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authorDavid S. Miller <davem@davemloft.net>2009-11-06 04:52:50 -0800
committerDavid S. Miller <davem@davemloft.net>2009-11-06 04:52:50 -0800
commit0fb18c4777ff424c1db694af98443a201fa4fc30 (patch)
tree21451127e368e53ee95557d5cf35f5f012f8ec52
parent9bd7496f5dd488e109e91d9d5743915fb4dfbfde (diff)
downloadlinux-2.6.34-ux500-0fb18c4777ff424c1db694af98443a201fa4fc30.tar.gz
Revert "ide: try to use PIO Mode 0 during probe if possible"
This reverts commit 6029336426a2b43e4bc6f4a84be8789a047d139e. Ok, we really do need to revert this, even with Bart's sis5513.c fix in there. The problem is that several driver's ->set_pio_mode() method depends upon the drive->media type being set properly. Most of them use this to enable prefetching, which can only be done for disk media. But the commit being reverted here calls ->set_pio_mode() before it's setup. Actually it considers everything disk because that is the default media type set by ide_port_init_devices_data(). The set of drivers that depend upon the media type in their ->set_pio_method() are: drivers/ide/alim15x3.c drivers/ide/it8172.c drivers/ide/it8213.c drivers/ide/pdc202xx_old.c drivers/ide/piix.c drivers/ide/qd65xx.c drivers/ide/sis5513.c drivers/ide/slc90e66.c And it is possible that we could fix this by guarding the prefetching and other media dependent setting changes with a test on IDE_PFLAG_PROBING in hwif->port_flags, that's simply too risky for 2.6.32-rcX and -stable. Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/ide/ide-probe.c9
1 files changed, 0 insertions, 9 deletions
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 63c53d65e87..4d76ba47309 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -1046,15 +1046,6 @@ static void ide_port_init_devices(ide_hwif_t *hwif)
if (port_ops && port_ops->init_dev)
port_ops->init_dev(drive);
}
-
- ide_port_for_each_dev(i, drive, hwif) {
- /*
- * default to PIO Mode 0 before we figure out
- * the most suited mode for the attached device
- */
- if (port_ops && port_ops->set_pio_mode)
- port_ops->set_pio_mode(drive, 0);
- }
}
static void ide_init_port(ide_hwif_t *hwif, unsigned int port,