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_ehci.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_ehci.c')
| -rw-r--r-- | arch/mips/loongson/common/cs5536/cs5536_ehci.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/mips/loongson/common/cs5536/cs5536_ehci.c b/arch/mips/loongson/common/cs5536/cs5536_ehci.c index eaf8b86e3318..5b5cbba699b3 100644 --- a/arch/mips/loongson/common/cs5536/cs5536_ehci.c +++ b/arch/mips/loongson/common/cs5536/cs5536_ehci.c @@ -49,6 +49,8 @@ void pci_ehci_write_reg(int reg, u32 value) lo |= SOFT_BAR_EHCI_FLAG; _wrmsr(GLCP_MSR_REG(GLCP_SOFT_COM), hi, lo); } else if ((value & 0x01) == 0x00) { + _rdmsr(USB_MSR_REG(USB_EHCI), &hi, &lo); + lo = value; _wrmsr(USB_MSR_REG(USB_EHCI), hi, lo); value &= 0xfffffff0; |