream support is available */
};
enum {
@@ -109,6 +58,9 @@ enum {
SUBMIT_DATA_OUT_URB = (1 << 5),
ALLOC_CMD_URB = (1 << 6),
SUBMIT_CMD_URB = (1 << 7),
+ COMPLETED_DATA_IN = (1 << 8),
+ COMPLETED_DATA_OUT = (1 << 9),
+ DATA_COMPLETES_CMD = (1 << 10),
};
/* Overrides scsi_pointer */
@@ -116,6 +68,7 @@ struct uas_cmd_info {
unsigned int state;
unsigned int stream;
struct urb *cmd_urb;
+ /* status_urb is used only if stream support isn't available */
struct urb *status_urb;
struct urb *data_in_urb;
struct urb *data_out_urb;
@@ -125,33 +78,43 @@ struct uas_cmd_info {
/* I hate forward declarations, but I actually have a loop */
static int uas_submit_urbs(struct scsi_cmnd *cmnd,
struct uas_dev_info *devinfo, gfp_t gfp);
+static void uas_do_work(struct work_struct *work);
+static DECLARE_WORK(uas_work, uas_do_work);
static DEFINE_SPINLOCK(uas_work_lock);
static LIST_HEAD(uas_work_list);
static void uas_do_work(struct work_struct *work)
{
struct uas_cmd_info *cmdinfo;
+ struct uas_cmd_info *temp;
struct list_head list;
+ int err;
spin_lock_irq(&uas_work_lock);
list_replace_init(&uas_work_list, &list);
spin_unlock_irq(&uas_work_lock);
- list_for_each_entry(cmdinfo, &list, list) {
+ list_for_each_entry_safe(cmdinfo, temp, &list, list) {
struct scsi_pointer *scp = (void *)cmdinfo;
struct scsi_cmnd *cmnd = container_of(scp,
struct scsi_cmnd, SCp);
- uas_submit_urbs(cmnd, cmnd->device->hostdata, GFP_NOIO);
+ err = uas_submit_urbs(cmnd, cmnd->device->hostdata, GFP_NOIO);
+ if (err) {
+ list_del(&cmdinfo->list);
+ spin_lock_irq(&uas_work_lock);
+ list_add_tail(&cmdinfo->list, &uas_work_list);
+ spin_unlock_irq(&uas_work_lock);
+ schedule_work(&uas_work);
+ }
}
}
-static DECLARE_WORK(uas_work, uas_do_work);
-
static void uas_sense(struct urb *urb, struct scsi_cmnd *cmnd)
{
struct sense_iu *sense_iu = urb->transfer_buffer;
struct scsi_device *sdev = cmnd->device;
+ struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp;
if (urb->actual_length > 16) {
unsigned len = be16_to_cpup(&sense_iu->len);
@@ -169,16 +132,15 @@ static void uas_sense(struct urb *urb, struct scsi_cmnd *cmnd)
}
cmnd->result = sense_iu->status;
- if (sdev->current_cmnd)
- sdev->current_cmnd = NULL;
- cmnd->scsi_done(cmnd);
- usb_free_urb(urb);
+ if (!(cmdinfo->state & DATA_COMPLETES_CMD))
+ cmnd->scsi_done(cmnd);
}
static void uas_sense_old(struct urb *urb, struct scsi_cmnd *cmnd)
{
struct sense_iu_old *sense_iu = urb->transfer_buffer;
struct scsi_device *sdev = cmnd->device;
+ struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp;
if (urb->actual_length > 8) {
unsigned len = be16_to_cpup(&sense_iu->len) - 2;
@@ -196,10 +158,8 @@ static void uas_sense_old(struct urb *urb, struct scsi_cmnd *cmnd)
