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-rw-r--r--drivers/usb/host/Kconfig7
-rw-r--r--drivers/usb/host/ehci-hcd.c36
-rw-r--r--drivers/usb/host/ehci-q.c32
-rw-r--r--drivers/usb/host/ehci-sched.c2
-rw-r--r--drivers/usb/host/ehci.h39
-rw-r--r--drivers/usb/host/fhci-dbg.c2
-rw-r--r--drivers/usb/host/fhci-hcd.c4
-rw-r--r--drivers/usb/host/hwa-hc.c3
-rw-r--r--drivers/usb/host/isp116x-hcd.c2
-rw-r--r--drivers/usb/host/isp116x.h8
-rw-r--r--drivers/usb/host/isp1760-hcd.c25
-rw-r--r--drivers/usb/host/isp1760-hcd.h7
-rw-r--r--drivers/usb/host/isp1760-if.c95
-rw-r--r--drivers/usb/host/ohci-hcd.c5
-rw-r--r--drivers/usb/host/ohci-s3c2410.c6
-rw-r--r--drivers/usb/host/oxu210hp-hcd.c24
-rw-r--r--drivers/usb/host/oxu210hp.h8
-rw-r--r--drivers/usb/host/pci-quirks.c2
-rw-r--r--drivers/usb/host/r8a66597-hcd.c118
-rw-r--r--drivers/usb/host/r8a66597.h2
-rw-r--r--drivers/usb/host/sl811-hcd.c4
-rw-r--r--drivers/usb/host/uhci-debug.c4
-rw-r--r--drivers/usb/host/uhci-hcd.h10
-rw-r--r--drivers/usb/host/uhci-q.c21
24 files changed, 338 insertions, 128 deletions
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 2c63bfb1f8d..845479f7c70 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -24,10 +24,7 @@ config USB_EHCI_HCD
The Enhanced Host Controller Interface (EHCI) is standard for USB 2.0
"high speed" (480 Mbit/sec, 60 Mbyte/sec) host controller hardware.
If your USB host controller supports USB 2.0, you will likely want to
- configure this Host Controller Driver. At the time of this writing,
- the primary implementation of EHCI is a chip from NEC, widely available
- in add-on PCI cards, but implementations are in the works from other
- vendors including Intel and Philips. Motherboard support is appearing.
+ configure this Host Controller Driver.
EHCI controllers are packaged with "companion" host controllers (OHCI
or UHCI) to handle USB 1.1 devices connected to root hub ports. Ports
@@ -123,7 +120,7 @@ config USB_ISP116X_HCD
config USB_ISP1760_HCD
tristate "ISP 1760 HCD support"
- depends on USB && EXPERIMENTAL && (PCI || PPC_OF)
+ depends on USB && EXPERIMENTAL
---help---
The ISP1760 chip is a USB 2.0 host controller.
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index e551bb38852..f2618d17710 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -110,6 +110,42 @@ MODULE_PARM_DESC (ignore_oc, "ignore bogus hardware overcurrent indications");
/*-------------------------------------------------------------------------*/
+static void
+timer_action(struct ehci_hcd *ehci, enum ehci_timer_action action)
+{
+ /* Don't override timeouts which shrink or (later) disable
+ * the async ring; just the I/O watchdog. Note that if a
+ * SHRINK were pending, OFF would never be requested.
+ */
+ if (timer_pending(&ehci->watchdog)
+ && ((BIT(TIMER_ASYNC_SHRINK) | BIT(TIMER_ASYNC_OFF))
+ & ehci->actions))
+ return;
+
+ if (!test_and_set_bit(action, &ehci->actions)) {
+ unsigned long t;
+
+ switch (action) {
+ case TIMER_IO_WATCHDOG:
+ t = EHCI_IO_JIFFIES;
+ break;
+ case TIMER_ASYNC_OFF:
+ t = EHCI_ASYNC_JIFFIES;
+ break;
+ /* case TIMER_ASYNC_SHRINK: */
+ default:
+ /* add a jiffie since we synch against the
+ * 8 KHz uframe counter.
+ */
+ t = DIV_ROUND_UP(EHCI_SHRINK_FRAMES * HZ, 1000) + 1;
+ break;
+ }
+ mod_timer(&ehci->watchdog, t + jiffies);
+ }
+}
+
+/*-------------------------------------------------------------------------*/
+
/*
* handshake - spin reading hc until handshake completes or fails
* @ptr: address of hc register to be read
diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c
index ecc9b66c03c..1976b1b3778 100644
--- a/drivers/usb/host/ehci-q.c
+++ b/drivers/usb/host/ehci-q.c
@@ -333,12 +333,40 @@ qh_completions (struct ehci_hcd *ehci, struct ehci_qh *qh)
token = hc32_to_cpu(ehci, qtd->hw_token);
/* always clean up qtds the hc de-activated */
+ retry_xacterr:
if ((token & QTD_STS_ACTIVE) == 0) {
/* on STALL, error, and short reads this urb must
* complete and all its qtds must be recycled.
*/
if ((token & QTD_STS_HALT) != 0) {
+
+ /* retry transaction errors until we
+ * reach the software xacterr limit
+ */
+ if ((token & QTD_STS_XACT) &&
+ QTD_CERR(token) == 0 &&
+ --qh->xacterrs > 0 &&
+ !urb->unlinked) {
+ ehci_dbg(ehci,
+ "detected XactErr len %zu/%zu retry %d\n",
+ qtd->length - QTD_LENGTH(token), qtd->length,
+ QH_XACTERR_MAX - qh->xacterrs);
+
+ /* reset the token in the qtd and the
+ * qh overlay (which still contains
+ * the qtd) so that we pick up from
+ * where we left off
+ */
+ token &= ~QTD_STS_HALT;
+ token |= QTD_STS_ACTIVE |
+ (EHCI_TUNE_CERR << 10);
+ qtd->hw_token = cpu_to_hc32(ehci,
+ token);
+ wmb();
+ qh->hw_token = cpu_to_hc32(ehci, token);
+ goto retry_xacterr;
+ }
stopped = 1;
/* magic dummy for some short reads; qh won't advance.
