Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (32 commits)
  USB GADGET/PERIPHERAL: g_file_storage Bulk-Only Transport compliance, clear-feature ignore
  USB GADGET/PERIPHERAL: g_file_storage Bulk-Only Transport compliance
  usb_serial: some coding style fixes
  USB: Remove redundant dependencies on USB_ATM.
  USB: UHCI: disable remote wakeup when it's not needed
  USB: OHCI: work around bogus compiler warning
  USB: add Cypress c67x00 OTG controller HCD driver
  USB: add Cypress c67x00 OTG controller core driver
  USB: add Cypress c67x00 low level interface code
  USB: airprime: unlock mutex instead of trying to lock it again
  USB: storage: Update mailling list address
  USB: storage: UNUSUAL_DEVS() for PanDigital Picture frame.
  USB: Add the USB 2.0 extension descriptor.
  USB: add more FTDI device ids
  USB: fix cannot work usb storage when using ohci-sm501
  usb: gadget zero timer init fix
  usb: gadget zero style fixups (mostly whitespace)
  usb serial gadget: CDC ACM fixes
  usb: pxa27x_udc driver
  USB: INTOVA Pixtreme camera mass storage device
  ...

1 files changed, 39 insertions, 24 deletions

diff --git a/drivers/block/ub.c b/drivers/block/ub.c
index e322cce8c12d..3a281ef11ffa 100644
--- a/drivers/block/ub.c
+++ b/drivers/block/ub.c
@@ -205,6 +205,7 @@ struct ub_scsi_cmd {
         unsigned char key, asc, ascq;   /* May be valid if error==-EIO */
 
         int stat_count;                 /* Retries getting status. */
+        unsigned int timeo;             /* jiffies until rq->timeout changes */
 
         unsigned int len;               /* Requested length */
         unsigned int current_sg;
@@ -318,6 +319,7 @@ struct ub_dev {
         int openc;                      /* protected by ub_lock! */
                                         /* kref is too implicit for our taste */
         int reset;                      /* Reset is running */
+        int bad_resid;
         unsigned int tagcnt;
         char name[12];
         struct usb_device *dev;
@@ -764,6 +766,12 @@ static void ub_cmd_build_packet(struct ub_dev *sc, struct ub_lun *lun,
         cmd->cdb_len = rq->cmd_len;
 
         cmd->len = rq->data_len;
+
+        /*
+         * To reapply this to every URB is not as incorrect as it looks.
+         * In return, we avoid any complicated tracking calculations.
+         */
+        cmd->timeo = rq->timeout;
 }
 
 static void ub_rw_cmd_done(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
@@ -785,10 +793,6 @@ static void ub_rw_cmd_done(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
                         scsi_status = 0;
                 } else {
                         if (cmd->act_len != cmd->len) {
-                                if ((cmd->key == MEDIUM_ERROR ||
-                                     cmd->key == UNIT_ATTENTION) &&
-                                    ub_rw_cmd_retry(sc, lun, urq, cmd) == 0)
-                                        return;
                                 scsi_status = SAM_STAT_CHECK_CONDITION;
                         } else {
                                 scsi_status = 0;
@@ -804,7 +808,10 @@ static void ub_rw_cmd_done(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
                         else
                                 scsi_status = DID_ERROR << 16;
                 } else {
-                        if (cmd->error == -EIO) {
+                        if (cmd->error == -EIO &&
+                            (cmd->key == 0 ||
+                             cmd->key == MEDIUM_ERROR ||
+                             cmd->key == UNIT_ATTENTION)) {
                                 if (ub_rw_cmd_retry(sc, lun, urq, cmd) == 0)
                                         return;
                         }
@@ -1259,14 +1266,19 @@ static void ub_scsi_urb_compl(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
                         return;
                 }
 
