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path: root/drivers/scsi/scsi_error.c
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Diffstat (limited to 'drivers/scsi/scsi_error.c')
-rw-r--r--drivers/scsi/scsi_error.c48
1 files changed, 14 insertions, 34 deletions
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 0fc8b48f052..895c9452be4 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -20,6 +20,7 @@
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/kernel.h>
+#include <linux/kthread.h>
#include <linux/interrupt.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
@@ -75,7 +76,7 @@ int scsi_eh_scmd_add(struct scsi_cmnd *scmd, int eh_flag)
scmd->eh_eflags |= eh_flag;
list_add_tail(&scmd->eh_entry, &shost->eh_cmd_q);
- set_bit(SHOST_RECOVERY, &shost->shost_state);
+ scsi_host_set_state(shost, SHOST_RECOVERY);
shost->host_failed++;
scsi_eh_wakeup(shost);
spin_unlock_irqrestore(shost->host_lock, flags);
@@ -115,7 +116,6 @@ void scsi_add_timer(struct scsi_cmnd *scmd, int timeout,
add_timer(&scmd->eh_timeout);
}
-EXPORT_SYMBOL(scsi_add_timer);
/**
* scsi_delete_timer - Delete/cancel timer for a given function.
@@ -143,7 +143,6 @@ int scsi_delete_timer(struct scsi_cmnd *scmd)
return rtn;
}
-EXPORT_SYMBOL(scsi_delete_timer);
/**
* scsi_times_out - Timeout function for normal scsi commands.
@@ -197,7 +196,8 @@ int scsi_block_when_processing_errors(struct scsi_device *sdev)
{
int online;
- wait_event(sdev->host->host_wait, (!test_bit(SHOST_RECOVERY, &sdev->host->shost_state)));
+ wait_event(sdev->host->host_wait, (sdev->host->shost_state !=
+ SHOST_RECOVERY));
online = scsi_device_online(sdev);
@@ -775,9 +775,11 @@ retry_tur:
__FUNCTION__, scmd, rtn));
if (rtn == SUCCESS)
return 0;
- else if (rtn == NEEDS_RETRY)
+ else if (rtn == NEEDS_RETRY) {
if (retry_cnt--)
goto retry_tur;
+ return 0;
+ }
return 1;
}
@@ -1458,7 +1460,7 @@ static void scsi_restart_operations(struct Scsi_Host *shost)
SCSI_LOG_ERROR_RECOVERY(3, printk("%s: waking up host to restart\n",
__FUNCTION__));
- clear_bit(SHOST_RECOVERY, &shost->shost_state);
+ scsi_host_set_state(shost, SHOST_RUNNING);
wake_up(&shost->host_wait);
@@ -1582,16 +1584,8 @@ int scsi_error_handler(void *data)
int rtn;
DECLARE_MUTEX_LOCKED(sem);
- /*
- * Flush resources
- */
-
- daemonize("scsi_eh_%d", shost->host_no);
-
current->flags |= PF_NOFREEZE;
-
shost->eh_wait = &sem;
- shost->ehandler = current;
/*
* Wake up the thread that created us.
@@ -1599,8 +1593,6 @@ int scsi_error_handler(void *data)
SCSI_LOG_ERROR_RECOVERY(3, printk("Wake up parent of"
" scsi_eh_%d\n",shost->host_no));
- complete(shost->eh_notify);
-
while (1) {
/*
* If we get a signal, it means we are supposed to go
@@ -1621,7 +1613,7 @@ int scsi_error_handler(void *data)
* semaphores isn't unreasonable.
*/
down_interruptible(&sem);
- if (shost->eh_kill)
+ if (kthread_should_stop())
break;
SCSI_LOG_ERROR_RECOVERY(1, printk("Error handler"
@@ -1660,22 +1652,6 @@ int scsi_error_handler(void *data)
* Make sure that nobody tries to wake us up again.
*/
shost->eh_wait = NULL;
-
- /*
- * Knock this down too. From this point on, the host is flying
- * without a pilot. If this is because the module is being unloaded,
- * that's fine. If the user sent a signal to this thing, we are
- * potentially in real danger.
- */
- shost->eh_active = 0;
- shost->ehandler = NULL;
-
- /*
- * If anyone is waiting for us to exit (i.e. someone trying to unload
- * a driver), then wake up that process to let them know we are on
- * the way out the door.
- */
- complete_and_exit(shost->eh_notify, 0);
return 0;
}
@@ -1846,12 +1822,16 @@ EXPORT_SYMBOL(scsi_reset_provider);
int scsi_normalize_sense(const u8 *sense_buffer, int sb_len,
struct scsi_sense_hdr *sshdr)
{
- if (!sense_buffer || !sb_len || (sense_buffer[0] & 0x70) != 0x70)
+ if (!sense_buffer || !sb_len)
return 0;
memset(sshdr, 0, sizeof(struct scsi_sense_hdr));
sshdr->response_code = (sense_buffer[0] & 0x7f);
+
+ if (!scsi_sense_valid(sshdr))
+ return 0;
+
if (sshdr->response_code >= 0x72) {
/*
* descriptor format