In case of reboot my olinuxino imx23 board does not see mmc card any more. mmc_rescan is being called by delayed work in loop, but mxs_mmc_get_cd always returns 0, so we will never pass the card detection check and will not do further card inition. This patch is just an attempt to partially revert the patch a91fe279ae of Sascha Hauer, where it is claimed that upper layer will handle broken card detection using the polling logic and MMC_CAP_NEEDS_POLL capability, but seems it is not true, because upper logic still expects 1 from 'get_cd'. So, here we always return 1 (card present) in case of MMC_CAP_NEEDS_POLL capability set. Signed-off-by: Roman Pen <r.peniaev@xxxxxxxxx> CC: Chris Ball <chris@xxxxxxxxxx> CC: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx> CC: Fabio Estevam <fabio.estevam@xxxxxxxxxxxxx> CC: Shawn Guo <shawn.guo@xxxxxxxxxx> CC: Ulf Hansson <ulf.hansson@xxxxxxxxxx> CC: linux-mmc@xxxxxxxxxxxxxxx CC: linux-kernel@xxxxxxxxxxxxxxx --- drivers/mmc/host/mxs-mmc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c index 073e871..9187ce1 100644 --- a/drivers/mmc/host/mxs-mmc.c +++ b/drivers/mmc/host/mxs-mmc.c @@ -82,7 +82,8 @@ static int mxs_mmc_get_cd(struct mmc_host *mmc) if (ret >= 0) return ret; - present = !(readl(ssp->base + HW_SSP_STATUS(ssp)) & + present = mmc->caps & MMC_CAP_NEEDS_POLL || + !(readl(ssp->base + HW_SSP_STATUS(ssp)) & BM_SSP_STATUS_CARD_DETECT); if (mmc->caps2 & MMC_CAP2_CD_ACTIVE_HIGH) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
