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

[safe/jmp/linux-2.6] / drivers / scsi / sd.c

diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 611ccde..9a1dc0c 100644 (file)
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -235,6 +235,7 @@ static int sd_init_command(struct scsi_cmnd * SCpnt)
                        return 0;
 
                memcpy(SCpnt->cmnd, rq->cmd, sizeof(SCpnt->cmnd));
+               SCpnt->cmd_len = rq->cmd_len;
                if (rq_data_dir(rq) == WRITE)
                        SCpnt->sc_data_direction = DMA_TO_DEVICE;
                else if (rq->data_len)
@@ -972,7 +973,7 @@ static void
 sd_spinup_disk(struct scsi_disk *sdkp, char *diskname)
 {
        unsigned char cmd[10];
-       unsigned long spintime_value = 0;
+       unsigned long spintime_expire = 0;
        int retries, spintime;
        unsigned int the_result;
        struct scsi_sense_hdr sshdr;
@@ -1049,12 +1050,27 @@ sd_spinup_disk(struct scsi_disk *sdkp, char *diskname)
                                scsi_execute_req(sdkp->device, cmd, DMA_NONE,
                                                 NULL, 0, &sshdr,
                                                 SD_TIMEOUT, SD_MAX_RETRIES);
-                               spintime_value = jiffies;
+                               spintime_expire = jiffies + 100 * HZ;
+                               spintime = 1;
                        }
-                       spintime = 1;
                        /* Wait 1 second for next try */
                        msleep(1000);
                        printk(".");
+
+               /*
+                * Wait for USB flash devices with slow firmware.
+                * Yes, this sense key/ASC combination shouldn't
+                * occur here.  It's characteristic of these devices.
+                */
+               } else if (sense_valid &&
+                               sshdr.sense_key == UNIT_ATTENTION &&
+                               sshdr.asc == 0x28) {
+                       if (!spintime) {
+                               spintime_expire = jiffies + 5 * HZ;
+                               spintime = 1;
+                       }
+                       /* Wait 1 second for next try */
+                       msleep(1000);
                } else {
                        /* we don't understand the sense code, so it's
                         * probably pointless to loop */
@@ -1066,8 +1082,7 @@ sd_spinup_disk(struct scsi_disk *sdkp, char *diskname)
                        break;
                }
                                
-       } while (spintime &&
-                time_after(spintime_value + 100 * HZ, jiffies));
+       } while (spintime && time_before_eq(jiffies, spintime_expire));
 
        if (spintime) {
                if (scsi_status_is_good(the_result))