@@ -421,6 +449,9 @@ halt:
/* remove qtd; it's recycled after possible urb completion */
list_del (&qtd->qtd_list);
last = qtd;
+
+ /* reinit the xacterr counter for the next qtd */
+ qh->xacterrs = QH_XACTERR_MAX;
}
/* last urb's completion might still need calling */
@@ -862,6 +893,7 @@ static void qh_link_async (struct ehci_hcd *ehci, struct ehci_qh *qh)
head->qh_next.qh = qh;
head->hw_next = dma;
+ qh->xacterrs = QH_XACTERR_MAX;
qh->qh_state = QH_STATE_LINKED;
/* qtd completions reported later by interrupt */
}
diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c
index 1d0b49e3f19..ada5d2ba297 100644
--- a/drivers/usb/host/ehci-sched.c
+++ b/drivers/usb/host/ehci-sched.c
@@ -563,7 +563,7 @@ static int qh_unlink_periodic(struct ehci_hcd *ehci, struct ehci_qh *qh)
// and this qh is active in the current uframe
// (and overlay token SplitXstate is false?)
// THEN
- // qh->hw_info1 |= __constant_cpu_to_hc32(1 << 7 /* "ignore" */);
+ // qh->hw_info1 |= cpu_to_hc32(1 << 7 /* "ignore" */);
/* high bandwidth, or otherwise part of every microframe */
if ((period = qh->period) == 0)
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index 262b00c9b33..6cff195e1a3 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -190,40 +190,6 @@ timer_action_done (struct ehci_hcd *ehci, enum ehci_timer_action action)
clear_bit (action, &ehci->actions);
}
-static inline void
-timer_action (struct ehci_hcd *ehci, enum ehci_timer_action action)
-{
- /* Don't override timeouts which shrink or (later) disable
- * the async ring; just the I/O watchdog. Note that if a
- * SHRINK were pending, OFF would never be requested.
- */
- if (timer_pending(&ehci->watchdog)
- && ((BIT(TIMER_ASYNC_SHRINK) | BIT(TIMER_ASYNC_OFF))
- & ehci->actions))
- return;
-
- if (!test_and_set_bit (action, &ehci->actions)) {
- unsigned long t;
-
- switch (action) {
- case TIMER_IO_WATCHDOG:
- t = EHCI_IO_JIFFIES;
- break;
- case TIMER_ASYNC_OFF:
- t = EHCI_ASYNC_JIFFIES;
- break;
- // case TIMER_ASYNC_SHRINK:
- default:
- /* add a jiffie since we synch against the
- * 8 KHz uframe counter.
- */
- t = DIV_ROUND_UP(EHCI_SHRINK_FRAMES * HZ, 1000) + 1;
- break;
- }
- mod_timer(&ehci->watchdog, t + jiffies);
- }
-}
-
static void free_cached_itd_list(struct ehci_hcd *ehci);
/*-------------------------------------------------------------------------*/
@@ -287,7 +253,7 @@ struct ehci_qtd {
/*
* Now the following defines are not converted using the
- * __constant_cpu_to_le32() macro anymore, since we have to support
+ * cpu_to_le32() macro anymore, since we have to support
* "dynamic" switching between be and le support, so that the driver
* can be used on one system with SoC EHCI controller using big-endian
* descriptors as well as a normal little-endian PCI EHCI controller.
@@ -376,6 +342,9 @@ struct ehci_qh {
#define QH_STATE_UNLINK_WAIT 4 /* LINKED and on reclaim q */
#define QH_STATE_COMPLETING 5 /* don't touch token.HALT */
+ u8 xacterrs; /* XactErr retry counter */
+#define QH_XACTERR_MAX 32 /* XactErr retry limit */
+
/* periodic schedule info */
u8 usecs; /* intr bandwidth */
u8 gap_uf; /* uframes split/csplit gap */
diff --git a/drivers/usb/host/fhci-dbg.c b/drivers/usb/host/fhci-dbg.c
index 34e14edf390..ea8a4255c5d 100644
--- a/drivers/usb/host/fhci-dbg.c
+++ b/drivers/usb/host/fhci-dbg.c
@@ -108,7 +108,7 @@ void fhci_dfs_create(struct fhci_hcd *fhci)
{
struct device *dev = fhci_to_hcd(fhci)->self.controller;
- fhci->dfs_root = debugfs_create_dir(dev->bus_id, NULL);
+ fhci->dfs_root = debugfs_create_dir(dev_name(dev), NULL);
if (!fhci->dfs_root) {
WARN_ON(1);
return;
diff --git a/drivers/usb/host/fhci-hcd.c b/drivers/usb/host/fhci-hcd.c
index ba622cc8a9b..0951818ef93 100644
--- a/drivers/usb/host/fhci-hcd.c
+++ b/drivers/usb/host/fhci-hcd.c
@@ -583,7 +583,7 @@ static int __devinit of_fhci_probe(struct of_device *ofdev,
if (sprop && strcmp(sprop, "host"))
return -ENODEV;
