From: Grygorii Strashko <grygorii.strashko@ti.com>
To: Wang Qing <wangqing@vivo.com>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>, Samuel Zou <zou_wei@huawei.com>,
Kurt Kanzenbach <kurt@linutronix.de>,
Richard Cochran <richardcochran@gmail.com>,
<netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] net/ethernet: update ret when ptp_clock is ERROR
Date: Fri, 6 Nov 2020 13:34:04 +0200 [thread overview]
Message-ID: <fd46310f-0b4e-ac8b-b187-98438ee6bb60@ti.com> (raw)
In-Reply-To: <1604649411-24886-1-git-send-email-wangqing@vivo.com>
On 06/11/2020 09:56, Wang Qing wrote:
> We always have to update the value of ret, otherwise the
> error value may be the previous one.
>
> Signed-off-by: Wang Qing <wangqing@vivo.com>
> ---
> drivers/net/ethernet/ti/am65-cpts.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/net/ethernet/ti/am65-cpts.c b/drivers/net/ethernet/ti/am65-cpts.c
> index 75056c1..b77ff61
> --- a/drivers/net/ethernet/ti/am65-cpts.c
> +++ b/drivers/net/ethernet/ti/am65-cpts.c
> @@ -1001,8 +1001,7 @@ struct am65_cpts *am65_cpts_create(struct device *dev, void __iomem *regs,
there is
cpts->ptp_clock = ptp_clock_register(&cpts->ptp_info, cpts->dev);
> if (IS_ERR_OR_NULL(cpts->ptp_clock)) {
And ptp_clock_register() can return NULL only if PTP support is disabled.
In which case, we should not even get here.
So, I'd propose to s/IS_ERR_OR_NULL/IS_ERR above,
and just assign ret = PTR_ERR(cpts->ptp_clock) here.
> dev_err(dev, "Failed to register ptp clk %ld\n",
> PTR_ERR(cpts->ptp_clock));
> - if (!cpts->ptp_clock)
> - ret = -ENODEV;
> + ret = cpts->ptp_clock ? cpts->ptp_clock : (-ENODEV);
> goto refclk_disable;
> }
> cpts->phc_index = ptp_clock_index(cpts->ptp_clock);
>
--
Best regards,
grygorii
next prev parent reply other threads:[~2020-11-06 11:34 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-06 7:56 [PATCH] net/ethernet: update ret when ptp_clock is ERROR Wang Qing
2020-11-06 11:34 ` Grygorii Strashko [this message]
2020-11-06 12:11 ` Arnd Bergmann
2020-11-06 12:58 ` Kurt Kanzenbach
2020-11-06 14:48 ` Grygorii Strashko
2020-11-07 15:07 ` Richard Cochran
2020-11-07 15:08 ` Richard Cochran
2020-11-11 13:03 ` Grygorii Strashko
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