}
cmnd->result = sense_iu->status;
- if (sdev->current_cmnd)
- sdev->current_cmnd = NULL;
- cmnd->scsi_done(cmnd);
- usb_free_urb(urb);
+ if (!(cmdinfo->state & DATA_COMPLETES_CMD))
+ cmnd->scsi_done(cmnd);
}
static void uas_xfer_data(struct urb *urb, struct scsi_cmnd *cmnd,
@@ -208,7 +168,7 @@ static void uas_xfer_data(struct urb *urb, struct scsi_cmnd *cmnd,
struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp;
int err;
- cmdinfo->state = direction | SUBMIT_STATUS_URB;
+ cmdinfo->state = direction;
err = uas_submit_urbs(cmnd, cmnd->device->hostdata, GFP_ATOMIC);
if (err) {
spin_lock(&uas_work_lock);
@@ -221,27 +181,61 @@ static void uas_xfer_data(struct urb *urb, struct scsi_cmnd *cmnd,
static void uas_stat_cmplt(struct urb *urb)
{
struct iu *iu = urb->transfer_buffer;
- struct scsi_device *sdev = urb->context;
- struct uas_dev_info *devinfo = sdev->hostdata;
+ struct Scsi_Host *shost = urb->context;
+ struct uas_dev_info *devinfo = (void *)shost->hostdata[0];
struct scsi_cmnd *cmnd;
+ struct uas_cmd_info *cmdinfo;
u16 tag;
+ int ret;
if (urb->status) {
dev_err(&urb->dev->dev, "URB BAD STATUS %d\n", urb->status);
- usb_free_urb(urb);
+ if (devinfo->use_streams)
+ usb_free_urb(urb);
return;
}
tag = be16_to_cpup(&iu->tag) - 1;
- if (sdev->current_cmnd)
- cmnd = sdev->current_cmnd;
+ if (tag == 0)
+ cmnd = devinfo->cmnd;
else
- cmnd = scsi_find_tag(sdev, tag);
- if (!cmnd)
+ cmnd = scsi_host_find_tag(shost, tag - 1);
+ if (!cmnd) {
+ if (devinfo->use_streams) {
+ usb_free_urb(urb);
+ return;
+ }
+ ret = usb_submit_urb(urb, GFP_ATOMIC);
+ if (ret)
+ dev_err(&urb->dev->dev, "failed submit status urb\n");
return;
+ }
+ cmdinfo = (void *)&cmnd->SCp;
switch (iu->iu_id) {
case IU_ID_STATUS:
+ if (devinfo->cmnd == cmnd)
+ devinfo->cmnd = NULL;
+
+ if (!(cmdinfo->state & COMPLETED_DATA_IN) &&
+ cmdinfo->data_in_urb) {
+ if (devinfo->use_streams) {
+ cmdinfo->state |= DATA_COMPLETES_CMD;
+ usb_unlink_urb(cmdinfo->data_in_urb);
+ } else {
+ usb_free_urb(cmdinfo->data_in_urb);
+ }
+ }
+ if (!(cmdinfo->state & COMPLETED_DATA_OUT) &&
+ cmdinfo->data_out_urb) {
+ if (devinfo->use_streams) {
+ cmdinfo->state |= DATA_COMPLETES_CMD;
+ usb_unlink_urb(cmdinfo->data_in_urb);
+ } else {
+ usb_free_urb(cmdinfo->data_out_urb);
+ }
+ }
+
if (urb->actual_length < 16)
devinfo->uas_sense_old = 1;
if (devinfo->uas_sense_old)
@@ -259,29 +253,70 @@ static void uas_stat_cmplt(struct urb *urb)
scmd_printk(KERN_ERR, cmnd,
"Bogus IU (%d) received on status pipe\n", iu->iu_id);
}
+
+ if (devinfo->use_streams) {
+ usb_free_urb(urb);
+ return;
+ }
+
+ ret = usb_submit_urb(urb, GFP_ATOMIC);
+ if (ret)
+ dev_err(&urb->dev->dev, "failed submit status urb\n");
