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| author | Stephen M. Cameron <scameron@beardog.cce.hp.com> | 2014-02-18 13:57:16 -0600 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2014-03-15 10:19:07 -0700 |
| commit | 1b70150af548f47edfe45a6b97392e4a80538274 (patch) | |
| tree | 56f21a59709b0193f772e495f02b5cc38a41b67a /drivers/scsi/hpsa.c | |
| parent | b7bb24eb4e9c42bbfb4e62a68924fc905bbc7fbf (diff) | |
| download | linux-stable-1b70150af548f47edfe45a6b97392e4a80538274.tar.gz linux-stable-1b70150af548f47edfe45a6b97392e4a80538274.tar.bz2 linux-stable-1b70150af548f47edfe45a6b97392e4a80538274.zip | |
[SCSI] hpsa: do not inquire for unsupported ioaccel status vpd page
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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) |