- hcd = usb_create_hcd(&fhci_driver, dev, dev->bus_id);
+ hcd = usb_create_hcd(&fhci_driver, dev, dev_name(dev));
if (!hcd) {
dev_err(dev, "could not create hcd\n");
return -ENOMEM;
@@ -650,7 +650,7 @@ static int __devinit of_fhci_probe(struct of_device *ofdev,
}
}
- ret = gpio_request(gpio, dev->bus_id);
+ ret = gpio_request(gpio, dev_name(dev));
if (ret) {
dev_err(dev, "failed to request gpio %d", i);
goto err_gpios;
diff --git a/drivers/usb/host/hwa-hc.c b/drivers/usb/host/hwa-hc.c
index 8582236e4ca..cbf30e515f2 100644
--- a/drivers/usb/host/hwa-hc.c
+++ b/drivers/usb/host/hwa-hc.c
@@ -464,8 +464,7 @@ static int __hwahc_dev_set_key(struct wusbhc *wusbhc, u8 port_idx, u32 tkid,
port_idx << 8 | iface_no,
keyd, keyd_len, 1000 /* FIXME: arbitrary */);
- memset(keyd, 0, sizeof(*keyd)); /* clear keys etc. */
- kfree(keyd);
+ kzfree(keyd); /* clear keys etc. */
return result;
}
diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c
index 4dda31b2689..a2b305477af 100644
--- a/drivers/usb/host/isp116x-hcd.c
+++ b/drivers/usb/host/isp116x-hcd.c
@@ -772,7 +772,7 @@ static int isp116x_urb_enqueue(struct usb_hcd *hcd,
break;
case PIPE_INTERRUPT:
urb->interval = ep->period;
- ep->length = min((int)ep->maxpacket,
+ ep->length = min_t(u32, ep->maxpacket,
urb->transfer_buffer_length);
/* urb submitted for already existing endpoint */
diff --git a/drivers/usb/host/isp116x.h b/drivers/usb/host/isp116x.h
index aa211bafcff..12db961acdf 100644
--- a/drivers/usb/host/isp116x.h
+++ b/drivers/usb/host/isp116x.h
@@ -563,7 +563,7 @@ static void urb_dbg(struct urb *urb, char *msg)
*/
static inline void dump_ptd(struct ptd *ptd)
{
- printk("td: %x %d%c%d %d,%d,%d %x %x%x%x\n",
+ printk(KERN_WARNING "td: %x %d%c%d %d,%d,%d %x %x%x%x\n",
PTD_GET_CC(ptd), PTD_GET_FA(ptd),
PTD_DIR_STR(ptd), PTD_GET_EP(ptd),
PTD_GET_COUNT(ptd), PTD_GET_LEN(ptd), PTD_GET_MPS(ptd),
@@ -576,7 +576,7 @@ static inline void dump_ptd_out_data(struct ptd *ptd, u8 * buf)
int k;
if (PTD_GET_DIR(ptd) != PTD_DIR_IN && PTD_GET_LEN(ptd)) {
- printk("-> ");
+ printk(KERN_WARNING "-> ");
for (k = 0; k < PTD_GET_LEN(ptd); ++k)
printk("%02x ", ((u8 *) buf)[k]);
printk("\n");
@@ -588,13 +588,13 @@ static inline void dump_ptd_in_data(struct ptd *ptd, u8 * buf)
int k;
if (PTD_GET_DIR(ptd) == PTD_DIR_IN && PTD_GET_COUNT(ptd)) {
- printk("<- ");
+ printk(KERN_WARNING "<- ");
for (k = 0; k < PTD_GET_COUNT(ptd); ++k)
printk("%02x ", ((u8 *) buf)[k]);
printk("\n");
}
if (PTD_GET_LAST(ptd))
- printk("-\n");
+ printk(KERN_WARNING "-\n");
}
#else
diff --git a/drivers/usb/host/isp1760-hcd.c b/drivers/usb/host/isp1760-hcd.c
index b899f1a59c2..cd07ea3f0c6 100644
--- a/drivers/usb/host/isp1760-hcd.c
+++ b/drivers/usb/host/isp1760-hcd.c
@@ -644,7 +644,7 @@ static void transform_add_int(struct isp1760_hcd *priv, struct isp1760_qh *qh,
if (urb->dev->speed != USB_SPEED_HIGH) {
/* split */
- ptd->dw5 = __constant_cpu_to_le32(0x1c);
+ ptd->dw5 = cpu_to_le32(0x1c);
if (qh->period >= 32)
period = qh->period / 2;
@@ -819,6 +819,13 @@ static void enqueue_an_ATL_packet(struct usb_hcd *hcd, struct isp1760_qh *qh,
u32 atl_regs, payload;
u32 buffstatus;
+ /*
+ * When this function is called from the interrupt handler to enqueue
+ * a follow-up packet, the SKIP register gets written and read back
+ * almost immediately. With ISP1761, this register requires a delay of
+ * 195ns between a write and subsequent read (see section 15.1.1.3).
+ */
+ ndelay(195);
skip_map = isp1760_readl(hcd->regs + HC_ATL_PTD_SKIPMAP_REG);
BUG_ON(!skip_map);
@@ -853,6 +860,13 @@ static void enqueue_an_INT_packet(struct usb_hcd *hcd, struct isp1760_qh *qh,
u32 int_regs, payload;
u32 buffstatus;
+ /*
+ * When this function is called from the interrupt handler to enqueue
+ * a follow-up packet, the SKIP register gets written and read back
+ * almost immediately. With ISP1761, this register requires a delay of
+ * 195ns between a write and subsequent read (see section 15.1.1.3).
