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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>
This commit is contained in:
Alan Stern 2009-02-02 09:51:01 -05:00 committed by Greg Kroah-Hartman
parent 6b40c0057a
commit 0d020aae0a
1 changed files with 3 additions and 33 deletions
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36
drivers/usb/storage/transport.c
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@ -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: