From: Zhang Changzhong <zhangchangzh...@huawei.com> All the NULL checks are pointless, clk_*() routines already deal with NULL just fine.
Signed-off-by: Zhang Changzhong <zhangchangzh...@huawei.com> Link: https://lore.kernel.org/r/1594972875-27631-1-git-send-email-zhangchangzh...@huawei.com Signed-off-by: Marc Kleine-Budde <m...@pengutronix.de> --- drivers/net/can/mscan/mscan.c | 28 ++++++++++------------------ 1 file changed, 10 insertions(+), 18 deletions(-) diff --git a/drivers/net/can/mscan/mscan.c b/drivers/net/can/mscan/mscan.c index 0b3532dd50e2..640ba1b356ec 100644 --- a/drivers/net/can/mscan/mscan.c +++ b/drivers/net/can/mscan/mscan.c @@ -541,16 +541,12 @@ static int mscan_open(struct net_device *dev) struct mscan_priv *priv = netdev_priv(dev); struct mscan_regs __iomem *regs = priv->reg_base; - if (priv->clk_ipg) { - ret = clk_prepare_enable(priv->clk_ipg); - if (ret) - goto exit_retcode; - } - if (priv->clk_can) { - ret = clk_prepare_enable(priv->clk_can); - if (ret) - goto exit_dis_ipg_clock; - } + ret = clk_prepare_enable(priv->clk_ipg); + if (ret) + goto exit_retcode; + ret = clk_prepare_enable(priv->clk_can); + if (ret) + goto exit_dis_ipg_clock; /* common open */ ret = open_candev(dev); @@ -584,11 +580,9 @@ static int mscan_open(struct net_device *dev) napi_disable(&priv->napi); close_candev(dev); exit_dis_can_clock: - if (priv->clk_can) - clk_disable_unprepare(priv->clk_can); + clk_disable_unprepare(priv->clk_can); exit_dis_ipg_clock: - if (priv->clk_ipg) - clk_disable_unprepare(priv->clk_ipg); + clk_disable_unprepare(priv->clk_ipg); exit_retcode: return ret; } @@ -607,10 +601,8 @@ static int mscan_close(struct net_device *dev) close_candev(dev); free_irq(dev->irq, dev); - if (priv->clk_can) - clk_disable_unprepare(priv->clk_can); - if (priv->clk_ipg) - clk_disable_unprepare(priv->clk_ipg); + clk_disable_unprepare(priv->clk_can); + clk_disable_unprepare(priv->clk_ipg); return 0; } -- 2.28.0