-                len = le32_to_cpu(bcs->Residue);
-                if (len != cmd->len - cmd->act_len) {
-                        /*
-                         * It is all right to transfer less, the caller has
-                         * to check. But it's not all right if the device
-                         * counts disagree with our counts.
-                         */
-                        goto Bad_End;
+                if (!sc->bad_resid) {
+                        len = le32_to_cpu(bcs->Residue);
+                        if (len != cmd->len - cmd->act_len) {
+                                /*
+                                 * Only start ignoring if this cmd ended well.
+                                 */
+                                if (cmd->len == cmd->act_len) {
+                                        printk(KERN_NOTICE "%s: "
+                                            "bad residual %d of %d, ignoring\n",
+                                            sc->name, len, cmd->len);
+                                        sc->bad_resid = 1;
+                                }
+                        }
                 }
 
                 switch (bcs->Status) {
@@ -1297,8 +1309,7 @@ static void ub_scsi_urb_compl(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
                 ub_state_done(sc, cmd, -EIO);
 
         } else {
-                printk(KERN_WARNING "%s: "
-                    "wrong command state %d\n",
+                printk(KERN_WARNING "%s: wrong command state %d\n",
                     sc->name, cmd->state);
                 ub_state_done(sc, cmd, -EINVAL);
                 return;
@@ -1336,7 +1347,10 @@ static void ub_data_start(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
                 return;
         }
 
-        sc->work_timer.expires = jiffies + UB_DATA_TIMEOUT;
+        if (cmd->timeo)
+                sc->work_timer.expires = jiffies + cmd->timeo;
+        else
+                sc->work_timer.expires = jiffies + UB_DATA_TIMEOUT;
         add_timer(&sc->work_timer);
 
         cmd->state = UB_CMDST_DATA;
@@ -1376,7 +1390,10 @@ static int __ub_state_stat(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
                 return -1;
         }
 
-        sc->work_timer.expires = jiffies + UB_STAT_TIMEOUT;
+        if (cmd->timeo)
+                sc->work_timer.expires = jiffies + cmd->timeo;
+        else
+                sc->work_timer.expires = jiffies + UB_STAT_TIMEOUT;
         add_timer(&sc->work_timer);
         return 0;
 }
@@ -1515,8 +1532,7 @@ static void ub_top_sense_done(struct ub_dev *sc, struct ub_scsi_cmd *scmd)
                 return;
         }
         if (cmd->state != UB_CMDST_SENSE) {
-                printk(KERN_WARNING "%s: "
-                    "sense done with bad cmd state %d\n",
+                printk(KERN_WARNING "%s: sense done with bad cmd state %d\n",
                     sc->name, cmd->state);
                 return;
         }
@@ -1720,7 +1736,7 @@ static int ub_bd_ioctl(struct inode *inode, struct file *filp,
 }
 
 /*
- * This is called once a new disk was seen by the block layer or by ub_probe().
+ * This is called by check_disk_change if we reported a media change.
  * The main onjective here is to discover the features of the media such as
  * the capacity, read-only status, etc. USB storage generally does not
  * need to be spun up, but if we needed it, this would be the place.
@@ -2136,8 +2152,7 @@ static int ub_get_pipes(struct ub_dev *sc, struct usb_device *dev,
         }
 
         if (ep_in == NULL || ep_out == NULL) {
-                printk(KERN_NOTICE "%s: failed endpoint check\n",
-                    sc->name);
+                printk(KERN_NOTICE "%s: failed endpoint check\n", sc->name);
                 return -ENODEV;
         }
 
@@ -2354,7 +2369,7 @@ static void ub_disconnect(struct usb_interface *intf)
         spin_unlock_irqrestore(&ub_lock, flags);
 
         /*
-         * Fence stall clearnings, operations triggered by unlinkings and so on.
+         * Fence stall clearings, operations triggered by unlinkings and so on.
          * We do not attempt to unlink any URBs, because we do not trust the
          * unlink paths in HC drivers. Also, we get -84 upon disconnect anyway.
          */
@@ -2417,7 +2432,7 @@ static void ub_disconnect(struct usb_interface *intf)
         spin_unlock_irqrestore(sc->lock, flags);
 
         /*
-         * There is virtually no chance that other CPU runs times so long
+         * There is virtually no chance that other CPU runs a timeout so long
          * after ub_urb_complete should have called del_timer, but only if HCD
          * didn't forget to deliver a callback on unlink.
          */