Re: [PATCH v2] Loongson: Lemote-2F: Fixup of _rdmsr and _wrmsr

[Wu Zhangjin <wuzhangjin@gmail.com>]

On Thu, 2010-03-11 at 10:57 +0800, Wu Zhangjin wrote:
> From: Wu Zhangjin <wuzhangjin@gmail.com>
> 
> Changes from the old version:
>   o Using raw spinlock instead of spinlock as suggested by David Daney.
[...]
> --- a/arch/mips/pci/ops-loongson2.c
> +++ b/arch/mips/pci/ops-loongson2.c
> @@ -180,15 +180,21 @@ struct pci_ops loongson_pci_ops = {
>  };
>  
>  #ifdef CONFIG_CS5536
> +DEFINE_RAW_SPINLOCK(msr_lock);
> +
>  void _rdmsr(u32 msr, u32 *hi, u32 *lo)
>  {
>  	struct pci_bus bus = {
>  		.number = PCI_BUS_CS5536
>  	};
>  	u32 devfn = PCI_DEVFN(PCI_IDSEL_CS5536, 0);
> +	unsigned long flags;
> +
> +	spin_lock_irqsave(&msr_lock, flags);

Please ignore this patch for the operations should be raw_ too.

Regards,
	Wu Zhangjin