diff options
| author | Don Brace <don.brace@pmcs.com> | 2015-11-04 22:50:31 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2015-11-09 18:34:19 +0100 |
| commit | 1d33d85d4e51d85ee986b603de90be4f0b2faf2c (patch) | |
| tree | b24e744b1bc5c6f72d39a828ca75549590d5ca1d /drivers/scsi | |
| parent | hpsa: check for null arguments to dev_printk (diff) | |
| download | linux-1d33d85d4e51d85ee986b603de90be4f0b2faf2c.tar.xz linux-1d33d85d4e51d85ee986b603de90be4f0b2faf2c.zip | |
hpsa: fix null device issues
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Manoj Kumar <manoj@linux.vnet.ibm.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>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/hpsa.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index b64913f9d880..446816664335 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -1135,7 +1135,7 @@ static int hpsa_find_target_lun(struct ctlr_info *h, return !found; } -static inline void hpsa_show_dev_msg(const char *level, struct ctlr_info *h, +static void hpsa_show_dev_msg(const char *level, struct ctlr_info *h, struct hpsa_scsi_dev_t *dev, char *description) { if (h == NULL || h->pdev == NULL || h->scsi_host == NULL) @@ -1419,6 +1419,9 @@ static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle, #define DEVICE_CHANGED 1 #define DEVICE_SAME 2 #define DEVICE_UPDATED 3 + if (needle == NULL) + return DEVICE_NOT_FOUND; + for (i = 0; i < haystack_size; i++) { if (haystack[i] == NULL) /* previously removed. */ continue; @@ -1581,6 +1584,8 @@ static void hpsa_figure_phys_disk_ptrs(struct ctlr_info *h, if (!logical_drive->offload_config) continue; for (j = 0; j < ndevices; j++) { + if (dev[j] == NULL) + continue; if (dev[j]->devtype != TYPE_DISK) continue; if (is_logical_dev_addr_mode(dev[j]->scsi3addr)) @@ -1624,6 +1629,8 @@ static void hpsa_update_log_drive_phys_drive_ptrs(struct ctlr_info *h, int i; for (i = 0; i < ndevices; i++) { + if (dev[i] == NULL) + continue; if (dev[i]->devtype != TYPE_DISK) continue; if (!is_logical_dev_addr_mode(dev[i]->scsi3addr)) @@ -1737,8 +1744,11 @@ static void adjust_hpsa_scsi_table(struct ctlr_info *h, /* Now that h->dev[]->phys_disk[] is coherent, we can enable * any logical drives that need it enabled. */ - for (i = 0; i < h->ndevices; i++) + for (i = 0; i < h->ndevices; i++) { + if (h->dev[i] == NULL) + continue; h->dev[i]->offload_enabled = h->dev[i]->offload_to_be_enabled; + } spin_unlock_irqrestore(&h->devlock, flags); @@ -1763,6 +1773,8 @@ static void adjust_hpsa_scsi_table(struct ctlr_info *h, sh = h->scsi_host; /* Notify scsi mid layer of any removed devices */ for (i = 0; i < nremoved; i++) { + if (removed[i] == NULL) + continue; if (removed[i]->expose_state & HPSA_SCSI_ADD) { struct scsi_device *sdev = scsi_device_lookup(sh, removed[i]->bus, @@ -1786,18 +1798,18 @@ static void adjust_hpsa_scsi_table(struct ctlr_info *h, /* Notify scsi mid layer of any added devices */ for (i = 0; i < nadded; i++) { + if (added[i] == NULL) + continue; if (!(added[i]->expose_state & HPSA_SCSI_ADD)) continue; if (scsi_add_device(sh, added[i]->bus, added[i]->target, added[i]->lun) == 0) continue; - hpsa_show_dev_msg(KERN_WARNING, h, added[i], - "addition failed, device not added."); + dev_warn(&h->pdev->dev, "addition failed, device not added."); /* now we have to remove it from h->dev, * since it didn't get added to scsi mid layer */ fixup_botched_add(h, added[i]); - added[i] = NULL; } free_and_out: |