}
-static void uas_data_cmplt(struct urb *urb)
+static void uas_data_out_cmplt(struct urb *urb)
{
- struct scsi_data_buffer *sdb = urb->context;
+ struct scsi_cmnd *cmnd = urb->context;
+ struct scsi_data_buffer *sdb = scsi_out(cmnd);
+ struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp;
+
+ cmdinfo->state |= COMPLETED_DATA_OUT;
+
sdb->resid = sdb->length - urb->actual_length;
usb_free_urb(urb);
+
+ if (cmdinfo->state & DATA_COMPLETES_CMD)
+ cmnd->scsi_done(cmnd);
+}
+
+static void uas_data_in_cmplt(struct urb *urb)
+{
+ struct scsi_cmnd *cmnd = urb->context;
+ struct scsi_data_buffer *sdb = scsi_in(cmnd);
+ struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp;
+
+ cmdinfo->state |= COMPLETED_DATA_IN;
+
+ sdb->resid = sdb->length - urb->actual_length;
+ usb_free_urb(urb);
+
+ if (cmdinfo->state & DATA_COMPLETES_CMD)
+ cmnd->scsi_done(cmnd);
}
static struct urb *uas_alloc_data_urb(struct uas_dev_info *devinfo, gfp_t gfp,
- unsigned int pipe, u16 stream_id,
- struct scsi_data_buffer *sdb,
- enum dma_data_direction dir)
+ unsigned int pipe, struct scsi_cmnd *cmnd,
+ enum dma_data_direction dir)
{
+ struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp;
struct usb_device *udev = devinfo->udev;
struct urb *urb = usb_alloc_urb(0, gfp);
+ struct scsi_data_buffer *sdb;
+ usb_complete_t complete_fn;
+ u16 stream_id = cmdinfo->stream;
if (!urb)
goto out;
- usb_fill_bulk_urb(urb, udev, pipe, NULL, sdb->length, uas_data_cmplt,
- sdb);
- if (devinfo->use_streams)
- urb->stream_id = stream_id;
+ if (dir == DMA_FROM_DEVICE) {
+ sdb = scsi_in(cmnd);
+ complete_fn = uas_data_in_cmplt;
+ } else {
+ sdb = scsi_out(cmnd);
+ complete_fn = uas_data_out_cmplt;
+ }
+ usb_fill_bulk_urb(urb, udev, pipe, NULL, sdb->length,
+ complete_fn, cmnd);
+ urb->stream_id = stream_id;
urb->num_sgs = udev->bus->sg_tablesize ? sdb->table.nents : 0;
urb->sg = sdb->table.sgl;
out:
@@ -289,7 +324,7 @@ static struct urb *uas_alloc_data_urb(struct uas_dev_info *devinfo, gfp_t gfp,
}
static struct urb *uas_alloc_sense_urb(struct uas_dev_info *devinfo, gfp_t gfp,
- struct scsi_cmnd *cmnd, u16 stream_id)
+ struct Scsi_Host *shost, u16 stream_id)
{
struct usb_device *udev = devinfo->udev;
struct urb *urb = usb_alloc_urb(0, gfp);
@@ -303,7 +338,7 @@ static struct urb *uas_alloc_sense_urb(struct uas_dev_info *devinfo, gfp_t gfp,
goto free;
usb_fill_bulk_urb(urb, udev, devinfo->status_pipe, iu, sizeof(*iu),
- uas_stat_cmplt, cmnd->device);
+ uas_stat_cmplt, shost);
urb->stream_id = stream_id;
urb->transfer_flags |= URB_FREE_BUFFER;
out:
@@ -334,7 +369,10 @@ static struct urb *uas_alloc_cmd_urb(struct uas_dev_info *devinfo, gfp_t gfp,
goto free;
iu->iu_id = IU_ID_COMMAND;
