libata-core: Allow translation setting to fail

On some early drives (pre ATA1) this feature is not supported. If it
fails then we know the drive geometry is the hardware geometry and the
one we tried to set anyway so just carry on.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 2ad4dda..9cf46bf 100644 (file)
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -3985,6 +3985,11 @@ static unsigned int ata_dev_init_params(struct ata_device *dev,
        tf.device |= (heads - 1) & 0x0f; /* max head = num. of heads - 1 */
 
        err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0);
+       /* A clean abort indicates an original or just out of spec drive
+          and we should continue as we issue the setup based on the
+          drive reported working geometry */
+       if (err_mask == AC_ERR_DEV && (tf.feature & ATA_ABORTED))
+               err_mask = 0;
 
        DPRINTK("EXIT, err_mask=%x\n", err_mask);
        return err_mask;