RE: [PATCH] mmc: sdhci-esdhc-imx: correct CQHCI exit halt state check

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> -----Original Message-----
> From: Sebastian Falbesoner <sebastian.falbesoner@xxxxxxxxx>
> Sent: 2022年11月19日 11:04
> To: Adrian Hunter <adrian.hunter@xxxxxxxxx>; Bough Chen
> <haibo.chen@xxxxxxx>; Ulf Hansson <ulf.hansson@xxxxxxxxxx>
> Cc: linux-mmc@xxxxxxxxxxxxxxx; Sebastian Falbesoner
> <sebastian.falbesoner@xxxxxxxxx>
> Subject: [PATCH] mmc: sdhci-esdhc-imx: correct CQHCI exit halt state check
> 
> With the current logic the "failed to exit halt state" error would be shown even
> if any other bit than CQHCI_HALT was set in the CQHCI_CTL register, since the
> right hand side is always true. Fix this by using the correct operator (bit-wise
> instead of logical AND) to only check for the halt bit flag, which was obviously
> intended here.
> 
> Signed-off-by: Sebastian Falbesoner <sebastian.falbesoner@xxxxxxxxx>

Thanks for the catch. Please add the fix tag in the commit log, and then I can give my ack.

Best Regards
Haibo chen
> ---
>  drivers/mmc/host/sdhci-esdhc-imx.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c
> b/drivers/mmc/host/sdhci-esdhc-imx.c
> index 31ea0a2fce35..ffeb5759830f 100644
> --- a/drivers/mmc/host/sdhci-esdhc-imx.c
> +++ b/drivers/mmc/host/sdhci-esdhc-imx.c
> @@ -1512,7 +1512,7 @@ static void esdhc_cqe_enable(struct mmc_host
> *mmc)
>  	 * system resume back.
>  	 */
>  	cqhci_writel(cq_host, 0, CQHCI_CTL);
> -	if (cqhci_readl(cq_host, CQHCI_CTL) && CQHCI_HALT)
> +	if (cqhci_readl(cq_host, CQHCI_CTL) & CQHCI_HALT)
>  		dev_err(mmc_dev(host->mmc),
>  			"failed to exit halt state when enable CQE\n");
> 
> --
> 2.34.1





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