+ */
+ ndelay(195);
skip_map = isp1760_readl(hcd->regs + HC_INT_PTD_SKIPMAP_REG);
BUG_ON(!skip_map);
@@ -1054,7 +1068,7 @@ static void do_atl_int(struct usb_hcd *usb_hcd)
priv_write_copy(priv, (u32 *)&ptd, usb_hcd->regs +
atl_regs, sizeof(ptd));
- ptd.dw0 |= __constant_cpu_to_le32(PTD_VALID);
+ ptd.dw0 |= cpu_to_le32(PTD_VALID);
priv_write_copy(priv, (u32 *)&ptd, usb_hcd->regs +
atl_regs, sizeof(ptd));
@@ -2235,9 +2249,10 @@ void deinit_kmem_cache(void)
kmem_cache_destroy(qh_cachep);
}
-struct usb_hcd *isp1760_register(u64 res_start, u64 res_len, int irq,
- u64 irqflags, struct device *dev, const char *busname,
- unsigned int devflags)
+struct usb_hcd *isp1760_register(phys_addr_t res_start, resource_size_t res_len,
+ int irq, unsigned long irqflags,
+ struct device *dev, const char *busname,
+ unsigned int devflags)
{
struct usb_hcd *hcd;
struct isp1760_hcd *priv;
diff --git a/drivers/usb/host/isp1760-hcd.h b/drivers/usb/host/isp1760-hcd.h
index a9daea58796..462f4943cb1 100644
--- a/drivers/usb/host/isp1760-hcd.h
+++ b/drivers/usb/host/isp1760-hcd.h
@@ -2,9 +2,10 @@
#define _ISP1760_HCD_H_
/* exports for if */
-struct usb_hcd *isp1760_register(u64 res_start, u64 res_len, int irq,
- u64 irqflags, struct device *dev, const char *busname,
- unsigned int devflags);
+struct usb_hcd *isp1760_register(phys_addr_t res_start, resource_size_t res_len,
+ int irq, unsigned long irqflags,
+ struct device *dev, const char *busname,
+ unsigned int devflags);
int init_kmem_once(void);
void deinit_kmem_cache(void);
diff --git a/drivers/usb/host/isp1760-if.c b/drivers/usb/host/isp1760-if.c
index 4cf7ca428b3..3fa3a170279 100644
--- a/drivers/usb/host/isp1760-if.c
+++ b/drivers/usb/host/isp1760-if.c
@@ -10,6 +10,7 @@
#include <linux/usb.h>
#include <linux/io.h>
+#include <linux/platform_device.h>
#include "../core/hcd.h"
#include "isp1760-hcd.h"
@@ -300,39 +301,101 @@ static struct pci_driver isp1761_pci_driver = {
};
#endif
+static int __devinit isp1760_plat_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+ struct usb_hcd *hcd;
+ struct resource *mem_res;
+ struct resource *irq_res;
+ resource_size_t mem_size;
+ unsigned long irqflags = IRQF_SHARED | IRQF_DISABLED;
+
+ mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!mem_res) {
+ pr_warning("isp1760: Memory resource not available\n");
+ ret = -ENODEV;
+ goto out;
+ }
+ mem_size = resource_size(mem_res);
+ if (!request_mem_region(mem_res->start, mem_size, "isp1760")) {
+ pr_warning("isp1760: Cannot reserve the memory resource\n");
+ ret = -EBUSY;
+ goto out;
+ }
+
+ irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (!irq_res) {
+ pr_warning("isp1760: IRQ resource not available\n");
+ return -ENODEV;
+ }
+ irqflags |= irq_res->flags & IRQF_TRIGGER_MASK;
+
+ hcd = isp1760_register(mem_res->start, mem_size, irq_res->start,
+ irqflags, &pdev->dev, dev_name(&pdev->dev), 0);
+ if (IS_ERR(hcd)) {
+ pr_warning("isp1760: Failed to register the HCD device\n");
+ ret = -ENODEV;
+ goto cleanup;
+ }
+
+ pr_info("ISP1760 USB device initialised\n");
+ return ret;
+
+cleanup:
+ release_mem_region(mem_res->start, mem_size);
+out:
+ return ret;
+}
+
+static int __devexit isp1760_plat_remove(struct platform_device *pdev)
+{
+ struct resource *mem_res;
+ resource_size_t mem_size;
+
+ mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ mem_size = resource_size(mem_res);
+ release_mem_region(mem_res->start, mem_size);
+
+ return 0;
+}
+
+static struct platform_driver isp1760_plat_driver = {
+ .probe = isp1760_plat_probe,
+ .remove = isp1760_plat_remove,
+ .driver = {
+ .name = "isp1760",
+ },
+};
+
static int __init isp1760_init(void)
{
- int ret;
+ int ret, any_ret = -ENODEV;
init_kmem_once();
+ ret = platform_driver_register(&isp1760_plat_driver);
+ if (!ret)
+ any_ret = 0;
#ifdef CONFIG_PPC_OF
ret = of_register_platform_driver(&isp1760_of_driver);
- if (ret) {
- deinit_kmem_cache();
- return ret;
- }
+ if (!ret)
+ any_ret = 0;
#endif
#ifdef CONFIG_PCI
ret = pci_register_driver(&isp1761_pci_driver);
- if (ret)
- goto unreg_of;
+ if (!ret)
+ any_ret = 0;
#endif
- return ret;
-#ifdef CONFIG_PCI
-unreg_of:
-#endif
-#ifdef CONFIG_PPC_OF
- of_unregister_platform_driver(&isp1760_of_driver);
-#endif
- deinit_kmem_cache();
- return ret;
+ if (any_ret)
+ deinit_kmem_cache();
+ return any_ret;
}
module_init(isp1760_init);
static void __exit isp1760_exit(void)
{
+ platform_driver_unregister(&isp1760_plat_driver);
#ifdef CONFIG_PPC_OF
