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[SCSI] Fix VPD inquiry page wrapper

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Fix two bugs in the VPD page wrapper:

    - Don't return failure if the user asked for page 0

    - The end of buffer check failed to account for the page header size
      and consequently didn't work

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Stable Tree <stable@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Martin K. Petersen 2010-09-10 01:20:27 -04:00 committed by James Bottomley
parent 9c03f1622a
commit 16d3ea26f8
1 changed files with 2 additions and 2 deletions
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4
drivers/scsi/scsi.c
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@ -1046,13 +1046,13 @@ int scsi_get_vpd_page(struct scsi_device *sdev, u8 page, unsigned char *buf,
/* If the user actually wanted this page, we can skip the rest */
if (page == 0)
return -EINVAL;
return 0;
for (i = 0; i < min((int)buf[3], buf_len - 4); i++)
if (buf[i + 4] == page)
goto found;
if (i < buf[3] && i > buf_len)
if (i < buf[3] && i >= buf_len - 4)
/* ran off the end of the buffer, give us benefit of doubt */
goto found;
/* The device claims it doesn't support the requested page */