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authorTejun Heo <htejun@gmail.com>2006-05-19 21:07:05 +0900
committerJeff Garzik <jeff@garzik.org>2006-05-20 00:39:08 -0400
commitf8bbfc247efb0e5fa69094614380768ce79afe17 (patch)
tree726b8eb9d41b5f7036c987b80282b90440a295ed /drivers/scsi/scsi_error.c
parenta20f33ffde8ba5fb27666aa1e228a45b7e3b8dcb (diff)
downloadop-kernel-dev-f8bbfc247efb0e5fa69094614380768ce79afe17.zip
op-kernel-dev-f8bbfc247efb0e5fa69094614380768ce79afe17.tar.gz
[PATCH] SCSI: make scsi_implement_eh() generic API for SCSI transports
libata implemented a feature to schedule EH without an associated EH by manipulating shost->host_eh_scheduled in ata_scsi_schedule_eh() directly. Move this function to scsi_error.c and rename it to scsi_schedule_eh(). It is now an exported API for SCSI transports and exported via new header file drivers/scsi/scsi_transport_api.h This patch also de-export scsi_eh_wakeup() which was exported specifically for ata_scsi_schedule_eh(). Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/scsi/scsi_error.c')
-rw-r--r--drivers/scsi/scsi_error.c23
1 files changed, 22 insertions, 1 deletions
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 9ca71cb..346ab72 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -56,7 +56,28 @@ void scsi_eh_wakeup(struct Scsi_Host *shost)
printk("Waking error handler thread\n"));
}
}
-EXPORT_SYMBOL_GPL(scsi_eh_wakeup);
+
+/**
+ * scsi_schedule_eh - schedule EH for SCSI host
+ * @shost: SCSI host to invoke error handling on.
+ *
+ * Schedule SCSI EH without scmd.
+ **/
+void scsi_schedule_eh(struct Scsi_Host *shost)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(shost->host_lock, flags);
+
+ if (scsi_host_set_state(shost, SHOST_RECOVERY) == 0 ||
+ scsi_host_set_state(shost, SHOST_CANCEL_RECOVERY) == 0) {
+ shost->host_eh_scheduled++;
+ scsi_eh_wakeup(shost);
+ }
+
+ spin_unlock_irqrestore(shost->host_lock, flags);
+}
+EXPORT_SYMBOL_GPL(scsi_schedule_eh);
/**
* scsi_eh_scmd_add - add scsi cmd to error handling.
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