diff options
| -rw-r--r-- | drivers/scsi/hpsa.c | 43 |
1 files changed, 40 insertions, 3 deletions
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 74326b3b5341..13195072b234 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -677,6 +677,20 @@ lun_assigned: return 0; } +/* Update an entry in h->dev[] array. */ +static void hpsa_scsi_update_entry(struct ctlr_info *h, int hostno, + int entry, struct hpsa_scsi_dev_t *new_entry) +{ + /* assumes h->devlock is held */ + BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES); + + /* Raid level changed. */ + h->dev[entry]->raid_level = new_entry->raid_level; + dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d updated.\n", + scsi_device_type(new_entry->devtype), hostno, new_entry->bus, + new_entry->target, new_entry->lun); +} + /* Replace an entry from h->dev[] array. */ static void hpsa_scsi_replace_entry(struct ctlr_info *h, int hostno, int entry, struct hpsa_scsi_dev_t *new_entry, @@ -783,10 +797,25 @@ static inline int device_is_the_same(struct hpsa_scsi_dev_t *dev1, return 1; } +static inline int device_updated(struct hpsa_scsi_dev_t *dev1, + struct hpsa_scsi_dev_t *dev2) +{ + /* Device attributes that can change, but don't mean + * that the device is a different device, nor that the OS + * needs to be told anything about the change. + */ + if (dev1->raid_level != dev2->raid_level) + return 1; + return 0; +} + /* Find needle in haystack. If exact match found, return DEVICE_SAME, * and return needle location in *index. If scsi3addr matches, but not * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle - * location in *index. If needle not found, return DEVICE_NOT_FOUND. + * location in *index. + * In the case of a minor device attribute change, such as RAID level, just + * return DEVICE_UPDATED, along with the updated device's location in index. + * If needle not found, return DEVICE_NOT_FOUND. */ static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle, struct hpsa_scsi_dev_t *haystack[], int haystack_size, @@ -796,15 +825,19 @@ static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle, #define DEVICE_NOT_FOUND 0 #define DEVICE_CHANGED 1 #define DEVICE_SAME 2 +#define DEVICE_UPDATED 3 for (i = 0; i < haystack_size; i++) { if (haystack[i] == NULL) /* previously removed. */ continue; if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) { *index = i; - if (device_is_the_same(needle, haystack[i])) + if (device_is_the_same(needle, haystack[i])) { + if (device_updated(needle, haystack[i])) + return DEVICE_UPDATED; return DEVICE_SAME; - else + } else { return DEVICE_CHANGED; + } } } *index = -1; @@ -840,6 +873,8 @@ static void adjust_hpsa_scsi_table(struct ctlr_info *h, int hostno, * sd[] and remove them from h->dev[], and for any * devices which have changed, remove the old device * info and add the new device info. + * If minor device attributes change, just update + * the existing device structure. */ i = 0; nremoved = 0; @@ -860,6 +895,8 @@ static void adjust_hpsa_scsi_table(struct ctlr_info *h, int hostno, * at the bottom of hpsa_update_scsi_devices() */ sd[entry] = NULL; + } else if (device_change == DEVICE_UPDATED) { + hpsa_scsi_update_entry(h, hostno, i, sd[entry]); } i++; } |