Revert to Fedora kernel-2.6.17-1.2187_FC5 patched with vs2.0.2.1; there are too many...

[linux-2.6.git] / drivers / usb / storage / scsiglue.c

diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c
index a4b7df9..5f11e19 100644 (file)
--- a/drivers/usb/storage/scsiglue.c
+++ b/drivers/usb/storage/scsiglue.c
@@ -112,11 +112,13 @@ static int slave_configure(struct scsi_device *sdev)
        if (sdev->scsi_level < SCSI_2)
                sdev->scsi_level = sdev->sdev_target->scsi_level = SCSI_2;
 
-       /* 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) &&
+       /* 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 &&
                        sdev->request_queue->max_sectors > 64)
                blk_queue_max_sectors(sdev->request_queue, 64);
 
@@ -284,7 +286,11 @@ static int bus_reset(struct scsi_cmnd *srb)
        int result;
 
        US_DEBUGP("%s called\n", __FUNCTION__);
+
+       mutex_lock(&(us->dev_mutex));
        result = usb_stor_port_reset(us);
+       mutex_unlock(&us->dev_mutex);
+
        return result < 0 ? FAILED : SUCCESS;
 }