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authorAlan Stern <stern@rowland.harvard.edu>2009-02-02 09:51:01 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2009-02-09 11:19:47 -0800
commit0d020aae0a154cffce680a7775c74788fa0bea92 (patch)
treefe1a3e329558327a95803936c00925e672c31241 /drivers/usb/storage/transport.c
parent6b40c0057a7935bcf63a38a924094c7e61d4731f (diff)
USB: usb-storage: remove WARN from last-sector hacks
This patch (as1201) removes the WARN() from the last-sector hacks in usb-storage, thereby making the code match the version now in .27-stable and .28-stable. The WARN() isn't needed, since there is no longer any intention of assuming that all storage devices have an even number of sectors, and it annoys users for no good reason. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/storage/transport.c')
-rw-r--r--drivers/usb/storage/transport.c36
1 files changed, 3 insertions, 33 deletions
diff --git a/drivers/usb/storage/transport.c b/drivers/usb/storage/transport.c
index 1d5438e6363..fb65d221ced 100644
--- a/drivers/usb/storage/transport.c
+++ b/drivers/usb/storage/transport.c
@@ -558,32 +558,10 @@ static void last_sector_hacks(struct us_data *us, struct scsi_cmnd *srb)
if (srb->result == SAM_STAT_GOOD && scsi_get_resid(srb) == 0) {
- /* The command succeeded. If the capacity is odd
- * (i.e., if the sector number is even) then the
- * "always-even" heuristic would be wrong for this
- * device. Issue a WARN() so that the kerneloops.org
- * project will be notified and we will then know to
- * mark the device with a CAPACITY_OK flag. Hopefully
- * this will occur for only a few devices.
- *
- * Use the sign of us->last_sector_hacks to tell whether
- * the warning has already been issued; we don't need
- * more than one warning per device.
+ /* The command succeeded. We know this device doesn't
+ * have the last-sector bug, so stop checking it.
*/
- if (!(sector & 1) && us->use_last_sector_hacks > 0) {
- unsigned vid = le16_to_cpu(
- us->pusb_dev->descriptor.idVendor);
- unsigned pid = le16_to_cpu(
- us->pusb_dev->descriptor.idProduct);
- unsigned rev = le16_to_cpu(
- us->pusb_dev->descriptor.bcdDevice);
-
- WARN(1, "%s: Successful last sector success at %u, "
- "device %04x:%04x:%04x\n",
- sdkp->disk->disk_name, sector,
- vid, pid, rev);
- us->use_last_sector_hacks = -1;
- }
+ us->use_last_sector_hacks = 0;
} else {
/* The command failed. Allow up to 3 retries in case this
@@ -599,14 +577,6 @@ static void last_sector_hacks(struct us_data *us, struct scsi_cmnd *srb)
srb->result = SAM_STAT_CHECK_CONDITION;
memcpy(srb->sense_buffer, record_not_found,
sizeof(record_not_found));
-
- /* In theory we might want to issue a WARN() here if the
- * capacity is even, since it could indicate the device
- * has the READ CAPACITY bug _and_ the real capacity is
- * odd. But it could also indicate that the device
- * simply can't access its last sector, a failure mode
- * which is surprisingly common. So no warning.
- */
}
done: