From: Veerabhadrarao Badiganti vbadigan@codeaurora.org
commit 9d8cb58691f85cef687512262acb2c7109ee4868 upstream.
MSM sd host controller is capable of HW busy detection of device busy signaling over DAT0 line. And it requires the R1B response for commands that have this response associated with them.
So set the below two host capabilities for qcom SDHC. - MMC_CAP_WAIT_WHILE_BUSY - MMC_CAP_NEED_RSP_BUSY
Recent development of the mmc core in regards to this, revealed this as being a potential bug, hence the stable tag.
Cc: stable@vger.kernel.org # v4.19+ Signed-off-by: Veerabhadrarao Badiganti vbadigan@codeaurora.org Acked-by: Adrian Hunter adrian.hunter@intel.com Link: https://lore.kernel.org/r/1587363626-20413-2-git-send-email-vbadigan@codeaur... Signed-off-by: Ulf Hansson ulf.hansson@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/mmc/host/sdhci-msm.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/mmc/host/sdhci-msm.c +++ b/drivers/mmc/host/sdhci-msm.c @@ -1944,6 +1944,8 @@ static int sdhci_msm_probe(struct platfo goto clk_disable; }
+ msm_host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY | MMC_CAP_NEED_RSP_BUSY; + pm_runtime_get_noresume(&pdev->dev); pm_runtime_set_active(&pdev->dev); pm_runtime_enable(&pdev->dev);