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SubjectRE: [PATCH net-next] net: xilinx: remove redundant null check before clk_disable_unprepare()
Date
> -----Original Message-----
> From: Zhang Changzhong <zhangchangzhong@huawei.com>
> Sent: Monday, September 7, 2020 6:32 PM
> To: Radhey Shyam Pandey <radheys@xilinx.com>; davem@davemloft.net;
> kuba@kernel.org; Michal Simek <michals@xilinx.com>
> Cc: netdev@vger.kernel.org; linux-kernel@vger.kernel.org
> Subject: [PATCH net-next] net: xilinx: remove redundant null check before
> clk_disable_unprepare()
>
> Because clk_prepare_enable() and clk_disable_unprepare() already checked
> NULL clock parameter, so the additional checks are unnecessary, just
> remove them.
>
> Reported-by: Hulk Robot <hulkci@huawei.com>
> Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>

Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>

Thanks!
> ---
> drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
> b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
> index fa5dc299..9aafd3e 100644
> --- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
> +++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
> @@ -2038,8 +2038,7 @@ static int axienet_remove(struct platform_device
> *pdev)
>
> axienet_mdio_teardown(lp);
>
> - if (lp->clk)
> - clk_disable_unprepare(lp->clk);
> + clk_disable_unprepare(lp->clk);
>
> of_node_put(lp->phy_node);
> lp->phy_node = NULL;
> --
> 2.9.5

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