linux-kernel - Re: [PATCH] mmc: sdhci-esdhc-imx: Fix smatch errors

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Date: Fri, 29 Dec 2023 15:34:57 +0100
From: Stefan Wahren <wahrenst@....net>
To: Hardevsinh Palaniya <hardevsinh.palaniya@...iconsignals.io>,
 haibo.chen@....com, ulf.hansson@...aro.org, shawnguo@...nel.org,
 s.hauer@...gutronix.de
Cc: Adrian Hunter <adrian.hunter@...el.com>,
 Pengutronix Kernel Team <kernel@...gutronix.de>,
 Fabio Estevam <festevam@...il.com>, NXP Linux Team <linux-imx@....com>,
 linux-mmc@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mmc: sdhci-esdhc-imx: Fix smatch errors

Hi Hardevsinh,

the patch subject is a too generic. Maybe something like "fix
initialization of target_min/max"

Am 29.12.23 um 14:02 schrieb Hardevsinh Palaniya:
> Resolve smatch errors in esdhc_executing_tuning()
>
> esdhc_executing_tuning() error: uninitialized symbol 'target_min'
> esdhc_executing_tuning() error: uninitialized symbol 'target_max'
I think this deserve

Fixes: 541a95e64d76 ("mmc: sdhci-esdhc-imx: optimize the manual tuing
logic to get the best timing")

Thanks
> Signed-off-by: Hardevsinh Palaniya <hardevsinh.palaniya@...iconsignals.io>
>
> diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
> index 40a6e2f8145a..839b60138f04 100644
> --- a/drivers/mmc/host/sdhci-esdhc-imx.c
> +++ b/drivers/mmc/host/sdhci-esdhc-imx.c
> @@ -1166,6 +1166,8 @@ static int esdhc_executing_tuning(struct sdhci_host *host, u32 opcode)
>   	min = ESDHC_TUNE_CTRL_MIN;
>   	max = ESDHC_TUNE_CTRL_MIN;
>   	target_win_length = 0;
> +	target_min = 0;
> +	target_max = 0;
>   	while (max < ESDHC_TUNE_CTRL_MAX) {
>   		/* find the mininum delay first which can pass tuning */
>   		while (min < ESDHC_TUNE_CTRL_MAX) {