set_io_32bit() (ide_procset_t function) can race against running
PIO transfers. Fix it by using ide_spin_wait_hwgroup().
Signed-off-by: Bartlomiej Zolnierkiewicz <[EMAIL PROTECTED]>
---
drivers/ide/ide.c | 6 ++++++
1 file changed, 6 insertions(+)
Index: b/drivers/ide/ide.c
===================================================================
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -791,11 +791,17 @@ int set_io_32bit(ide_drive_t *drive, int
if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1))
return -EINVAL;
+ if (ide_spin_wait_hwgroup(drive))
+ return -EBUSY;
+
drive->io_32bit = arg;
#ifdef CONFIG_BLK_DEV_DTC2278
if (HWIF(drive)->chipset == ide_dtc2278)
HWIF(drive)->drives[!drive->select.b.unit].io_32bit = arg;
#endif /* CONFIG_BLK_DEV_DTC2278 */
+
+ spin_unlock_irq(&ide_lock);
+
return 0;
}
-
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