6 files changed, 44 insertions, 7 deletions

diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
index 20135a5de748..2cfb963d9f37 100644
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -72,6 +72,7 @@ MODULE_ALIAS("mmc:block");
 #define MMC_BLK_TIMEOUT_MS  (10 * 1000)
 #define MMC_SANITIZE_REQ_TIMEOUT 240000
 #define MMC_EXTRACT_INDEX_FROM_ARG(x) ((x & 0x00FF0000) >> 16)
+#define MMC_EXTRACT_VALUE_FROM_ARG(x) ((x & 0x0000FF00) >> 8)
 
 #define mmc_req_rel_wr(req)	((req->cmd_flags & REQ_FUA) && \
 				  (rq_data_dir(req) == WRITE))
@@ -587,6 +588,24 @@ static int __mmc_blk_ioctl_cmd(struct mmc_card *card, struct mmc_blk_data *md,
 	}
 
 	/*
+	 * Make sure the cache of the PARTITION_CONFIG register and
+	 * PARTITION_ACCESS bits is updated in case the ioctl ext_csd write
+	 * changed it successfully.
+	 */
+	if ((MMC_EXTRACT_INDEX_FROM_ARG(cmd.arg) == EXT_CSD_PART_CONFIG) &&
+	    (cmd.opcode == MMC_SWITCH)) {
+		struct mmc_blk_data *main_md = dev_get_drvdata(&card->dev);
+		u8 value = MMC_EXTRACT_VALUE_FROM_ARG(cmd.arg);
+
+		/*
+		 * Update cache so the next mmc_blk_part_switch call operates
+		 * on up-to-date data.
+		 */
+		card->ext_csd.part_config = value;
+		main_md->part_curr = value & EXT_CSD_PART_CONFIG_ACC_MASK;
+	}
+
+	/*
 	 * According to the SD specs, some commands require a delay after
 	 * issuing the command.
 	 */
diff --git a/drivers/mmc/core/card.h b/drivers/mmc/core/card.h
index 79a5b985ccf5..9c821eedd156 100644
--- a/drivers/mmc/core/card.h
+++ b/drivers/mmc/core/card.h
@@ -82,6 +82,7 @@ struct mmc_fixup {
 #define CID_MANFID_APACER       0x27
 #define CID_MANFID_KINGSTON     0x70
 #define CID_MANFID_HYNIX	0x90
+#define CID_MANFID_NUMONYX	0xFE
 
 #define END_FIXUP { NULL }
 
diff --git a/drivers/mmc/core/quirks.h b/drivers/mmc/core/quirks.h
index 75d317623852..5153577754f0 100644
--- a/drivers/mmc/core/quirks.h
+++ b/drivers/mmc/core/quirks.h
@@ -109,6 +109,12 @@ static const struct mmc_fixup mmc_ext_csd_fixups[] = {
 	 */
 	MMC_FIXUP_EXT_CSD_REV(CID_NAME_ANY, CID_MANFID_HYNIX,
 			      0x014a, add_quirk, MMC_QUIRK_BROKEN_HPI, 5),
+	/*
+	 * Certain Micron (Numonyx) eMMC 4.5 cards might get broken when HPI
+	 * feature is used so disable the HPI feature for such buggy cards.
+	 */
+	MMC_FIXUP_EXT_CSD_REV(CID_NAME_ANY, CID_MANFID_NUMONYX,
+			      0x014e, add_quirk, MMC_QUIRK_BROKEN_HPI, 6),
 
 	END_FIXUP
 };
diff --git a/drivers/mmc/host/dw_mmc-exynos.c b/drivers/mmc/host/dw_mmc-exynos.c
index fa41d9422d57..a84aa3f1ae85 100644
--- a/drivers/mmc/host/dw_mmc-exynos.c
+++ b/drivers/mmc/host/dw_mmc-exynos.c
@@ -165,9 +165,15 @@ static void dw_mci_exynos_set_clksel_timing(struct dw_mci *host, u32 timing)
 static int dw_mci_exynos_runtime_resume(struct device *dev)
 {
 	struct dw_mci *host = dev_get_drvdata(dev);
+	int ret;
+
+	ret = dw_mci_runtime_resume(dev);
+	if (ret)
+		return ret;
 
 	dw_mci_exynos_config_smu(host);
-	return dw_mci_runtime_resume(dev);
+
+	return ret;
 }
 
 /**
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index d9b4acefed31..06d47414d0c1 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -413,7 +413,9 @@ static inline void dw_mci_set_cto(struct dw_mci *host)
 	cto_div = (mci_readl(host, CLKDIV) & 0xff) * 2;
 	if (cto_div == 0)
 		cto_div = 1;
-	cto_ms = DIV_ROUND_UP(MSEC_PER_SEC * cto_clks * cto_div, host->bus_hz);
+
+	cto_ms = DIV_ROUND_UP_ULL((u64)MSEC_PER_SEC * cto_clks * cto_div,
+				  host->bus_hz);
 
 	/* add a bit spare time */
 	cto_ms += 10;
@@ -562,6 +564,7 @@ static int dw_mci_idmac_init(struct dw_mci *host)
 					(sizeof(struct idmac_desc_64addr) *
 							(i + 1))) >> 32;
 			/* Initialize reserved and buffer size fields to "0" */
+			p->des0 = 0;
 			p->des1 = 0;
 			p->des2 = 0;
 			p->des3 = 0;
@@ -584,6 +587,7 @@ static int dw_mci_idmac_init(struct dw_mci *host)
 		     i++, p++) {
 			p->des3 = cpu_to_le32(host->sg_dma +
 					(sizeof(struct idmac_desc) * (i + 1)));
+			p->des0 = 0;
 			p->des1 = 0;
 		}
 
@@ -1799,8 +1803,8 @@ static bool dw_mci_reset(struct dw_mci *host)
 	}
 
 	if (host->use_dma == TRANS_MODE_IDMAC)
-		/* It is also recommended that we reset and reprogram idmac */
-		dw_mci_idmac_reset(host);
+		/* It is also required that we reinit idmac */
+		dw_mci_idmac_init(host);
 
 	ret = true;
 
@@ -1948,8 +1952,9 @@ static void dw_mci_set_drto(struct dw_mci *host)
 	drto_div = (mci_readl(host, CLKDIV) & 0xff) * 2;
 	if (drto_div == 0)
 		drto_div = 1;
-	drto_ms = DIV_ROUND_UP(MSEC_PER_SEC * drto_clks * drto_div,
-			       host->bus_hz);
+
+	drto_ms = DIV_ROUND_UP_ULL((u64)MSEC_PER_SEC * drto_clks * drto_div,
+				   host->bus_hz);
 
 	/* add a bit spare time */
 	drto_ms += 10;
diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c
index 4065da58789d..32321bd596d8 100644
--- a/drivers/mmc/host/sdhci-acpi.c
+++ b/drivers/mmc/host/sdhci-acpi.c
@@ -680,7 +680,7 @@ static int sdhci_acpi_probe(struct platform_device *pdev)
 	host->hw_name	= "ACPI";
 	host->ops	= &sdhci_acpi_ops_dflt;
 	host->irq	= platform_get_irq(pdev, 0);
-	if (host->irq <= 0) {
+	if (host->irq < 0) {
 		err = -EINVAL;
 		goto err_free;
 	}