- iu->tag = cpu_to_be16(stream_id);
+ if (blk_rq_tagged(cmnd->request))
+ iu->tag = cpu_to_be16(cmnd->request->tag + 2);
+ else
+ iu->tag = cpu_to_be16(1);
iu->prio_attr = UAS_SIMPLE_TAG;
iu->len = len;
int_to_scsilun(sdev->lun, &iu->lun);
@@ -362,8 +400,8 @@ static int uas_submit_urbs(struct scsi_cmnd *cmnd,
struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp;
if (cmdinfo->state & ALLOC_STATUS_URB) {
- cmdinfo->status_urb = uas_alloc_sense_urb(devinfo, gfp, cmnd,
- cmdinfo->stream);
+ cmdinfo->status_urb = uas_alloc_sense_urb(devinfo, gfp,
+ cmnd->device->host, cmdinfo->stream);
if (!cmdinfo->status_urb)
return SCSI_MLQUEUE_DEVICE_BUSY;
cmdinfo->state &= ~ALLOC_STATUS_URB;
@@ -380,8 +418,8 @@ static int uas_submit_urbs(struct scsi_cmnd *cmnd,
if (cmdinfo->state & ALLOC_DATA_IN_URB) {
cmdinfo->data_in_urb = uas_alloc_data_urb(devinfo, gfp,
- devinfo->data_in_pipe, cmdinfo->stream,
- scsi_in(cmnd), DMA_FROM_DEVICE);
+ devinfo->data_in_pipe, cmnd,
+ DMA_FROM_DEVICE);
if (!cmdinfo->data_in_urb)
return SCSI_MLQUEUE_DEVICE_BUSY;
cmdinfo->state &= ~ALLOC_DATA_IN_URB;
@@ -398,8 +436,8 @@ static int uas_submit_urbs(struct scsi_cmnd *cmnd,
if (cmdinfo->state & ALLOC_DATA_OUT_URB) {
cmdinfo->data_out_urb = uas_alloc_data_urb(devinfo, gfp,
- devinfo->data_out_pipe, cmdinfo->stream,
- scsi_out(cmnd), DMA_TO_DEVICE);
+ devinfo->data_out_pipe, cmnd,
+ DMA_TO_DEVICE);
if (!cmdinfo->data_out_urb)
return SCSI_MLQUEUE_DEVICE_BUSY;
cmdinfo->state &= ~ALLOC_DATA_OUT_URB;
@@ -444,13 +482,13 @@ static int uas_queuecommand_lck(struct scsi_cmnd *cmnd,
BUILD_BUG_ON(sizeof(struct uas_cmd_info) > sizeof(struct scsi_pointer));
- if (!cmdinfo->status_urb && sdev->current_cmnd)
+ if (devinfo->cmnd)
return SCSI_MLQUEUE_DEVICE_BUSY;
if (blk_rq_tagged(cmnd->request)) {
- cmdinfo->stream = cmnd->request->tag + 1;
+ cmdinfo->stream = cmnd->request->tag + 2;
} else {
- sdev->current_cmnd = cmnd;
+ devinfo->cmnd = cmnd;
cmdinfo->stream = 1;
}
@@ -472,7 +510,8 @@ static int uas_queuecommand_lck(struct scsi_cmnd *cmnd,
}
if (!devinfo->use_streams) {
- cmdinfo->state &= ~(SUBMIT_DATA_IN_URB | SUBMIT_DATA_OUT_URB);
+ cmdinfo->state &= ~(SUBMIT_DATA_IN_URB | SUBMIT_DATA_OUT_URB |
+ ALLOC_STATUS_URB | SUBMIT_STATUS_URB);
cmdinfo->stream = 0;
}
@@ -551,7 +590,7 @@ static int uas_slave_configure(struct scsi_device *sdev)
{
struct uas_dev_info *devinfo = sdev->hostdata;
scsi_set_tag_type(sdev, MSG_ORDERED_TAG);
- scsi_activate_tcq(sdev, devinfo->qdepth - 1);
+ scsi_activate_tcq(sdev, devinfo->qdepth - 2);
return 0;
}
@@ -589,22 +628,34 @@ static int uas_is_interface(struct usb_host_interface *intf)
intf->desc.bInterfaceProtocol == USB_PR_UAS);
}
