linux-kernel - Re: [PATCH] dmaengine: imx-sdma: remove always true comparisons

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Message-ID: <CAOMZO5AYWKw2RBjt+sEveejzwmD1o0768FiCfa9ObHupENsweQ@mail.gmail.com>
Date:   Wed, 15 Jul 2020 10:16:57 -0300
From:   Fabio Estevam <festevam@...il.com>
To:     Vinod Koul <vkoul@...nel.org>
Cc:     dmaengine@...r.kernel.org, Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        NXP Linux Team <linux-imx@....com>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] dmaengine: imx-sdma: remove always true comparisons

Hi Vinod,

On Wed, Jul 15, 2020 at 10:01 AM Vinod Koul <vkoul@...nel.org> wrote:
>
> sdmac->event_id0 is of type unsigned int and hence can never be less
> than zero. Driver compares this at couple of places with greater than or
> equal to zero, these are always true so should be dropped
>
> drivers/dma/imx-sdma.c:1336:23: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
> drivers/dma/imx-sdma.c:1637:23: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
>
> Signed-off-by: Vinod Koul <vkoul@...nel.org>

I have already fixed this problem and you have already applied my patch:
https://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git/commit/?h=next&id=2f57b8d57673af2c2caf8c2c7bef01be940a5c2c