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authorMike Christie <michaelc@cs.wisc.edu>2008-03-01 01:25:19 +0100
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2008-04-07 19:15:41 +0200
commit30bd7df8ced23eefec87a5cda96dc99b002ed9da (patch)
tree80702b8ba0454540cc7ea19cfe49871192ab860c /include/scsi
parent[SCSI] ps3rom: Simplify fill_from_dev_buffer() (diff)
downloadlinux-30bd7df8ced23eefec87a5cda96dc99b002ed9da.tar.xz
linux-30bd7df8ced23eefec87a5cda96dc99b002ed9da.zip
[SCSI] scsi_error: add target reset handler
The problem is that serveral drivers are sending a target reset from the device reset handler, and if we have multiple devices a target reset gets sent for each device when only one would be sufficient. And if we do a target reset it affects all the commands on the target so the device reset handler code only cleaning up one devices's commands makes programming the driver a little more difficult than it should be. This patch adds a target reset handler, which drivers can use to send a target reset. If successful it cleans up the commands for a devices accessed through that starget. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'include/scsi')
-rw-r--r--include/scsi/scsi_eh.h1
-rw-r--r--include/scsi/scsi_host.h1
2 files changed, 2 insertions, 0 deletions
diff --git a/include/scsi/scsi_eh.h b/include/scsi/scsi_eh.h
index 25071d5d9bf8..37a7614f62f4 100644
--- a/include/scsi/scsi_eh.h
+++ b/include/scsi/scsi_eh.h
@@ -64,6 +64,7 @@ extern int scsi_get_sense_info_fld(const u8 * sense_buffer, int sb_len,
#define SCSI_TRY_RESET_DEVICE 1
#define SCSI_TRY_RESET_BUS 2
#define SCSI_TRY_RESET_HOST 3
+#define SCSI_TRY_RESET_TARGET 4
extern int scsi_reset_provider(struct scsi_device *, int);
diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h
index 530ff4c553f8..49132862bfaa 100644
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -172,6 +172,7 @@ struct scsi_host_template {
*/
int (* eh_abort_handler)(struct scsi_cmnd *);
int (* eh_device_reset_handler)(struct scsi_cmnd *);
+ int (* eh_target_reset_handler)(struct scsi_cmnd *);
int (* eh_bus_reset_handler)(struct scsi_cmnd *);
int (* eh_host_reset_handler)(struct scsi_cmnd *);