linux-kernel - Re: [PATCH] PCI-iproc: Delete unnecessary checks before two function calls

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Date:	Mon, 29 Jun 2015 09:45:14 -0700
From:	Ray Jui <rjui@...adcom.com>
To:	SF Markus Elfring <elfring@...rs.sourceforge.net>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Scott Branden <sbranden@...adcom.com>,
	<linux-pci@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<bcm-kernel-feedback-list@...adcom.com>
CC:	LKML <linux-kernel@...r.kernel.org>,
	<kernel-janitors@...r.kernel.org>,
	Hauke Mehrtens <hauke@...ke-m.de>,
	Julia Lawall <julia.lawall@...6.fr>
Subject: Re: [PATCH] PCI-iproc: Delete unnecessary checks before two function
 calls

Hi Markus,

On 6/28/2015 7:52 AM, SF Markus Elfring wrote:
> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Sun, 28 Jun 2015 16:42:04 +0200
> 
> The functions phy_exit() and phy_power_off() test whether their argument
> is NULL and then return immediately.
> Thus the test around the calls is not needed.
> 
> This issue was detected by using the Coccinelle software.
> 
> Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
> ---
>  drivers/pci/host/pcie-iproc.c | 7 ++-----
>  1 file changed, 2 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/pci/host/pcie-iproc.c b/drivers/pci/host/pcie-iproc.c
> index d77481e..f875821 100644
> --- a/drivers/pci/host/pcie-iproc.c
> +++ b/drivers/pci/host/pcie-iproc.c
> @@ -239,12 +239,9 @@ err_rm_root_bus:
>  	pci_remove_root_bus(bus);
>  
>  err_power_off_phy:
> -	if (pcie->phy)
> -		phy_power_off(pcie->phy);
> +	phy_power_off(pcie->phy);
>  err_exit_phy:
> -	if (pcie->phy)
> -		phy_exit(pcie->phy);
> -
> +	phy_exit(pcie->phy);
>  	return ret;
>  }
>  EXPORT_SYMBOL(iproc_pcie_setup);
> 

Thanks for catching this. Could you please help to make similar changes
to both phy_init and phy_power_on calls in the driver, to make it
consistent?

Thanks,

Ray
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