+static int uas_isnt_supported(struct usb_device *udev)
+{
+ struct usb_hcd *hcd = bus_to_hcd(udev->bus);
+
+ dev_warn(&udev->dev, "The driver for the USB controller %s does not "
+ "support scatter-gather which is\n",
+ hcd->driver->description);
+ dev_warn(&udev->dev, "required by the UAS driver. Please try an"
+ "alternative USB controller if you wish to use UAS.\n");
+ return -ENODEV;
+}
+
static int uas_switch_interface(struct usb_device *udev,
struct usb_interface *intf)
{
int i;
-
- if (uas_is_interface(intf->cur_altsetting))
- return 0;
+ int sg_supported = udev->bus->sg_tablesize != 0;
for (i = 0; i < intf->num_altsetting; i++) {
struct usb_host_interface *alt = &intf->altsetting[i];
- if (alt == intf->cur_altsetting)
- continue;
- if (uas_is_interface(alt))
+
+ if (uas_is_interface(alt)) {
+ if (!sg_supported)
+ return uas_isnt_supported(udev);
return usb_set_interface(udev,
alt->desc.bInterfaceNumber,
alt->desc.bAlternateSetting);
+ }
}
return -ENODEV;
@@ -619,6 +670,7 @@ static void uas_configure_endpoints(struct uas_dev_info *devinfo)
unsigned i, n_endpoints = intf->cur_altsetting->desc.bNumEndpoints;
devinfo->uas_sense_old = 0;
+ devinfo->cmnd = NULL;
for (i = 0; i < n_endpoints; i++) {
unsigned char *extra = endpoint[i].extra;
@@ -670,6 +722,40 @@ static void uas_configure_endpoints(struct uas_dev_info *devinfo)
}
}
+static int uas_alloc_status_urb(struct uas_dev_info *devinfo,
+ struct Scsi_Host *shost)
+{
+ if (devinfo->use_streams) {
+ devinfo->status_urb = NULL;
+ return 0;
+ }
+
+ devinfo->status_urb = uas_alloc_sense_urb(devinfo, GFP_KERNEL,
+ shost, 0);
+ if (!devinfo->status_urb)
+ goto err_s_urb;
+
+ if (usb_submit_urb(devinfo->status_urb, GFP_KERNEL))
+ goto err_submit_urb;
+
+ return 0;
+err_submit_urb:
+ usb_free_urb(devinfo->status_urb);
+err_s_urb:
+ return -ENOMEM;
+}
+
+static void uas_free_streams(struct uas_dev_info *devinfo)
+{
+ struct usb_device *udev = devinfo->udev;
+ struct usb_host_endpoint *eps[3];
+
+ eps[0] = usb_pipe_endpoint(udev, devinfo->status_pipe);
+ eps[1] = usb_pipe_endpoint(udev, devinfo->data_in_pipe);
+ eps[2] = usb_pipe_endpoint(udev, devinfo->data_out_pipe);
+ usb_free_streams(devinfo->intf, eps, 3, GFP_KERNEL);
+}
+
/*
* XXX: What I'd like to do here is register a SCSI host for each USB host in
* the system. Follow usb-storage's design of registering a SCSI host for
@@ -699,18 +785,33 @@ static int uas_probe(struct usb_interface *intf, const struct usb_device_id *id)
shost->max_id = 1;
shost->sg_tablesize = udev->bus->sg_tablesize;
- result = scsi_add_host(shost, &intf->dev);
+ devinfo->intf = intf;
+ devinfo->udev = udev;
+ uas_configure_endpoints(devinfo);
+
+ result = scsi_init_shared_tag_map(shost, devinfo->qdepth - 2);
