[libata] Fix HDIO_DRIVE_* ioctl() Linux 3.9 regression

On Mon, Mar 25, 2013 at 06:26:50PM +0100, Ronald wrote:
> In reply to [1]: I have the same issue. Git bisect took 50+ rebuilds xD
>
> Smartd does not work anymore since 84a9a8cd9 ([libata] Set proper SK
> when CK_COND is set.).

> [1] http://www.spinics.net/lists/linux-ide/msg45268.html

It seems that the SAM_STAT_CHECK_CONDITION is not cleared
causing -EIO, because that patch modified sensebuf and
the check for clearing SAM_STAT_CHECK_CONDITION is no longer valid.

Fix that.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 318b41358187739fe0671fe1c0be118668575da8..ff44787e5a457930dc8580ed72cb09386a8acf13 100644 (file)
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -532,8 +532,8 @@ int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg)
                        struct scsi_sense_hdr sshdr;
                        scsi_normalize_sense(sensebuf, SCSI_SENSE_BUFFERSIZE,
                                             &sshdr);
-                       if (sshdr.sense_key == 0 &&
-                           sshdr.asc == 0 && sshdr.ascq == 0)
+                       if (sshdr.sense_key == RECOVERED_ERROR &&
+                           sshdr.asc == 0 && sshdr.ascq == 0x1d)
                                cmd_result &= ~SAM_STAT_CHECK_CONDITION;
                }
 
@@ -618,8 +618,8 @@ int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg)
                        struct scsi_sense_hdr sshdr;
                        scsi_normalize_sense(sensebuf, SCSI_SENSE_BUFFERSIZE,
                                                &sshdr);
-                       if (sshdr.sense_key == 0 &&
-                               sshdr.asc == 0 && sshdr.ascq == 0)
+                       if (sshdr.sense_key == RECOVERED_ERROR &&
+                           sshdr.asc == 0 && sshdr.ascq == 0x1d)
                                cmd_result &= ~SAM_STAT_CHECK_CONDITION;
                }