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;
         }