mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-12 21:57:43 +00:00
ide-cd: use the new object_is_in_stack() helper
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Borislav Petkov <petkovbb@gmail.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Tejun Heo <htejun@gmail.com> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
parent
1a7809e349
commit
efa402d59e
1 changed files with 5 additions and 9 deletions
|
@ -1164,13 +1164,12 @@ static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
|
||||||
if (rq->bio || ((rq->cmd_type == REQ_TYPE_ATA_PC) && rq->data_len)) {
|
if (rq->bio || ((rq->cmd_type == REQ_TYPE_ATA_PC) && rq->data_len)) {
|
||||||
struct request_queue *q = drive->queue;
|
struct request_queue *q = drive->queue;
|
||||||
unsigned int alignment;
|
unsigned int alignment;
|
||||||
unsigned long addr;
|
char *buf;
|
||||||
unsigned long stack_mask = ~(THREAD_SIZE - 1);
|
|
||||||
|
|
||||||
if (rq->bio)
|
if (rq->bio)
|
||||||
addr = (unsigned long)bio_data(rq->bio);
|
buf = bio_data(rq->bio);
|
||||||
else
|
else
|
||||||
addr = (unsigned long)rq->data;
|
buf = rq->data;
|
||||||
|
|
||||||
info->dma = drive->using_dma;
|
info->dma = drive->using_dma;
|
||||||
|
|
||||||
|
@ -1181,11 +1180,8 @@ static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
|
||||||
* separate masks.
|
* separate masks.
|
||||||
*/
|
*/
|
||||||
alignment = queue_dma_alignment(q) | q->dma_pad_mask;
|
alignment = queue_dma_alignment(q) | q->dma_pad_mask;
|
||||||
if (addr & alignment || rq->data_len & alignment)
|
if ((unsigned long)buf & alignment || rq->data_len & alignment
|
||||||
info->dma = 0;
|
|| object_is_on_stack(buf))
|
||||||
|
|
||||||
if (!((addr & stack_mask) ^
|
|
||||||
((unsigned long)current->stack & stack_mask)))
|
|
||||||
info->dma = 0;
|
info->dma = 0;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
Loading…
Reference in a new issue