of_unregister_platform_driver(&isp1760_of_driver);
#endif
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index 5cf5f1eca4f..25db704f3a2 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -997,7 +997,7 @@ MODULE_LICENSE ("GPL");
#define SA1111_DRIVER ohci_hcd_sa1111_driver
#endif
-#ifdef CONFIG_ARCH_S3C2410
+#if defined(CONFIG_ARCH_S3C2410) || defined(CONFIG_ARCH_S3C64XX)
#include "ohci-s3c2410.c"
#define PLATFORM_DRIVER ohci_hcd_s3c2410_driver
#endif
@@ -1049,7 +1049,8 @@ MODULE_LICENSE ("GPL");
#if defined(CONFIG_CPU_SUBTYPE_SH7720) || \
defined(CONFIG_CPU_SUBTYPE_SH7721) || \
- defined(CONFIG_CPU_SUBTYPE_SH7763)
+ defined(CONFIG_CPU_SUBTYPE_SH7763) || \
+ defined(CONFIG_CPU_SUBTYPE_SH7786)
#include "ohci-sh.c"
#define PLATFORM_DRIVER ohci_hcd_sh_driver
#endif
diff --git a/drivers/usb/host/ohci-s3c2410.c b/drivers/usb/host/ohci-s3c2410.c
index f46af7a718d..a68af2dd55c 100644
--- a/drivers/usb/host/ohci-s3c2410.c
+++ b/drivers/usb/host/ohci-s3c2410.c
@@ -21,9 +21,7 @@
#include <linux/platform_device.h>
#include <linux/clk.h>
-
-#include <mach/hardware.h>
-#include <mach/usb-control.h>
+#include <plat/usb-control.h>
#define valid_port(idx) ((idx) == 1 || (idx) == 2)
@@ -372,7 +370,7 @@ static int usb_hcd_s3c2410_probe (const struct hc_driver *driver,
usb_clk = clk_get(&dev->dev, "usb-bus-host");
if (IS_ERR(usb_clk)) {
- dev_err(&dev->dev, "cannot get usb-host clock\n");
+ dev_err(&dev->dev, "cannot get usb-bus-host clock\n");
retval = -ENOENT;
goto err_clk;
}
diff --git a/drivers/usb/host/oxu210hp-hcd.c b/drivers/usb/host/oxu210hp-hcd.c
index 75548f7c716..5ac489ee3da 100644
--- a/drivers/usb/host/oxu210hp-hcd.c
+++ b/drivers/usb/host/oxu210hp-hcd.c
@@ -845,14 +845,14 @@ static inline void qh_update(struct oxu_hcd *oxu,
is_out = !(qtd->hw_token & cpu_to_le32(1 << 8));
epnum = (le32_to_cpup(&qh->hw_info1) >> 8) & 0x0f;
if (unlikely(!usb_gettoggle(qh->dev, epnum, is_out))) {
- qh->hw_token &= ~__constant_cpu_to_le32(QTD_TOGGLE);
+ qh->hw_token &= ~cpu_to_le32(QTD_TOGGLE);
usb_settoggle(qh->dev, epnum, is_out, 1);
}
}
/* HC must see latest qtd and qh data before we clear ACTIVE+HALT */
wmb();
- qh->hw_token &= __constant_cpu_to_le32(QTD_TOGGLE | QTD_STS_PING);
+ qh->hw_token &= cpu_to_le32(QTD_TOGGLE | QTD_STS_PING);
}
/* If it weren't for a common silicon quirk (writing the dummy into the qh
@@ -937,7 +937,7 @@ __acquires(oxu->lock)
struct ehci_qh *qh = (struct ehci_qh *) urb->hcpriv;
/* S-mask in a QH means it's an interrupt urb */
- if ((qh->hw_info2 & __constant_cpu_to_le32(QH_SMASK)) != 0) {
+ if ((qh->hw_info2 & cpu_to_le32(QH_SMASK)) != 0) {
/* ... update hc-wide periodic stats (for usbfs) */
oxu_to_hcd(oxu)->self.bandwidth_int_reqs--;
@@ -981,7 +981,7 @@ static void unlink_async(struct oxu_hcd *oxu, struct ehci_qh *qh);
static void intr_deschedule(struct oxu_hcd *oxu, struct ehci_qh *qh);
static int qh_schedule(struct oxu_hcd *oxu, struct ehci_qh *qh);
-#define HALT_BIT __constant_cpu_to_le32(QTD_STS_HALT)
+#define HALT_BIT cpu_to_le32(QTD_STS_HALT)
/* Process and free completed qtds for a qh, returning URBs to drivers.
* Chases up to qh->hw_current. Returns number of completions called,
@@ -1160,7 +1160,7 @@ halt:
/* should be rare for periodic transfers,
* except maybe high bandwidth ...
*/
- if ((__constant_cpu_to_le32(QH_SMASK)
+ if ((cpu_to_le32(QH_SMASK)
& qh->hw_info2) != 0) {
intr_deschedule(oxu, qh);
(void) qh_schedule(oxu, qh);
@@ -1350,7 +1350,7 @@ static struct list_head *qh_urb_transaction(struct oxu_hcd *oxu,
}
/* by default, enable interrupt on urb completion */
- qtd->hw_token |= __constant_cpu_to_le32(QTD_IOC);
+ qtd->hw_token |= cpu_to_le32(QTD_IOC);
return head;
cleanup:
@@ -1539,7 +1539,7 @@ static void qh_link_async(struct oxu_hcd *oxu, struct ehci_qh *qh)
/* qtd completions reported later by interrupt */
}
-#define QH_ADDR_MASK __constant_cpu_to_le32(0x7f)
+#define QH_ADDR_MASK cpu_to_le32(0x7f)
/*
* For control/bulk/interrupt, return QH with these TDs appended.
@@ -2012,7 +2012,7 @@ static void qh_unlink_periodic(struct oxu_hcd *oxu, struct ehci_qh *qh)
* and this qh is active in the current uframe
* (and overlay token SplitXstate is false?)
* THEN
- * qh->hw_info1 |= __constant_cpu_to_le32(1 << 7 "ignore");
+ * qh->hw_info1 |= cpu_to_le32(1 << 7 "ignore");
*/
/* high bandwidth, or otherwise part of every microframe */
@@ -2057,7 +2057,7 @@ static void intr_deschedule(struct oxu_hcd *oxu, struct ehci_qh *qh)
* active high speed queues may need bigger delays...
