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| author | Alan Stern <stern@rowland.harvard.edu> | 2008-07-21 10:25:52 -0400 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-07-26 15:14:56 -0400 |
| commit | 12265709ac6e197f4d40d9ec1fd3af97b4196a35 (patch) | |
| tree | 479b48c2082e374b20f1767fef7768b6ea696f84 | |
| parent | af55ff675a8461da6a632320710b050af4366e0c (diff) | |
| download | lwn-12265709ac6e197f4d40d9ec1fd3af97b4196a35.tar.gz lwn-12265709ac6e197f4d40d9ec1fd3af97b4196a35.zip | |
[SCSI] scsi_eh_prep_cmnd should save scmd->underflow
This patch (as1116) fixes a bug in scsi_eh_prep_cmnd() and
scsi_eh_restore_cmnd(). These routines are supposed to save any
values they change and restore them later, but someone forgot to
save & restore scmd->underflow.
This fixes part of the problem reported in Bugzilla #9638.
[jejb: fix up rejections around DIF/DIX]
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| -rw-r--r-- | drivers/scsi/scsi_error.c | 2 | ||||
| -rw-r--r-- | include/scsi/scsi_eh.h | 1 |
2 files changed, 3 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index fc4b2d05f2e1..171b82d748cf 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -667,6 +667,7 @@ void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd, struct scsi_eh_save *ses, ses->sdb = scmd->sdb; ses->next_rq = scmd->request->next_rq; ses->result = scmd->result; + ses->underflow = scmd->underflow; ses->prot_op = scmd->prot_op; scmd->prot_op = SCSI_PROT_NORMAL; @@ -727,6 +728,7 @@ void scsi_eh_restore_cmnd(struct scsi_cmnd* scmd, struct scsi_eh_save *ses) scmd->sdb = ses->sdb; scmd->request->next_rq = ses->next_rq; scmd->result = ses->result; + scmd->underflow = ses->underflow; scmd->prot_op = ses->prot_op; } EXPORT_SYMBOL(scsi_eh_restore_cmnd); diff --git a/include/scsi/scsi_eh.h b/include/scsi/scsi_eh.h index e5499ed0e376..06a8790893ef 100644 --- a/include/scsi/scsi_eh.h +++ b/include/scsi/scsi_eh.h @@ -74,6 +74,7 @@ struct scsi_eh_save { /* saved state */ int result; enum dma_data_direction data_direction; + unsigned underflow; unsigned char cmd_len; unsigned char prot_op; unsigned char *cmnd; |