AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

memstick: mspro_block: Fix an error code in mspro_block_issue_req()

Browse Source 
We accidentally changed the error code from -EAGAIN to 1 when we did the
blk-mq conversion.

Maybe a contributing factor to this mistake is that it wasn't obvious
that the "while (chunk) {" condition is always true.  I have cleaned
that up as well.

Fixes: d0be12274d ("mspro_block: convert to blk-mq")
Cc: stable@vger.kernel.org
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Dan Carpenter 2019-05-10 14:24:41 +03:00 committed by Ulf Hansson
parent cd6c84d8f0
commit 61009f82a9
1 changed files with 6 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/memstick/core/mspro_block.c
View File

@ -694,13 +694,13 @@ static void h_mspro_block_setup_cmd(struct memstick_dev *card, u64 offset,
/*** Data transfer ***/
static int mspro_block_issue_req(struct memstick_dev *card, bool chunk)
static int mspro_block_issue_req(struct memstick_dev *card)
{
struct mspro_block_data *msb = memstick_get_drvdata(card);
u64 t_off;
unsigned int count;
while (chunk) {
while (true) {
msb->current_page = 0;
msb->current_seg = 0;
msb->seg_count = blk_rq_map_sg(msb->block_req->q,
@ -709,6 +709,7 @@ static int mspro_block_issue_req(struct memstick_dev *card, bool chunk)
if (!msb->seg_count) {
unsigned int bytes = blk_rq_cur_bytes(msb->block_req);
bool chunk;
chunk = blk_update_request(msb->block_req,
BLK_STS_RESOURCE,
@ -718,7 +719,7 @@ static int mspro_block_issue_req(struct memstick_dev *card, bool chunk)
__blk_mq_end_request(msb->block_req,
BLK_STS_RESOURCE);
msb->block_req = NULL;
break;
return -EAGAIN;
}
t_off = blk_rq_pos(msb->block_req);
@ -735,8 +736,6 @@ static int mspro_block_issue_req(struct memstick_dev *card, bool chunk)
memstick_new_req(card->host);
return 0;
}
return 1;
}
static int mspro_block_complete_req(struct memstick_dev *card, int error)
@ -779,7 +778,7 @@ static int mspro_block_complete_req(struct memstick_dev *card, int error)
chunk = blk_update_request(msb->block_req,
errno_to_blk_status(error), t_len);
if (chunk) {
error = mspro_block_issue_req(card, chunk);
error = mspro_block_issue_req(card);
if (!error)
goto out;
} else {
@ -849,7 +848,7 @@ static blk_status_t mspro_queue_rq(struct blk_mq_hw_ctx *hctx,
msb->block_req = bd->rq;
blk_mq_start_request(bd->rq);
if (mspro_block_issue_req(card, true))
if (mspro_block_issue_req(card))
msb->block_req = NULL;
spin_unlock_irq(&msb->q_lock);