AcoSail/kernel_optimize_test
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[SCSI] st: convert read_mode_page to use st_scsi_kern_execute

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This replaces st_do_scsi in read_mode_page (MODE_SENSE) with
st_scsi_kern_execute.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Kai Makisara <Kai.Makisara@kolumbus.fi>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
FUJITA Tomonori 2008-12-05 15:25:28 +09:00 committed by James Bottomley
parent 52107b2c57
commit 8ecf0d994a
1 changed files with 10 additions and 6 deletions
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16
drivers/scsi/st.c
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@ -2371,7 +2371,8 @@ static int st_set_options(struct scsi_tape *STp, long options)
static int read_mode_page(struct scsi_tape *STp, int page, int omit_block_descs)
{
unsigned char cmd[MAX_COMMAND_SIZE];
struct st_request *SRpnt = NULL;
struct st_request *SRpnt;
int ret;
memset(cmd, 0, MAX_COMMAND_SIZE);
cmd[0] = MODE_SENSE;
@ -2380,14 +2381,17 @@ static int read_mode_page(struct scsi_tape *STp, int page, int omit_block_descs)
cmd[2] = page;
cmd[4] = 255;
SRpnt = st_do_scsi(SRpnt, STp, cmd, cmd[4], DMA_FROM_DEVICE,
STp->device->request_queue->rq_timeout, 0, 1);
if (SRpnt == NULL)
return (STp->buffer)->syscall_result;
SRpnt = st_allocate_request(STp);
if (!SRpnt)
return STp->buffer->syscall_result;
ret = st_scsi_kern_execute(SRpnt, cmd, DMA_FROM_DEVICE,
STp->buffer->b_data, cmd[4],
STp->device->request_queue->rq_timeout,
MAX_RETRIES);
st_release_request(SRpnt);
return (STp->buffer)->syscall_result;
return ret ? : STp->buffer->syscall_result;
}