*/
if (list_empty(&qh->qtd_list)
- || (__constant_cpu_to_le32(QH_CMASK) & qh->hw_info2) != 0)
+ || (cpu_to_le32(QH_CMASK) & qh->hw_info2) != 0)
wait = 2;
else
wait = 55; /* worst case: 3 * 1024 */
@@ -2183,10 +2183,10 @@ static int qh_schedule(struct oxu_hcd *oxu, struct ehci_qh *qh)
qh->start = frame;
/* reset S-frame and (maybe) C-frame masks */
- qh->hw_info2 &= __constant_cpu_to_le32(~(QH_CMASK | QH_SMASK));
+ qh->hw_info2 &= cpu_to_le32(~(QH_CMASK | QH_SMASK));
qh->hw_info2 |= qh->period
? cpu_to_le32(1 << uframe)
- : __constant_cpu_to_le32(QH_SMASK);
+ : cpu_to_le32(QH_SMASK);
qh->hw_info2 |= c_mask;
} else
oxu_dbg(oxu, "reused qh %p schedule\n", qh);
@@ -2684,7 +2684,7 @@ static int oxu_reset(struct usb_hcd *hcd)
oxu->urb_len = 0;
/* FIMXE */
- hcd->self.controller->dma_mask = 0UL;
+ hcd->self.controller->dma_mask = NULL;
if (oxu->is_otg) {
oxu->caps = hcd->regs + OXU_OTG_CAP_OFFSET;
diff --git a/drivers/usb/host/oxu210hp.h b/drivers/usb/host/oxu210hp.h
index 8910e271cc7..1c216ad9aad 100644
--- a/drivers/usb/host/oxu210hp.h
+++ b/drivers/usb/host/oxu210hp.h
@@ -235,21 +235,21 @@ struct ehci_qtd {
} __attribute__ ((aligned(32)));
/* mask NakCnt+T in qh->hw_alt_next */
-#define QTD_MASK __constant_cpu_to_le32 (~0x1f)
+#define QTD_MASK cpu_to_le32 (~0x1f)
#define IS_SHORT_READ(token) (QTD_LENGTH(token) != 0 && QTD_PID(token) == 1)
/* Type tag from {qh, itd, sitd, fstn}->hw_next */
-#define Q_NEXT_TYPE(dma) ((dma) & __constant_cpu_to_le32 (3 << 1))
+#define Q_NEXT_TYPE(dma) ((dma) & cpu_to_le32 (3 << 1))
/* values for that type tag */
-#define Q_TYPE_QH __constant_cpu_to_le32 (1 << 1)
+#define Q_TYPE_QH cpu_to_le32 (1 << 1)
/* next async queue entry, or pointer to interrupt/periodic QH */
#define QH_NEXT(dma) (cpu_to_le32(((u32)dma)&~0x01f)|Q_TYPE_QH)
/* for periodic/async schedules and qtd lists, mark end of list */
-#define EHCI_LIST_END __constant_cpu_to_le32(1) /* "null pointer" to hw */
+#define EHCI_LIST_END cpu_to_le32(1) /* "null pointer" to hw */
/*
* Entries in periodic shadow table are pointers to one of four kinds
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
index 75b69847918..033c2846ce5 100644
--- a/drivers/usb/host/pci-quirks.c
+++ b/drivers/usb/host/pci-quirks.c
@@ -234,7 +234,7 @@ static void __devinit quirk_usb_disable_ehci(struct pci_dev *pdev)
*/
hcc_params = readl(base + EHCI_HCC_PARAMS);
offset = (hcc_params >> 8) & 0xff;
- while (offset && count--) {
+ while (offset && --count) {
u32 cap;
int msec;
diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c
index 319041205b5..f1626e58c14 100644
--- a/drivers/usb/host/r8a66597-hcd.c
+++ b/drivers/usb/host/r8a66597-hcd.c
@@ -660,9 +660,9 @@ static u16 get_empty_pipenum(struct r8a66597 *r8a66597,
u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min;
memset(array, 0, sizeof(array));
- switch (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
+ switch (usb_endpoint_type(ep)) {
case USB_ENDPOINT_XFER_BULK:
- if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
+ if (usb_endpoint_dir_in(ep))
array[i++] = 4;
else {
array[i++] = 3;
@@ -670,7 +670,7 @@ static u16 get_empty_pipenum(struct r8a66597 *r8a66597,
}
break;
case USB_ENDPOINT_XFER_INT:
- if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) {
+ if (usb_endpoint_dir_in(ep)) {
array[i++] = 6;
array[i++] = 7;
array[i++] = 8;
@@ -678,7 +678,7 @@ static u16 get_empty_pipenum(struct r8a66597 *r8a66597,
array[i++] = 9;
break;
case USB_ENDPOINT_XFER_ISOC:
- if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
+ if (usb_endpoint_dir_in(ep))
array[i++] = 2;
else
array[i++] = 1;
@@ -928,10 +928,9 @@ static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb,
info.pipenum = get_empty_pipenum(r8a66597, ep);
info.address = get_urb_to_r8a66597_addr(r8a66597, urb);
- info.epnum = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
+ info.epnum = usb_endpoint_num(ep);
info.maxpacket = le16_to_cpu(ep->wMaxPacketSize);
- info.type = get_r8a66597_type(ep->bmAttributes
- & USB_ENDPOINT_XFERTYPE_MASK);
+ info.type = get_r8a66597_type(usb_endpoint_type(ep));
info.bufnum = get_bufnum(info.pipenum);
info.buf_bsize = get_buf_bsize(info.pipenum);
if (info.type == R8A66597_BULK) {
@@ -941,7 +940,7 @@ static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb,
info.interval = get_interval(urb, ep->bInterval);
info.timer_interval = get_timer_interval(urb, ep->bInterval);
}
- if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
+ if (usb_endpoint_dir_in(ep))
info.dir_in = 1;
else
info.dir_in = 0;
@@ -1014,6 +1013,9 @@ static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port,
r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port));
r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port));
+
+ if (r8a66597->bus_suspended)
+ usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
}
/* this function must be called with interrupt disabled */
@@ -1395,7 +1397,7 @@ static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
(int)urb->iso_frame_desc[td->iso_cnt].length);
} else {
buf = (u16 *)(urb->transfer_buffer + urb->actual_length);
- size = min((int)bufsize,
+ size = min_t(u32, bufsize,
urb->transfer_buffer_length - urb->actual_length);
}
@@ -1615,6 +1617,11 @@ static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
r8a66597_bclr(r8a66597, DTCHE, INTENB2);
r8a66597_usb_disconnect(r8a66597, 1);