if (result)
goto free;
+
+ result = scsi_add_host(shost, &intf->dev);
+ if (result)
+ goto deconfig_eps;
+
shost->hostdata[0] = (unsigned long)devinfo;
- devinfo->intf = intf;
- devinfo->udev = udev;
- uas_configure_endpoints(devinfo);
+ result = uas_alloc_status_urb(devinfo, shost);
+ if (result)
+ goto err_alloc_status;
scsi_scan_host(shost);
usb_set_intfdata(intf, shost);
return result;
+
+err_alloc_status:
+ scsi_remove_host(shost);
+ shost = NULL;
+deconfig_eps:
+ uas_free_streams(devinfo);
free:
kfree(devinfo);
if (shost)
@@ -732,18 +833,13 @@ static int uas_post_reset(struct usb_interface *intf)
static void uas_disconnect(struct usb_interface *intf)
{
- struct usb_device *udev = interface_to_usbdev(intf);
- struct usb_host_endpoint *eps[3];
struct Scsi_Host *shost = usb_get_intfdata(intf);
struct uas_dev_info *devinfo = (void *)shost->hostdata[0];
scsi_remove_host(shost);
-
- eps[0] = usb_pipe_endpoint(udev, devinfo->status_pipe);
- eps[1] = usb_pipe_endpoint(udev, devinfo->data_in_pipe);
- eps[2] = usb_pipe_endpoint(udev, devinfo->data_out_pipe);
- usb_free_streams(intf, eps, 3, GFP_KERNEL);
-
+ usb_kill_urb(devinfo->status_urb);
+ usb_free_urb(devinfo->status_urb);
+ uas_free_streams(devinfo);
kfree(devinfo);
}
diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c
index 3dd7da9fd50..c18538e4a6d 100644
--- a/drivers/usb/storage/usb.c
+++ b/drivers/usb/storage/usb.c
@@ -125,6 +125,9 @@ static struct us_unusual_dev us_unusual_dev_list[] = {
{ } /* Terminating entry */
};
+static struct us_unusual_dev for_dynamic_ids =
+ USUAL_DEV(USB_SC_SCSI, USB_PR_BULK, 0);
+
#undef UNUSUAL_DEV
#undef COMPLIANT_DEV
#undef USUAL_DEV
@@ -788,15 +791,19 @@ static void quiesce_and_remove_host(struct us_data *us)
struct Scsi_Host *host = us_to_host(us);
/* If the device is really gone, cut short reset delays */
- if (us->pusb_dev->state == USB_STATE_NOTATTACHED)
+ if (us->pusb_dev->state == USB_STATE_NOTATTACHED) {
set_bit(US_FLIDX_DISCONNECTING, &us->dflags);
+ wake_up(&us->delay_wait);
+ }
- /* Prevent SCSI-scanning (if it hasn't started yet)
- * and wait for the SCSI-scanning thread to stop.
+ /* Prevent SCSI scanning (if it hasn't started yet)
+ * or wait for the SCSI-scanning routine to stop.
*/
- set_bit(US_FLIDX_DONT_SCAN, &us->dflags);
- wake_up(&us->delay_wait);
- wait_for_completion(&us->scanning_done);
+ cancel_delayed_work_sync(&us->scan_dwork);
+
+ /* Balance autopm calls if scanning was cancelled */
+ if (test_bit(US_FLIDX_SCAN_PENDING, &us->dflags))
+ usb_autopm_put_interface_no_suspend(us->pusb_intf);
/* Removing the host will perform an orderly shutdown: caches
* synchronized, disks spun down, etc.
