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ide: don't enable local IRQs for PIO-in in driver_cmd_intr() (take 2)

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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.

v2:
* Re-add DRQ=1 check lost in v1 (noticed by Sergei).

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2008-01-26 20:13:12 +01:00
parent 852738f392
commit 18a056fecc
1 changed files with 9 additions and 6 deletions
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15
drivers/ide/ide-io.c
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@ -638,19 +638,22 @@ static ide_startstop_t drive_cmd_intr (ide_drive_t *drive)
{
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);
if ((stat & DRQ_STAT) == 0)
goto out;
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);
}
out:
if (!OK_STAT(stat, READY_STAT, BAD_STAT))
return ide_error(drive, "drive_cmd", stat);
/* calls ide_end_drive_cmd */