}
+ if (mask2 & BCHG) {
+ r8a66597_write(r8a66597, ~BCHG, INTSTS2);
+ r8a66597_bclr(r8a66597, BCHGE, INTENB2);
+ usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
+ }
}
if (mask1) {
@@ -1630,6 +1637,12 @@ static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
r8a66597_bclr(r8a66597, DTCHE, INTENB1);
r8a66597_usb_disconnect(r8a66597, 0);
}
+ if (mask1 & BCHG) {
+ r8a66597_write(r8a66597, ~BCHG, INTSTS1);
+ r8a66597_bclr(r8a66597, BCHGE, INTENB1);
+ usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
+ }
+
if (mask1 & SIGN) {
r8a66597_write(r8a66597, ~SIGN, INTSTS1);
status = get_urb_error(r8a66597, 0);
@@ -2141,7 +2154,7 @@ static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
switch (wValue) {
case USB_PORT_FEAT_ENABLE:
- rh->port &= (1 << USB_PORT_FEAT_POWER);
+ rh->port &= ~(1 << USB_PORT_FEAT_POWER);
break;
case USB_PORT_FEAT_SUSPEND:
break;
@@ -2213,6 +2226,68 @@ error:
return ret;
}
+#if defined(CONFIG_PM)
+static int r8a66597_bus_suspend(struct usb_hcd *hcd)
+{
+ struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
+ int port;
+
+ dbg("%s", __func__);
+
+ for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
+ struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
+ unsigned long dvstctr_reg = get_dvstctr_reg(port);
+
+ if (!(rh->port & (1 << USB_PORT_FEAT_ENABLE)))
+ continue;
+
+ dbg("suspend port = %d", port);
+ r8a66597_bclr(r8a66597, UACT, dvstctr_reg); /* suspend */
+ rh->port |= 1 << USB_PORT_FEAT_SUSPEND;
+
+ if (rh->dev->udev->do_remote_wakeup) {
+ msleep(3); /* waiting last SOF */
+ r8a66597_bset(r8a66597, RWUPE, dvstctr_reg);
+ r8a66597_write(r8a66597, ~BCHG, get_intsts_reg(port));
+ r8a66597_bset(r8a66597, BCHGE, get_intenb_reg(port));
+ }
+ }
+
+ r8a66597->bus_suspended = 1;
+
+ return 0;
+}
+
+static int r8a66597_bus_resume(struct usb_hcd *hcd)
+{
+ struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
+ int port;
+
+ dbg("%s", __func__);
+
+ for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
+ struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
+ unsigned long dvstctr_reg = get_dvstctr_reg(port);
+
+ if (!(rh->port & (1 << USB_PORT_FEAT_SUSPEND)))
+ continue;
+
+ dbg("resume port = %d", port);
+ rh->port &= ~(1 << USB_PORT_FEAT_SUSPEND);
+ rh->port |= 1 << USB_PORT_FEAT_C_SUSPEND;
+ r8a66597_mdfy(r8a66597, RESUME, RESUME | UACT, dvstctr_reg);
+ msleep(50);
+ r8a66597_mdfy(r8a66597, UACT, RESUME | UACT, dvstctr_reg);
+ }
+
+ return 0;
+
+}
+#else
+#define r8a66597_bus_suspend NULL
+#define r8a66597_bus_resume NULL
+#endif
+
static struct hc_driver r8a66597_hc_driver = {
.description = hcd_name,
.hcd_priv_size = sizeof(struct r8a66597),
@@ -2243,16 +2318,39 @@ static struct hc_driver r8a66597_hc_driver = {
*/
.hub_status_data = r8a66597_hub_status_data,
.hub_control = r8a66597_hub_control,
+ .bus_suspend = r8a66597_bus_suspend,
+ .bus_resume = r8a66597_bus_resume,
};
#if defined(CONFIG_PM)
static int r8a66597_suspend(struct platform_device *pdev, pm_message_t state)
{
+ struct r8a66597 *r8a66597 = dev_get_drvdata(&pdev->dev);
+ int port;
+
+ dbg("%s", __func__);
+
+ disable_controller(r8a66597);
+
+ for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
+ struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
+
+ rh->port = 0x00000000;
+ }
+
return 0;
}
static int r8a66597_resume(struct platform_device *pdev)
{
+ struct r8a66597 *r8a66597 = dev_get_drvdata(&pdev->dev);
+ struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
+
+ dbg("%s", __func__);
+
+ enable_controller(r8a66597);
+ usb_root_hub_lost_power(hcd->self.root_hub);
+
return 0;
}
#else /* if defined(CONFIG_PM) */
diff --git a/drivers/usb/host/r8a66597.h b/drivers/usb/host/r8a66597.h
index ecacde4d69b..f49208f1bb7 100644
--- a/drivers/usb/host/r8a66597.h
+++ b/drivers/usb/host/r8a66597.h
@@ -504,6 +504,8 @@ struct r8a66597 {
struct list_head child_device;
unsigned long child_connect_map[4];
+
+ unsigned bus_suspended:1;
};
static inline struct r8a66597 *hcd_to_r8a66597(struct usb_hcd *hcd)
diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c
index e106e9d48d4..a949259f18b 100644
--- a/drivers/usb/host/sl811-hcd.c
+++ b/drivers/usb/host/sl811-hcd.c
@@ -230,7 +230,7 @@ static void in_packet(
writeb(usb_pipedevice(urb->pipe), data_reg);
sl811_write(sl811, bank + SL11H_HOSTCTLREG, control);
- ep->length = min((int)len,
+ ep->length = min_t(u32, len,
urb->transfer_buffer_length - urb->actual_length);
PACKET("IN%s/%d qh%p len%d\n", ep->nak_count ? "/retry" : "",
!!usb_gettoggle(urb->dev, ep->epnum, 0), ep, len);
@@ -255,7 +255,7 @@ static void out_packet(
buf = urb->transfer_buffer + urb->actual_length;
prefetch(buf);
- len = min((int)ep->maxpacket,
+ len = min_t(u32, ep->maxpacket,
urb->transfer_buffer_length - urb->actual_length);
if (!(control & SL11H_HCTLMASK_ISOCH)
diff --git a/drivers/usb/host/uhci-debug.c b/drivers/usb/host/uhci-debug.c
index 20cc58b9780..e52b954dda4 100644
--- a/drivers/usb/host/uhci-debug.c
+++ b/drivers/usb/host/uhci-debug.c
@@ -118,7 +118,9 @@ static int uhci_show_urbp(struct urb_priv *urbp, char *buf, int len, int space)
}
out += sprintf(out, "%s%s", ptype, (urbp->fsbr ? " FSBR" : ""));
- out += sprintf(out, " Actlen=%d", urbp->urb->actual_length);
+ out += sprintf(out, " Actlen=%d%s", urbp->urb->actual_length,
+ (urbp->qh->type == USB_ENDPOINT_XFER_CONTROL ?
