sony-laptop: Enable EC on newer hardware

[safe/jmp/linux-2.6] / drivers / ata / pata_legacy.c

diff --git a/drivers/ata/pata_legacy.c b/drivers/ata/pata_legacy.c
index 6c1d778..e3bc1b4 100644 (file)
--- a/drivers/ata/pata_legacy.c
+++ b/drivers/ata/pata_legacy.c
@@ -283,9 +283,10 @@ static void pdc20230_set_piomode(struct ata_port *ap, struct ata_device *adev)
 static unsigned int pdc_data_xfer_vlb(struct ata_device *dev,
                        unsigned char *buf, unsigned int buflen, int rw)
 {
-       if (ata_id_has_dword_io(dev->id)) {
+       int slop = buflen & 3;
+       /* 32bit I/O capable *and* we need to write a whole number of dwords */
+       if (ata_id_has_dword_io(dev->id) && (slop == 0 || slop == 3)) {
                struct ata_port *ap = dev->link->ap;
-               int slop = buflen & 3;
                unsigned long flags;
 
                local_irq_save(flags);
@@ -735,7 +736,7 @@ static unsigned int vlb32_data_xfer(struct ata_device *adev, unsigned char *buf,
        struct ata_port *ap = adev->link->ap;
        int slop = buflen & 3;
 
-       if (ata_id_has_dword_io(adev->id)) {
+       if (ata_id_has_dword_io(adev->id) && (slop == 0 || slop == 3)) {
                if (rw == WRITE)
                        iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
                else