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| author | Ming Lei <ming.lei@canonical.com> | 2011-10-07 11:50:22 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-11-11 09:35:50 -0800 |
| commit | e277beeb68b1f1e9326d57913a41549744002449 (patch) | |
| tree | 1c88ef20e2dc23ad8a9d3a5a6d0e314c3ce93649 /net/core | |
| parent | 363d0372b331c8ac8ef54c0bd81aadea43cfd74c (diff) | |
| download | kernel_samsung_smdk4412-e277beeb68b1f1e9326d57913a41549744002449.zip kernel_samsung_smdk4412-e277beeb68b1f1e9326d57913a41549744002449.tar.gz kernel_samsung_smdk4412-e277beeb68b1f1e9326d57913a41549744002449.tar.bz2 | |
ata_piix: make DVD Drive recognisable on systems with Intel Sandybridge chipsets(v2)
commit 5e5a4f5d5a08c9c504fe956391ac3dae2c66556d upstream.
This quirk patch fixes one kind of bug inside some Intel Sandybridge
chipsets, see reports from
https://bugzilla.kernel.org/show_bug.cgi?id=40592.
Many guys also have reported the problem before:
https://bugs.launchpad.net/bugs/737388
https://bugs.launchpad.net/bugs/794642
https://bugs.launchpad.net/bugs/782389
......
With help from Tejun, the problem is found to be caused by 32bit PIO
mode, so introduce the quirk patch to disable 32bit PIO on SATA piix
for some Sandybridge CPT chipsets.
Seth also tested the patch on all five affected chipsets
(pci device ID: 0x1c00, 0x1c01, 0x1d00, 0x1e00, 0x1e01), and found
the patch does fix the problem.
Tested-by: Heasley, Seth <seth.heasley@intel.com>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Acked-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'net/core')
0 files changed, 0 insertions, 0 deletions