| Message ID | 20221119030400.1789919-1-sebastian.falbesoner@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | mmc: sdhci-esdhc-imx: correct CQHCI exit halt state check | expand |
> -----Original Message----- > From: Sebastian Falbesoner <sebastian.falbesoner@gmail.com> > Sent: 2022年11月19日 11:04 > To: Adrian Hunter <adrian.hunter@intel.com>; Bough Chen > <haibo.chen@nxp.com>; Ulf Hansson <ulf.hansson@linaro.org> > Cc: linux-mmc@vger.kernel.org; Sebastian Falbesoner > <sebastian.falbesoner@gmail.com> > 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@gmail.com> 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
On 19/11/22 05:04, Sebastian Falbesoner wrote: > 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@gmail.com> Fixes: 85236d2be844 ("mmc: sdhci-esdhc-imx: clear the HALT bit when enable CQE") Acked-by: Adrian Hunter <adrian.hunter@intel.com> > --- > 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"); >
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");
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@gmail.com> --- drivers/mmc/host/sdhci-esdhc-imx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)