+ "-8" : ""));
if (urbp->urb->unlinked)
out += sprintf(out, " Unlinked=%d", urbp->urb->unlinked);
diff --git a/drivers/usb/host/uhci-hcd.h b/drivers/usb/host/uhci-hcd.h
index 7d01c5677f9..26bd1b2bcbf 100644
--- a/drivers/usb/host/uhci-hcd.h
+++ b/drivers/usb/host/uhci-hcd.h
@@ -73,11 +73,11 @@
#define USBLEGSUP_RWC 0x8f00 /* the R/WC bits */
#define USBLEGSUP_RO 0x5040 /* R/O and reserved bits */
-#define UHCI_PTR_BITS __constant_cpu_to_le32(0x000F)
-#define UHCI_PTR_TERM __constant_cpu_to_le32(0x0001)
-#define UHCI_PTR_QH __constant_cpu_to_le32(0x0002)
-#define UHCI_PTR_DEPTH __constant_cpu_to_le32(0x0004)
-#define UHCI_PTR_BREADTH __constant_cpu_to_le32(0x0000)
+#define UHCI_PTR_BITS cpu_to_le32(0x000F)
+#define UHCI_PTR_TERM cpu_to_le32(0x0001)
+#define UHCI_PTR_QH cpu_to_le32(0x0002)
+#define UHCI_PTR_DEPTH cpu_to_le32(0x0004)
+#define UHCI_PTR_BREADTH cpu_to_le32(0x0000)
#define UHCI_NUMFRAMES 1024 /* in the frame list [array] */
#define UHCI_MAX_SOF_NUMBER 2047 /* in an SOF packet */
diff --git a/drivers/usb/host/uhci-q.c b/drivers/usb/host/uhci-q.c
index 5631d89c873..3e5807d14ff 100644
--- a/drivers/usb/host/uhci-q.c
+++ b/drivers/usb/host/uhci-q.c
@@ -402,7 +402,7 @@ static void uhci_fixup_toggles(struct uhci_qh *qh, int skip_first)
/* Otherwise all the toggles in the URB have to be switched */
} else {
list_for_each_entry(td, &urbp->td_list, list) {
- td->token ^= __constant_cpu_to_le32(
+ td->token ^= cpu_to_le32(
TD_TOKEN_TOGGLE);
toggle ^= 1;
}
@@ -883,7 +883,7 @@ static int uhci_submit_control(struct uhci_hcd *uhci, struct urb *urb,
uhci_fill_td(td, 0, USB_PID_OUT | uhci_explen(0), 0);
wmb();
- qh->dummy_td->status |= __constant_cpu_to_le32(TD_CTRL_ACTIVE);
+ qh->dummy_td->status |= cpu_to_le32(TD_CTRL_ACTIVE);
qh->dummy_td = td;
/* Low-speed transfers get a different queue, and won't hog the bus.
@@ -899,8 +899,6 @@ static int uhci_submit_control(struct uhci_hcd *uhci, struct urb *urb,
}
if (qh->state != QH_STATE_ACTIVE)
qh->skel = skel;
-
- urb->actual_length = -8; /* Account for the SETUP packet */
return 0;
nomem:
@@ -1003,7 +1001,7 @@ static int uhci_submit_common(struct uhci_hcd *uhci, struct urb *urb,
* fast side but not enough to justify delaying an interrupt
* more than 2 or 3 URBs, so we will ignore the URB_NO_INTERRUPT
* flag setting. */
- td->status |= __constant_cpu_to_le32(TD_CTRL_IOC);
+ td->status |= cpu_to_le32(TD_CTRL_IOC);
/*
* Build the new dummy TD and activate the old one
@@ -1015,7 +1013,7 @@ static int uhci_submit_common(struct uhci_hcd *uhci, struct urb *urb,
uhci_fill_td(td, 0, USB_PID_OUT | uhci_explen(0), 0);
wmb();
- qh->dummy_td->status |= __constant_cpu_to_le32(TD_CTRL_ACTIVE);
+ qh->dummy_td->status |= cpu_to_le32(TD_CTRL_ACTIVE);
qh->dummy_td = td;
usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
@@ -1317,7 +1315,7 @@ static int uhci_submit_isochronous(struct uhci_hcd *uhci, struct urb *urb,
}
/* Set the interrupt-on-completion flag on the last packet. */
- td->status |= __constant_cpu_to_le32(TD_CTRL_IOC);
+ td->status |= cpu_to_le32(TD_CTRL_IOC);
/* Add the TDs to the frame list */
frame = urb->start_frame;
@@ -1494,11 +1492,10 @@ __acquires(uhci->lock)
if (qh->type == USB_ENDPOINT_XFER_CONTROL) {
- /* urb->actual_length < 0 means the setup transaction didn't
- * complete successfully. Either it failed or the URB was
- * unlinked first. Regardless, don't confuse people with a
- * negative length. */
- urb->actual_length = max(urb->actual_length, 0);
+ /* Subtract off the length of the SETUP packet from
+ * urb->actual_length.
+ */
+ urb->actual_length -= min_t(u32, 8, urb->actual_length);
}
/* When giving back the first URB in an Isochronous queue,
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-23 13:46:42 +0000