Don't enable local IRQs for PIO-in protocol in driver_cmd_intr().
While at it:
* Remove redundant rq->cmd_type check.
* Read status register after enabling local IRQs for no-data protocol.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
---
drivers/ide/ide-io.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
Index: b/drivers/ide/ide-io.c
===================================================================
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -638,17 +638,18 @@ static ide_startstop_t drive_cmd_intr (i
{
struct request *rq = HWGROUP(drive)->rq;
ide_hwif_t *hwif = HWIF(drive);
- u8 *args = (u8 *) rq->buffer;
- u8 stat = hwif->INB(IDE_STATUS_REG);
+ u8 *args = (u8 *)rq->buffer, pio_in = (args && args[3]) ? 1 : 0, stat;
- local_irq_enable_in_hardirq();
- if (rq->cmd_type == REQ_TYPE_ATA_CMD &&
- (stat & DRQ_STAT) && args && args[3]) {
+ if (pio_in) {
u8 io_32bit = drive->io_32bit;
+ stat = hwif->INB(IDE_STATUS_REG);
drive->io_32bit = 0;
hwif->ata_input_data(drive, &args[4], args[3] * SECTOR_WORDS);
drive->io_32bit = io_32bit;
stat = wait_drive_not_busy(drive);
+ } else {
+ local_irq_enable_in_hardirq();
+ stat = hwif->INB(IDE_STATUS_REG);
}
if (!OK_STAT(stat, READY_STAT, BAD_STAT))
-
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