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authorColin Tuckley <colin.tuckley@arm.com>2010-06-04 16:19:51 +0200
committerJeff Garzik <jgarzik@redhat.com>2010-06-07 16:03:13 -0400
commit7a4f876b876afb13856a79a0402f71b9dfbe86a8 (patch)
treeb0b4cad190e8406eb11513b3205552c7a5e3f256 /drivers/ata
parent4daedcfe8c6851aa01cc1997220f2577f4039c13 (diff)
downloadop-kernel-dev-7a4f876b876afb13856a79a0402f71b9dfbe86a8.zip
op-kernel-dev-7a4f876b876afb13856a79a0402f71b9dfbe86a8.tar.gz
sata_sil24: fix kernel panic on ARM caused by unaligned access in sata_sil24
The sata_sil24 driver has six 16-bit registers that are initialised with 32-bit writes. This cause a kernel panic on ARM due to the unaligned accesses which result. This patch changes the accesses to the correct 16-bit ones. Signed-off-by: Colin Tuckley <colin.tuckley@arm.com> Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata')
-rw-r--r--drivers/ata/sata_sil24.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/ata/sata_sil24.c b/drivers/ata/sata_sil24.c
index e925051..70b58fe 100644
--- a/drivers/ata/sata_sil24.c
+++ b/drivers/ata/sata_sil24.c
@@ -539,12 +539,12 @@ static void sil24_config_port(struct ata_port *ap)
writel(PORT_CS_IRQ_WOC, port + PORT_CTRL_CLR);
/* zero error counters. */
- writel(0x8000, port + PORT_DECODE_ERR_THRESH);
- writel(0x8000, port + PORT_CRC_ERR_THRESH);
- writel(0x8000, port + PORT_HSHK_ERR_THRESH);
- writel(0x0000, port + PORT_DECODE_ERR_CNT);
- writel(0x0000, port + PORT_CRC_ERR_CNT);
- writel(0x0000, port + PORT_HSHK_ERR_CNT);
+ writew(0x8000, port + PORT_DECODE_ERR_THRESH);
+ writew(0x8000, port + PORT_CRC_ERR_THRESH);
+ writew(0x8000, port + PORT_HSHK_ERR_THRESH);
+ writew(0x0000, port + PORT_DECODE_ERR_CNT);
+ writew(0x0000, port + PORT_CRC_ERR_CNT);
+ writew(0x0000, port + PORT_HSHK_ERR_CNT);
/* always use 64bit activation */
writel(PORT_CS_32BIT_ACTV, port + PORT_CTRL_CLR);
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