[PATCH] it821x: fix ide dma setup bug
Only enable dma for a valid speed setting.
Signed-off-by: Jens Axboe <axboe@suse.de>
diff --git a/drivers/ide/pci/it821x.c b/drivers/ide/pci/it821x.c
index 3cb0442..e9bad18 100644
--- a/drivers/ide/pci/it821x.c
+++ b/drivers/ide/pci/it821x.c
@@ -498,9 +498,14 @@
{
u8 speed = ide_dma_speed(drive, it821x_ratemask(drive));
- config_it821x_chipset_for_pio(drive, !speed);
- it821x_tune_chipset(drive, speed);
- return ide_dma_enable(drive);
+ if (speed) {
+ config_it821x_chipset_for_pio(drive, 0);
+ it821x_tune_chipset(drive, speed);
+
+ return ide_dma_enable(drive);
+ }
+
+ return 0;
}
/**