diff options
| author | Wu Zhangjin <wuzhangjin@gmail.com> | 2010-05-19 09:12:17 +0800 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2010-07-05 17:17:20 +0100 |
| commit | f18b2f67eaae0dc0e3aaf1fd8ef320e2b69a514c (patch) | |
| tree | 89d6968bb6f07af931ed2216c3bbb6710d0f38d3 /arch/mips/loongson/common/cs5536/cs5536_ohci.c | |
| parent | e1df057df814a4a70a8711c0226a1d178c33edaa (diff) | |
MIPS: Loongson: CS5536: Add missing RDMSRs for IDE and USB
Add several missing RDMSRs for IDE and USB are missing to avoid the
agressive modification of the high 32 bits of the MSR.
Without this patch some usb devices may fail after printing "reset ehci
host ....." when reading the partition information.
Signed-off-by: Hu Hongbing <huhb@lemote.com>
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Zhang Le <r0bertz@gentoo.org>
Cc: Hu Hongbing <huhb@lemote.com>
Patchwork: http://patchwork.linux-mips.org/patch/1250/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/loongson/common/cs5536/cs5536_ohci.c')
| -rw-r--r-- | arch/mips/loongson/common/cs5536/cs5536_ohci.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/mips/loongson/common/cs5536/cs5536_ohci.c b/arch/mips/loongson/common/cs5536/cs5536_ohci.c index db5900aadd6b..bdedf512baf7 100644 --- a/arch/mips/loongson/common/cs5536/cs5536_ohci.c +++ b/arch/mips/loongson/common/cs5536/cs5536_ohci.c @@ -49,6 +49,8 @@ void pci_ohci_write_reg(int reg, u32 value) lo |= SOFT_BAR_OHCI_FLAG; _wrmsr(GLCP_MSR_REG(GLCP_SOFT_COM), hi, lo); } else if ((value & 0x01) == 0x00) { + _rdmsr(USB_MSR_REG(USB_OHCI), &hi, &lo); + lo = value; _wrmsr(USB_MSR_REG(USB_OHCI), hi, lo); value &= 0xfffffff0; |