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authorFinn Thain <fthain@telegraphics.com.au>2016-02-23 10:07:08 +1100
committerMartin K. Petersen <martin.petersen@oracle.com>2016-03-01 09:38:50 -0500
commitccf6efd78317ef6265829c81a3e1a19f628b1a2d (patch)
tree54a9be6a8f9e585d1666b74a1070566504c774f8 /drivers/scsi
parentdc183965282d28c82f192e39cbfa91da85505a6f (diff)
ncr5380: Fix NCR5380_select() EH checks and result handling
Add missing checks for EH abort during arbitration and selection. Rework the handling of NCR5380_select() result to improve clarity. Fixes: 707d62b37fbb ("ncr5380: Fix EH during arbitration and selection") Tested-by: Michael Schmitz <schmitzmic@gmail.com> Cc: <stable@vger.kernel.org> # 4.5 Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/NCR5380.c16
-rw-r--r--drivers/scsi/atari_NCR5380.c16
2 files changed, 22 insertions, 10 deletions
diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c
index b1b3fac839bc..e8e579ad3d54 100644
--- a/drivers/scsi/NCR5380.c
+++ b/drivers/scsi/NCR5380.c
@@ -815,15 +815,17 @@ static void NCR5380_main(struct work_struct *work)
struct NCR5380_hostdata *hostdata =
container_of(work, struct NCR5380_hostdata, main_task);
struct Scsi_Host *instance = hostdata->host;
- struct scsi_cmnd *cmd;
int done;
do {
done = 1;
spin_lock_irq(&hostdata->lock);
- while (!hostdata->connected &&
- (cmd = dequeue_next_cmd(instance))) {
+ while (!hostdata->connected && !hostdata->selecting) {
+ struct scsi_cmnd *cmd = dequeue_next_cmd(instance);
+
+ if (!cmd)
+ break;
dsprintk(NDEBUG_MAIN, instance, "main: dequeued %p\n", cmd);
@@ -840,8 +842,7 @@ static void NCR5380_main(struct work_struct *work)
* entire unit.
*/
- cmd = NCR5380_select(instance, cmd);
- if (!cmd) {
+ if (!NCR5380_select(instance, cmd)) {
dsprintk(NDEBUG_MAIN, instance, "main: select complete\n");
} else {
dsprintk(NDEBUG_MAIN | NDEBUG_QUEUES, instance,
@@ -1056,6 +1057,11 @@ static struct scsi_cmnd *NCR5380_select(struct Scsi_Host *instance,
/* Reselection interrupt */
goto out;
}
+ if (!hostdata->selecting) {
+ /* Command was aborted */
+ NCR5380_write(MODE_REG, MR_BASE);
+ goto out;
+ }
if (err < 0) {
NCR5380_write(MODE_REG, MR_BASE);
shost_printk(KERN_ERR, instance,
diff --git a/drivers/scsi/atari_NCR5380.c b/drivers/scsi/atari_NCR5380.c
index 5629369b7981..a36c11be2b6f 100644
--- a/drivers/scsi/atari_NCR5380.c
+++ b/drivers/scsi/atari_NCR5380.c
@@ -923,7 +923,6 @@ static void NCR5380_main(struct work_struct *work)
struct NCR5380_hostdata *hostdata =
container_of(work, struct NCR5380_hostdata, main_task);
struct Scsi_Host *instance = hostdata->host;
- struct scsi_cmnd *cmd;
int done;
/*
@@ -936,8 +935,11 @@ static void NCR5380_main(struct work_struct *work)
done = 1;
spin_lock_irq(&hostdata->lock);
- while (!hostdata->connected &&
- (cmd = dequeue_next_cmd(instance))) {
+ while (!hostdata->connected && !hostdata->selecting) {
+ struct scsi_cmnd *cmd = dequeue_next_cmd(instance);
+
+ if (!cmd)
+ break;
dsprintk(NDEBUG_MAIN, instance, "main: dequeued %p\n", cmd);
@@ -960,8 +962,7 @@ static void NCR5380_main(struct work_struct *work)
#ifdef SUPPORT_TAGS
cmd_get_tag(cmd, cmd->cmnd[0] != REQUEST_SENSE);
#endif
- cmd = NCR5380_select(instance, cmd);
- if (!cmd) {
+ if (!NCR5380_select(instance, cmd)) {
dsprintk(NDEBUG_MAIN, instance, "main: select complete\n");
maybe_release_dma_irq(instance);
} else {
@@ -1257,6 +1258,11 @@ static struct scsi_cmnd *NCR5380_select(struct Scsi_Host *instance,
/* Reselection interrupt */
goto out;
}
+ if (!hostdata->selecting) {
+ /* Command was aborted */
+ NCR5380_write(MODE_REG, MR_BASE);
+ goto out;
+ }
if (err < 0) {
NCR5380_write(MODE_REG, MR_BASE);
shost_printk(KERN_ERR, instance,