mmc: sdhci-pxav3: set NEED_RSP_BUSY capability

Set the MMC_CAP_NEED_RSP_BUSY capability for the sdhci-pxav3 host to
prevent conversion of R1B responses to R1. Without this, the eMMC card
in the samsung,coreprimevelte smartphone using the Marvell PXA1908 SoC
with this mmc host doesn't probe with the ETIMEDOUT error originating in
__mmc_poll_for_busy.

Note that the other issues reported for this phone and host, namely
floods of "Tuning failed, falling back to fixed sampling clock" dmesg
messages for the eMMC and unstable SDIO are not mitigated by this
change.

Link: https://lore.kernel.org/r/20200310153340.5593-1-ulf.hansson@linaro.org/
Link: https://lore.kernel.org/r/D7204PWIGQGI.1FRFQPPIEE2P9@matfyz.cz/
Link: https://lore.kernel.org/r/20250115-pxa1908-lkml-v14-0-847d24f3665a@skole.hr/
Cc: stable@vger.kernel.org
Signed-off-by: Karel Balej <balejk@matfyz.cz>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Duje Mihanović <duje.mihanovic@skole.hr>
Link: https://lore.kernel.org/r/20250310140707.23459-1-balejk@matfyz.cz
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c
index 990723a008aec52df0ae2330a445583b69f8bda3..3fb56face3d81259b693c8569682d05c95be2880 100644 (file)
--- a/drivers/mmc/host/sdhci-pxav3.c
+++ b/drivers/mmc/host/sdhci-pxav3.c
@@ -399,6 +399,7 @@ static int sdhci_pxav3_probe(struct platform_device *pdev)
        if (!IS_ERR(pxa->clk_core))
                clk_prepare_enable(pxa->clk_core);
 
+       host->mmc->caps |= MMC_CAP_NEED_RSP_BUSY;
        /* enable 1/8V DDR capable */
        host->mmc->caps |= MMC_CAP_1_8V_DDR;