@@ -823,53 +830,28 @@ static void release_everything(struct us_data *us)
scsi_host_put(us_to_host(us));
}
-/* Thread to carry out delayed SCSI-device scanning */
-static int usb_stor_scan_thread(void * __us)
+/* Delayed-work routine to carry out SCSI-device scanning */
+static void usb_stor_scan_dwork(struct work_struct *work)
{
- struct us_data *us = (struct us_data *)__us;
+ struct us_data *us = container_of(work, struct us_data,
+ scan_dwork.work);
struct device *dev = &us->pusb_intf->dev;
- dev_dbg(dev, "device found\n");
-
- set_freezable();
+ dev_dbg(dev, "starting scan\n");
- /*
- * Wait for the timeout to expire or for a disconnect
- *
- * We can't freeze in this thread or we risk causing khubd to
- * fail to freeze, but we can't be non-freezable either. Nor can
- * khubd freeze while waiting for scanning to complete as it may
- * hold the device lock, causing a hang when suspending devices.
- * So instead of using wait_event_freezable(), explicitly test
- * for (DONT_SCAN || freezing) in interruptible wait and proceed
- * if any of DONT_SCAN, freezing or timeout has happened.
- */
- if (delay_use > 0) {
- dev_dbg(dev, "waiting for device to settle "
- "before scanning\n");
- wait_event_interruptible_timeout(us->delay_wait,
- test_bit(US_FLIDX_DONT_SCAN, &us->dflags) ||
- freezing(current), delay_use * HZ);
+ /* For bulk-only devices, determine the max LUN value */
+ if (us->protocol == USB_PR_BULK && !(us->fflags & US_FL_SINGLE_LUN)) {
+ mutex_lock(&us->dev_mutex);
+ us->max_lun = usb_stor_Bulk_max_lun(us);
+ mutex_unlock(&us->dev_mutex);
}
+ scsi_scan_host(us_to_host(us));
+ dev_dbg(dev, "scan complete\n");
- /* If the device is still connected, perform the scanning */
- if (!test_bit(US_FLIDX_DONT_SCAN, &us->dflags)) {
-
- /* For bulk-only devices, determine the max LUN value */
- if (us->protocol == USB_PR_BULK &&
- !(us->fflags & US_FL_SINGLE_LUN)) {
- mutex_lock(&us->dev_mutex);
- us->max_lun = usb_stor_Bulk_max_lun(us);
- mutex_unlock(&us->dev_mutex);
- }
- scsi_scan_host(us_to_host(us));
- dev_dbg(dev, "scan complete\n");
-
- /* Should we unbind if no devices were detected? */
- }
+ /* Should we unbind if no devices were detected? */
usb_autopm_put_interface(us->pusb_intf);
- complete_and_exit(&us->scanning_done, 0);
+ clear_bit(US_FLIDX_SCAN_PENDING, &us->dflags);
}
static unsigned int usb_stor_sg_tablesize(struct usb_interface *intf)
@@ -916,7 +898,7 @@ int usb_stor_probe1(struct us_data **pus,
init_completion(&us->cmnd_ready);
init_completion(&(us->notify));
init_waitqueue_head(&us->delay_wait);
- init_completion(&us->scanning_done);
+ INIT_DELAYED_WORK(&us->scan_dwork, usb_stor_scan_dwork);
/* Associate the us_data structure with the USB device */
result = associate_dev(us, intf);
@@ -947,7 +929,6 @@ EXPORT_SYMBOL_GPL(usb_stor_probe1);
/* Second part of general USB mass-storage probing */
int usb_stor_probe2(struct us_data *us)
{
- struct task_struct *th;
int result;
struct device *dev = &us->pusb_intf->dev;
@@ -988,20 +969,14 @@ int usb_stor_probe2(struct us_data *us)
goto BadDevice;
}
- /* Start up the thread for delayed SCSI-device scanning */
- th = kthread_create(usb_stor_scan_thread, us, "usb-stor-scan");
- if (IS_ERR(th)) {
- dev_warn(dev,
- "Unable to start the device-scanning thread\n");
- complete(&us->scanning_done);
- quiesce_and_remove_host(us);
- result = PTR_ERR(th);
- goto BadDevice;
- }
-
+ /* Submit the delayed_work for SCSI-device scanning */
usb_autopm_get_interface_no_resume(us->pusb_intf);
- wake_up_process(th);
+ set_bit(US_FLIDX_SCAN_PENDING, &us->dflags);
+ if (delay_use > 0)
+ dev_dbg(dev, "waiting for device to settle before scanning\n");
+ queue_delayed_work(system_freezable_wq, &us->scan_dwork,
+ delay_use * HZ);
return 0;
/* We come here if there are any problems */
@@ -1027,8 +1002,10 @@ EXPORT_SYMBOL_GPL(usb_stor_disconnect);
static int storage_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
+ struct us_unusual_dev *unusual_dev;
struct us_data *us;
int result;
+ int size;
/*
* If libusual is configured, let it decide whether a standard
@@ -1047,8 +1024,19 @@ static int storage_probe(struct usb_interface *intf,
* table, so we use the index of the id entry to find the
* corresponding unusual_devs entry.
