[ARM] Ensure sl82c105 IDE interfaces are serialized when using DMA
We don't want to reset the DMA state machine while the other
channel is in use.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/drivers/ide/pci/sl82c105.c b/drivers/ide/pci/sl82c105.c
index 6466db5..8a5c7b2 100644
--- a/drivers/ide/pci/sl82c105.c
+++ b/drivers/ide/pci/sl82c105.c
@@ -465,6 +465,9 @@
hwif->autodma = 1;
hwif->drives[0].autodma = hwif->autodma;
hwif->drives[1].autodma = hwif->autodma;
+
+ if (hwif->mate)
+ hwif->serialized = hwif->mate->serialized = 1;
#endif /* CONFIG_BLK_DEV_IDEDMA */
}
hwif->OUTB(dma_state, hwif->dma_base + 2);