diff options
Diffstat (limited to 'drivers/scsi/hpsa.c')
| -rw-r--r-- | drivers/scsi/hpsa.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 82ae83efae98..5d3ce25a2566 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -2064,6 +2064,49 @@ static int hpsa_get_raid_map(struct ctlr_info *h, return rc; } +static int hpsa_vpd_page_supported(struct ctlr_info *h, + unsigned char scsi3addr[], u8 page) +{ + int rc; + int i; + int pages; + unsigned char *buf, bufsize; + + buf = kzalloc(256, GFP_KERNEL); + if (!buf) + return 0; + + /* Get the size of the page list first */ + rc = hpsa_scsi_do_inquiry(h, scsi3addr, + VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES, + buf, HPSA_VPD_HEADER_SZ); + if (rc != 0) + goto exit_unsupported; + pages = buf[3]; + if ((pages + HPSA_VPD_HEADER_SZ) <= 255) + bufsize = pages + HPSA_VPD_HEADER_SZ; + else + bufsize = 255; + + /* Get the whole VPD page list */ + rc = hpsa_scsi_do_inquiry(h, scsi3addr, + VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES, + buf, bufsize); + if (rc != 0) + goto exit_unsupported; + + pages = buf[3]; + for (i = 1; i <= pages; i++) + if (buf[3 + i] == page) + goto exit_supported; +exit_unsupported: + kfree(buf); + return 0; +exit_supported: + kfree(buf); + return 1; +} + static void hpsa_get_ioaccel_status(struct ctlr_info *h, unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device) { @@ -2077,6 +2120,8 @@ static void hpsa_get_ioaccel_status(struct ctlr_info *h, buf = kzalloc(64, GFP_KERNEL); if (!buf) return; + if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_IOACCEL_STATUS)) + goto out; rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_IOACCEL_STATUS, buf, 64); if (rc != 0) |