*/
- result = usb_stor_probe1(&us, intf, id,
- (id - usb_storage_usb_ids) + us_unusual_dev_list);
+
+ size = ARRAY_SIZE(us_unusual_dev_list);
+ if (id >= usb_storage_usb_ids && id < usb_storage_usb_ids + size) {
+ unusual_dev = (id - usb_storage_usb_ids) + us_unusual_dev_list;
+ } else {
+ unusual_dev = &for_dynamic_ids;
+
+ US_DEBUGP("%s %s 0x%04x 0x%04x\n", "Use Bulk-Only transport",
+ "with the Transparent SCSI protocol for dynamic id:",
+ id->idVendor, id->idProduct);
+ }
+
+ result = usb_stor_probe1(&us, intf, id, unusual_dev);
if (result)
return result;
@@ -1074,7 +1062,6 @@ static struct usb_driver usb_storage_driver = {
.id_table = usb_storage_usb_ids,
.supports_autosuspend = 1,
.soft_unbind = 1,
- .no_dynamic_id = 1,
};
static int __init usb_stor_init(void)
diff --git a/drivers/usb/storage/usb.h b/drivers/usb/storage/usb.h
index 7b0f2113632..75f70f04f37 100644
--- a/drivers/usb/storage/usb.h
+++ b/drivers/usb/storage/usb.h
@@ -47,6 +47,7 @@
#include <linux/blkdev.h>
#include <linux/completion.h>
#include <linux/mutex.h>
+#include <linux/workqueue.h>
#include <scsi/scsi_host.h>
struct us_data;
@@ -72,7 +73,7 @@ struct us_unusual_dev {
#define US_FLIDX_DISCONNECTING 3 /* disconnect in progress */
#define US_FLIDX_RESETTING 4 /* device reset in progress */
#define US_FLIDX_TIMED_OUT 5 /* SCSI midlayer timed out */
-#define US_FLIDX_DONT_SCAN 6 /* don't scan (disconnect) */
+#define US_FLIDX_SCAN_PENDING 6 /* scanning not yet done */
#define US_FLIDX_REDO_READ10 7 /* redo READ(10) command */
#define US_FLIDX_READ10_WORKED 8 /* previous READ(10) succeeded */
@@ -147,8 +148,8 @@ struct us_data {
/* mutual exclusion and synchronization structures */
struct completion cmnd_ready; /* to sleep thread on */
struct completion notify; /* thread begin/end */
- wait_queue_head_t delay_wait; /* wait during scan, reset */
- struct completion scanning_done; /* wait for scan thread */
+ wait_queue_head_t delay_wait; /* wait during reset */
+ struct delayed_work scan_dwork; /* for async scanning */
/* subdriver information */
void *extra; /* Any extra data */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-28 22:36:59 +0000