linux-kernel - Re: [PATCH] PCI/ASPM: Remove redundant check of pcie_set

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Date:	Fri, 10 Jun 2016 19:09:04 -0500
From:	Bjorn Helgaas <helgaas@...nel.org>
To:	Shawn Lin <shawn.lin@...k-chips.com>
Cc:	Bjorn Helgaas <bhelgaas@...gle.com>, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] PCI/ASPM: Remove redundant check of pcie_set_clkpm

On Tue, May 24, 2016 at 05:32:10PM +0800, Shawn Lin wrote:
> Without supporting clock PM capable, if we want to disable
> clkpm, we don't need this extra check as it already be zero for
> the enable argument. And it's the same for enabling clkpm here.
> So let's remove this check.
> 
> Signed-off-by: Shawn Lin <shawn.lin@...k-chips.com>

Applied to pci/aspm for v4.8, thanks, Shawn.

> ---
> 
>  drivers/pci/pcie/aspm.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c
> index 2dfe7fd..0ec649d 100644
> --- a/drivers/pci/pcie/aspm.c
> +++ b/drivers/pci/pcie/aspm.c
> @@ -139,7 +139,7 @@ static void pcie_set_clkpm_nocheck(struct pcie_link_state *link, int enable)
>  static void pcie_set_clkpm(struct pcie_link_state *link, int enable)
>  {
>  	/* Don't enable Clock PM if the link is not Clock PM capable */
> -	if (!link->clkpm_capable && enable)
> +	if (!link->clkpm_capable)
>  		enable = 0;
>  	/* Need nothing if the specified equals to current state */
>  	if (link->clkpm_enabled == enable)
> -- 
> 2.3.7
> 
> 
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