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

ide: check rq->cmd_type in drive_cmd_intr()

Browse Source 
drive_cmd_intr() is used by both REQ_TYPE_ATA_CMD and REQ_TYPE_ATA_TASK
but commands using PIO-in protocol are valid only for REQ_TYPE_ATA_CMD
(&args[4] in case of REQ_TYPE_ATA_TASK points to a value for IDE_LCYL_REG
register instead of the data buffer).  This fix allows REQ_TYPE_ATA_TASK
commands to use non-zero values for IDE_SECTOR_REG (args[3]).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2007-11-05 21:42:26 +01:00
parent f7d7f3fd21
commit 320112bd28
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/ide/ide-io.c
View File

@ -654,7 +654,8 @@ static ide_startstop_t drive_cmd_intr (ide_drive_t *drive)
int retries = 10;
local_irq_enable_in_hardirq();
if ((stat & DRQ_STAT) && args && args[3]) {
if (rq->cmd_type == REQ_TYPE_ATA_CMD &&
(stat & DRQ_STAT) && args && args[3]) {
u8 io_32bit = drive->io_32bit;
drive->io_32bit = 0;
hwif->ata_input_data(drive, &args[4], args[3] * SECTOR_WORDS);