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Fix Samsung pci-e SSD handling on some macbooks (rhbz 1161805)

This commit is contained in:
Josh Boyer 2014-11-10 15:03:43 -05:00
parent d2bc54d351
commit 351cced975
2 changed files with 75 additions and 0 deletions
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68
ahci-disable-MSI-instead-of-NCQ-on-Samsung-pci-e-SSD.patch Normal file
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@ -0,0 +1,68 @@
From c6f69fa54729350d1e3be454739993197255fd40 Mon Sep 17 00:00:00 2001
From: Tejun Heo <tj@kernel.org>
Date: Mon, 27 Oct 2014 10:30:52 -0400
Subject: [PATCH] ahci: disable MSI instead of NCQ on Samsung pci-e SSDs on
macbooks
From 44aecdabc85087e7c299d7a28e095e2b91894a51 Mon Sep 17 00:00:00 2001
From: Tejun Heo <tj@kernel.org>
Date: Mon, 27 Oct 2014 10:22:56 -0400
Samsung pci-e SSDs on macbooks failed miserably on NCQ commands, so
67809f85d31e ("ahci: disable NCQ on Samsung pci-e SSDs on macbooks")
disabled NCQ on them. It turns out that NCQ is fine as long as MSI is
not used, so let's turn off MSI and leave NCQ on.
Signed-off-by: Tejun Heo <tj@kernel.org>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=60731
Tested-by: <dorin@i51.org>
Tested-by: Imre Kaloz <kaloz@openwrt.org>
Cc: stable@vger.kernel.org
Fixes: 67809f85d31e ("ahci: disable NCQ on Samsung pci-e SSDs on macbooks")
---
drivers/ata/ahci.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index a0cc0edafc78..3d8a10e4f827 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -60,6 +60,7 @@ enum board_ids {
/* board IDs by feature in alphabetical order */
board_ahci,
board_ahci_ign_iferr,
+ board_ahci_nomsi,
board_ahci_noncq,
board_ahci_nosntf,
board_ahci_yes_fbs,
@@ -121,6 +122,13 @@ static const struct ata_port_info ahci_port_info[] = {
.udma_mask = ATA_UDMA6,
.port_ops = &ahci_ops,
},
+ [board_ahci_nomsi] = {
+ AHCI_HFLAGS (AHCI_HFLAG_NO_MSI),
+ .flags = AHCI_FLAG_COMMON,
+ .pio_mask = ATA_PIO4,
+ .udma_mask = ATA_UDMA6,
+ .port_ops = &ahci_ops,
+ },
[board_ahci_noncq] = {
AHCI_HFLAGS (AHCI_HFLAG_NO_NCQ),
.flags = AHCI_FLAG_COMMON,
@@ -475,10 +483,10 @@ static const struct pci_device_id ahci_pci_tbl[] = {
{ PCI_VDEVICE(ASMEDIA, 0x0612), board_ahci }, /* ASM1062 */
/*
- * Samsung SSDs found on some macbooks. NCQ times out.
- * https://bugzilla.kernel.org/show_bug.cgi?id=60731
+ * Samsung SSDs found on some macbooks. NCQ times out if MSI is
+ * enabled. https://bugzilla.kernel.org/show_bug.cgi?id=60731
*/
- { PCI_VDEVICE(SAMSUNG, 0x1600), board_ahci_noncq },
+ { PCI_VDEVICE(SAMSUNG, 0x1600), board_ahci_nomsi },
/* Enmotus */
{ PCI_DEVICE(0x1c44, 0x8000), board_ahci },
--
1.9.3

7
kernel.spec
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@ -803,6 +803,9 @@ Patch26086: Revert-iwlwifi-mvm-treat-EAPOLs-like-mgmt-frames-wrt.patch
Patch26087: crypto-algif-avoid-excessive-use-of-socket-buffer-in.patch
#rhbz 1161805
Patch26066: ahci-disable-MSI-instead-of-NCQ-on-Samsung-pci-e-SSD.patch
# git clone ssh://git.fedorahosted.org/git/kernel-arm64.git, git diff master...devel
Patch30000: kernel-arm64.patch
@ -1577,6 +1580,9 @@ ApplyPatch Revert-iwlwifi-mvm-treat-EAPOLs-like-mgmt-frames-wrt.patch
ApplyPatch crypto-algif-avoid-excessive-use-of-socket-buffer-in.patch
#rhbz 1161805
ApplyPatch ahci-disable-MSI-instead-of-NCQ-on-Samsung-pci-e-SSD.patch
%if 0%{?aarch64patches}
ApplyPatch kernel-arm64.patch
%ifnarch aarch64 # this is stupid, but i want to notice before secondary koji does.
@ -2396,6 +2402,7 @@ fi
# || ||
%changelog
* Mon Nov 10 2014 Josh Boyer <jwboyer@fedoraproject.org>
- Fix Samsung pci-e SSD handling on some macbooks (rhbz 1161805)
- Add patch to fix crypto allocation issues on PAGE_SIZE > 4k
* Fri Nov 07 2014 Josh Boyer <jwboyer@fedoraproject.org>