diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index 3b4928f5b9b2..8f4df250a77a 100644
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -2610,6 +2610,8 @@ static void atmci_remove(struct platform_device *pdev)
 
 	free_irq(platform_get_irq(pdev, 0), host);
 
+	cancel_work_sync(&host->bh_work);
+
 	clk_disable_unprepare(host->mck);
 
 	pm_runtime_disable(dev);
diff --git a/drivers/mmc/host/loongson2-mmc.c b/drivers/mmc/host/loongson2-mmc.c
index f553e92fd9e5..118eccbaf8cd 100644
--- a/drivers/mmc/host/loongson2-mmc.c
+++ b/drivers/mmc/host/loongson2-mmc.c
@@ -641,8 +641,8 @@ static void ls2k0500_mmc_reorder_cmd_data(struct loongson2_mmc_host *host,
 		return;
 
 	for_each_sg(cmd->data->sg, sg, cmd->data->sg_len, i) {
-		data = sg_virt(&sg[i]);
-		for (j = 0; j < (sg_dma_len(&sg[i]) / 4); j++)
+		data = sg_virt(sg);
+		for (j = 0; j < (sg_dma_len(sg) / 4); j++)
 			if (cmd->opcode == SD_SWITCH)
 				data[j] = bitrev8x4(data[j]);
 			else
@@ -758,8 +758,8 @@ static void ls2k2000_mmc_reorder_cmd_data(struct loongson2_mmc_host *host,
 		return;
 
 	for_each_sg(cmd->data->sg, sg, cmd->data->sg_len, i) {
-		data = sg_virt(&sg[i]);
-		for (j = 0; j < (sg_dma_len(&sg[i]) / 4); j++)
+		data = sg_virt(sg);
+		for (j = 0; j < (sg_dma_len(sg) / 4); j++)
 			data[j] = bitrev8x4(data[j]);
 	}
 }
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 58c881f2725b..3356ac5a1fa0 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -1357,7 +1357,7 @@ omap_hsmmc_prepare_data(struct omap_hsmmc_host *host, struct mmc_request *req)
 	if (req->data == NULL) {
 		OMAP_HSMMC_WRITE(host->base, BLK, 0);
 		if (req->cmd->flags & MMC_RSP_BUSY) {
-			timeout = req->cmd->busy_timeout * NSEC_PER_MSEC;
+			timeout = (u64)req->cmd->busy_timeout * NSEC_PER_MSEC;
 
 			/*
 			 * Set an arbitrary 100ms data timeout for commands with
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index e3bf901b10aa..efb4c7742fe2 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -4187,6 +4187,14 @@ void __sdhci_read_caps(struct sdhci_host *host, const u16 *ver,
 }
 EXPORT_SYMBOL_GPL(__sdhci_read_caps);
 
+static void sdhci_unmap_bounce_buffer(void *data)
+{
+	struct sdhci_host *host = data;
+
+	dma_unmap_single(mmc_dev(host->mmc), host->bounce_addr,
+			 host->bounce_buffer_size, DMA_BIDIRECTIONAL);
+}
+
 static void sdhci_allocate_bounce_buffer(struct sdhci_host *host)
 {
 	struct mmc_host *mmc = host->mmc;
@@ -4247,6 +4255,14 @@ static void sdhci_allocate_bounce_buffer(struct sdhci_host *host)
 	}
 
 	host->bounce_buffer_size = bounce_size;
+	ret = devm_add_action_or_reset(mmc_dev(mmc),
+				       sdhci_unmap_bounce_buffer, host);
+	if (ret) {
+		devm_kfree(mmc_dev(mmc), host->bounce_buffer);
+		host->bounce_buffer = NULL;
+		host->bounce_buffer_size = 0;
+		return;
+	}
 
 out:
 	/* Lie about this since we're bouncing */
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index b6a571d866fa..f0fd81409a86 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -659,7 +659,7 @@ struct sdhci_host {
 
 	unsigned int		tuning_count;	/* Timer count for re-tuning */
 	unsigned int		tuning_mode;	/* Re-tuning mode supported by host */
-	unsigned int		tuning_err;	/* Error code for re-tuning */
+	int			tuning_err;	/* Error code for re-tuning */
 #define SDHCI_TUNING_MODE_1	0
 #define SDHCI_TUNING_MODE_2	1
 #define SDHCI_TUNING_MODE_3	2