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| author | Phil Dibowitz <phil@ipom.com> | 2006-06-24 17:27:10 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-07-12 16:03:22 -0700 |
| commit | 883d989a7edf7a62e38e9150990b56209420e9e5 (patch) | |
| tree | 11b0476d04a21a3fa5a3ab07c6a687ac958a18d3 /drivers/usb/storage/scsiglue.c | |
| parent | 20307949469269ceea6262aaa306dcb55cf43b25 (diff) | |
| download | kernel-common-883d989a7edf7a62e38e9150990b56209420e9e5.tar.gz kernel-common-883d989a7edf7a62e38e9150990b56209420e9e5.tar.bz2 kernel-common-883d989a7edf7a62e38e9150990b56209420e9e5.zip | |
[PATCH] USB Storage: US_FL_MAX_SECTORS_64 flag
This patch adds a US_FL_MAX_SECTORS_64 and removes the Genesys special-cases
for this that were in scsiglue.c. It also adds the flag to other devices
reported to need it.
Signed-off-by: Phil Dibowitz <phil@ipom.com>
Signed-off-by: Matthew Dharm <mdharm-usb@one-eyed-alien.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/storage/scsiglue.c')
| -rw-r--r-- | drivers/usb/storage/scsiglue.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c index 5715291ba540..a4b7df9ff8c1 100644 --- a/drivers/usb/storage/scsiglue.c +++ b/drivers/usb/storage/scsiglue.c @@ -112,13 +112,11 @@ static int slave_configure(struct scsi_device *sdev) if (sdev->scsi_level < SCSI_2) sdev->scsi_level = sdev->sdev_target->scsi_level = SCSI_2; - /* According to the technical support people at Genesys Logic, - * devices using their chips have problems transferring more than - * 32 KB at a time. In practice people have found that 64 KB - * works okay and that's what Windows does. But we'll be - * conservative; people can always use the sysfs interface to - * increase max_sectors. */ - if (le16_to_cpu(us->pusb_dev->descriptor.idVendor) == USB_VENDOR_ID_GENESYS && + /* Many devices have trouble transfering more than 32KB at a time, + * while others have trouble with more than 64K. At this time we + * are limiting both to 32K (64 sectores). + */ + if ((us->flags & US_FL_MAX_SECTORS_64) && sdev->request_queue->max_sectors > 64) blk_queue_max_sectors(sdev->request_queue, 64); |