This is a note to let you know that I've just added the patch titled
pata_via: disable ATAPI DMA on AVERATEC 3200
to the 3.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
pata_via-disable-atapi-dma-on-averatec-3200.patch
and it can be found in the queue-3.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <sta...@kernel.org> know about it.
>From 6d0e194d2eefcaab6dbdca1f639748660144acb5 Mon Sep 17 00:00:00 2001
From: Tejun Heo <t...@kernel.org>
Date: Thu, 4 Aug 2011 11:15:07 +0200
Subject: pata_via: disable ATAPI DMA on AVERATEC 3200
From: Tejun Heo <t...@kernel.org>
commit 6d0e194d2eefcaab6dbdca1f639748660144acb5 upstream.
On AVERATEC 3200, pata_via causes memory corruption with ATAPI DMA,
which often leads to random kernel oops. The cause of the problem is
not well understood yet and only small subset of machines using the
controller seem affected. Blacklist ATAPI DMA on the machine.
Signed-off-by: Tejun Heo <t...@kernel.org>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=11426
Reported-and-tested-by: Jim Bray <jimsante...@gmail.com>
Cc: Alan Cox <a...@linux.intel.com>
Signed-off-by: Jeff Garzik <jgar...@pobox.com>
Signed-off-by: Greg Kroah-Hartman <gre...@suse.de>
---
drivers/ata/pata_via.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
--- a/drivers/ata/pata_via.c
+++ b/drivers/ata/pata_via.c
@@ -124,6 +124,17 @@ static const struct via_isa_bridge {
{ NULL }
};
+static const struct dmi_system_id no_atapi_dma_dmi_table[] = {
+ {
+ .ident = "AVERATEC 3200",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "AVERATEC"),
+ DMI_MATCH(DMI_BOARD_NAME, "3200"),
+ },
+ },
+ { }
+};
+
struct via_port {
u8 cached_device;
};
@@ -355,6 +366,13 @@ static unsigned long via_mode_filter(str
mask &= ~ ATA_MASK_UDMA;
}
}
+
+ if (dev->class == ATA_DEV_ATAPI &&
+ dmi_check_system(no_atapi_dma_dmi_table)) {
+ ata_dev_printk(dev, KERN_WARNING, "controller locks up on ATAPI
DMA, forcing PIO\n");
+ mask &= ATA_MASK_PIO;
+ }
+
return mask;
}
Patches currently in stable-queue which might be from t...@kernel.org are
queue-3.0/pata_via-disable-atapi-dma-on-averatec-3200.patch
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