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[SCSI] stex: Fix for potential invalid response

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The interrupt routine is good for normal cases. However, if the firmware
is abnormal and returns an invalid response, the driver may reuse a
ccb structure that has already been handled. This may cause problem.
Fix this by setting the req member to NULL. Next time we know the
response is invalid and handle accordingly if req is NULL.

Signed-off-by: Ed Lin <ed.lin@promise.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Ed Lin - PTU 2009-01-26 02:40:11 -08:00 committed by James Bottomley
parent a4976d6886
commit dd48ebf7ca
1 changed files with 1 additions and 0 deletions
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drivers/scsi/stex.c
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@ -746,6 +746,7 @@ static void stex_mu_intr(struct st_hba *hba, u32 doorbell)
stex_copy_data(ccb, resp, size);
}
ccb->req = NULL;
ccb->srb_status = resp->srb_status;
ccb->scsi_status = resp->scsi_status;