Merge tag 'mmc-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC updates from Ulf Hansson:
 "MMC core:
   - Fix a few memoryleaks
   - Minor improvements to the card initialization sequence
   - Partially support sleepy GPIO controllers for pwrseq eMMC

  MMC host:
   - alcor: Work with multiple-entry sglists
   - alcor: Enable DMA for writes
   - meson-gx: Improve tuning support
   - meson-gx: Avoid clock glitch when switching to DDR modes
   - meson-gx: Disable unreliable HS400 mode
   - mmci: Minor updates for support of HW busy detection
   - mmci: Support data transfers for the stm32_sdmmc variant
   - mmci: Restructure code to better support different variants
   - mtk-sd: Add support for version found on MT7620 family SOCs
   - mtk-sd: Add support for the MT8516 version
   - mtk-sd: Add Chaotian Jing as the maintainer
   - sdhci: Reorganize request-code to convert from tasklet to workqueue
   - sdhci_am654: Stabilize support for lower speed modes
   - sdhci-esdhc-imx: Add HS400 support for iMX7ULP
   - sdhci-esdhc-imx: Add support for iMX7ULP version
   - sdhci-of-arasan: Allow to disable DCMDs via DT for CQE
   - sdhci-of-esdhc: Add support for the ls1028a version
   - sdhci-of-esdhc: Several fixups for errata
   - sdhci-pci: Fix BYT OCP setting
   - sdhci-pci: Add support for Intel CML
   - sdhci-tegra: Add support for system suspend/resume
   - sdhci-tegra: Add CQE support for Tegra186 WAR
   - sdhci-tegra: Add support for Tegra194
   - sdhci-tegra: Update HW tuning process

  MEMSTICK:
   - I volunteered to help as a maintainer for the memstick subsystem,
     which is reflected by an update to the MAINTAINERS file. Changes
     are funneled through my MMC git and we will use the linux-mmc
     mailing list.

  MEMSTICK host:
   - A few minor cleanups"

* tag 'mmc-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (87 commits)
  mmc: sdhci-pci: Fix BYT OCP setting
  dt-bindings: mmc: add DT bindings for ls1028a eSDHC host controller
  mmc: alcor: Drop pointer to mmc_host from alcor_sdmmc_host
  mmc: mtk-sd: select REGULATOR
  mmc: mtk-sd: enable internal card-detect logic.
  mmc: mtk-sd: add support for config found in mt7620 family SOCs.
  mmc: mtk-sd: don't hard-code interrupt trigger type
  mmc: core: Fix tag set memory leak
  dt-bindings: mmc: Add support for MT8516 to mtk-sd
  mmc: mmci: Prevent polling for busy detection in IRQ context
  mmc: mmci: Cleanup mmci_cmd_irq() for busy detect
  mmc: usdhi6rol0: mark expected switch fall-throughs
  mmc: core: Verify SD bus width
  mmc: sdhci-esdhc-imx: Add HS400 support for iMX7ULP
  mmc: sdhci-esdhc-imx: add pm_qos to interact with cpuidle
  dt-bindings: mmc: fsl-imx-esdhc: add imx7ulp compatible string
  mmc: meson-gx: add signal resampling tuning
  mmc: meson-gx: remove Rx phase tuning
  mmc: meson-gx: avoid clock glitch when switching to DDR modes
  mmc: meson-gx: disable HS400
  ...

1 files changed, 11 insertions, 5 deletions

diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c
index c5208fb312ae..a533cab8fccc 100644
--- a/drivers/mmc/core/mmc_ops.c
+++ b/drivers/mmc/core/mmc_ops.c
@@ -184,11 +184,7 @@ int mmc_send_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
 		if (err)
 			break;
 
-		/* if we're just probing, do a single pass */
-		if (ocr == 0)
-			break;
-
-		/* otherwise wait until reset completes */
+		/* wait until reset completes */
 		if (mmc_host_is_spi(host)) {
 			if (!(cmd.resp[0] & R1_SPI_IDLE))
 				break;
@@ -200,6 +196,16 @@ int mmc_send_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
 		err = -ETIMEDOUT;
 
 		mmc_delay(10);
+
+		/*
+		 * According to eMMC specification v5.1 section 6.4.3, we
+		 * should issue CMD1 repeatedly in the idle state until
+		 * the eMMC is ready. Otherwise some eMMC devices seem to enter
+		 * the inactive mode after mmc_init_card() issued CMD0 when
+		 * the eMMC device is busy.
+		 */
+		if (!ocr && !mmc_host_is_spi(host))
+			cmd.arg = cmd.resp[0] | BIT(30);
 	}
 
 	if (rocr && !mmc_host_is_spi(host))