hpsa: abandon rescans on memory alloaction failures.
Abandon and reschedule rescan process only if device inquiries
fail due to mem alloc failures, which are likely to occur for
all devices.
Otherwise, skip device if inquiry fails for other reasons,
and continue rescanning process for other devices.
Reviewed-by: Scott Teel <scott.teel@pmcs.com>
Reviewed-by: Justin Lindley <justin.lindley@pmcs.com>
Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Don Brace <don.brace@pmcs.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index f010b8e..ce0341a 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -3366,10 +3366,13 @@
unsigned char *inq_buff;
unsigned char *obdr_sig;
+ int rc = 0;
inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL);
- if (!inq_buff)
+ if (!inq_buff) {
+ rc = -ENOMEM;
goto bail_out;
+ }
/* Do an inquiry to the device to see what it is. */
if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff,
@@ -3377,6 +3380,7 @@
/* Inquiry failed (msg printed already) */
dev_err(&h->pdev->dev,
"hpsa_update_device_info: inquiry failed\n");
+ rc = -EIO;
goto bail_out;
}
@@ -3426,7 +3430,7 @@
bail_out:
kfree(inq_buff);
- return 1;
+ return rc;
}
static void hpsa_update_device_supports_aborts(struct ctlr_info *h,
@@ -3794,6 +3798,7 @@
n_ext_target_devs = 0;
for (i = 0; i < nphysicals + nlogicals + 1; i++) {
u8 *lunaddrbytes, is_OBDR = 0;
+ int rc = 0;
/* Figure out where the LUN ID info is coming from */
lunaddrbytes = figure_lunaddrbytes(h, raid_ctlr_position,
@@ -3806,11 +3811,20 @@
continue;
/* Get device type, vendor, model, device id */
- if (hpsa_update_device_info(h, lunaddrbytes, tmpdevice,
- &is_OBDR)) {
+ rc = hpsa_update_device_info(h, lunaddrbytes, tmpdevice,
+ &is_OBDR);
+ if (rc == -ENOMEM) {
+ dev_warn(&h->pdev->dev,
+ "Out of memory, rescan deferred.\n");
h->drv_req_rescan = 1;
- continue; /* skip it if we can't talk to it. */
+ goto out;
}
+ if (rc) {
+ dev_warn(&h->pdev->dev,
+ "Inquiry failed, skipping device.\n");
+ continue;
+ }
+
figure_bus_target_lun(h, lunaddrbytes, tmpdevice);
hpsa_update_device_supports_aborts(h, tmpdevice, lunaddrbytes);
this_device = currentsd[ncurrent];