I believe this version meets all Sergei's objections
Correct the logic for when we issue a set features for transfer mode
- If the device has IORDY and the controller has IORDY - set the mode
- If the device has IORDY and the controller does not - turn IORDY off
- If neither has IORDY do nothing
Signed-off-by: Alan Cox <[EMAIL PROTECTED]>
diff -u --new-file --recursive --exclude-from /usr/src/exclude
linux.vanilla-2.6.24-rc2-mm1/drivers/ata/libata-core.c
linux-2.6.24-rc2-mm1/drivers/ata/libata-core.c
--- linux.vanilla-2.6.24-rc2-mm1/drivers/ata/libata-core.c 2007-11-16
17:55:11.000000000 +0000
+++ linux-2.6.24-rc2-mm1/drivers/ata/libata-core.c 2007-11-16
23:42:27.000000000 +0000
@@ -4392,7 +4400,14 @@
tf.feature = SETFEATURES_XFER;
tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_POLLING;
tf.protocol = ATA_PROT_NODATA;
- tf.nsect = dev->xfer_mode;
+ /* If we are using IORDY we must send the mode setting command */
+ if (ata_pio_need_iordy(dev))
+ tf.nsect = dev->xfer_mode;
+ /* If the device has IORDY and the controller does not - turn it off */
+ else if (ata_id_has_iordy(dev->id))
+ tf.nsect = 0x01;
+ else /* In the ancient relic department - skip all of this */
+ return 0;
err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0);
-
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