diff options
author | Rafael J. Wysocki <rjw@sisk.pl> | 2009-08-05 23:56:54 +0200 |
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committer | Rafael J. Wysocki <rjw@sisk.pl> | 2009-08-05 23:56:54 +0200 |
commit | c00aafcd4977769e8728292302ddbbb8b1082fab (patch) | |
tree | 5766bcfbfd7b24816b54298b8ef34054f8cf0fae /drivers/scsi/sd.c | |
parent | 2e6713c7662cc5ebc7346b033c404cb2f708fd51 (diff) | |
parent | 90bc1a658a53f8832ee799685703977a450e5af9 (diff) |
Merge branch 'master' into for-linus
Diffstat (limited to 'drivers/scsi/sd.c')
-rw-r--r-- | drivers/scsi/sd.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 5616cd780ff..b7b9fec67a9 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -1840,6 +1840,18 @@ static void sd_read_block_characteristics(struct scsi_disk *sdkp) kfree(buffer); } +static int sd_try_extended_inquiry(struct scsi_device *sdp) +{ + /* + * Although VPD inquiries can go to SCSI-2 type devices, + * some USB ones crash on receiving them, and the pages + * we currently ask for are for SPC-3 and beyond + */ + if (sdp->scsi_level > SCSI_SPC_2) + return 1; + return 0; +} + /** * sd_revalidate_disk - called the first time a new disk is seen, * performs disk spin up, read_capacity, etc. @@ -1877,8 +1889,12 @@ static int sd_revalidate_disk(struct gendisk *disk) */ if (sdkp->media_present) { sd_read_capacity(sdkp, buffer); - sd_read_block_limits(sdkp); - sd_read_block_characteristics(sdkp); + + if (sd_try_extended_inquiry(sdp)) { + sd_read_block_limits(sdkp); + sd_read_block_characteristics(sdkp); + } + sd_read_write_protect_flag(sdkp, buffer); sd_read_cache_type(sdkp, buffer); sd_read_app_tag_own(sdkp, buffer); |