mmc: sdhci: Use 'void *' for not 'u8 *' for ADMA data

It is kernel-style to use 'void *' for anonymous data.
This is being applied to the ADMA bounce buffer which
contains unaligned bytes, and to the ADMA descriptor
table which will contain 32-bit ADMA descriptors
or 64-bit ADMA descriptors when support is added.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/sdhci.c

@@ -454,7 +454,7 @@ static void sdhci_kunmap_atomic(void *buffer, unsigned long *flags)
 	local_irq_restore(*flags);
 }
 
-static void sdhci_adma_write_desc(u8 *desc, u32 addr, int len, unsigned cmd)
+static void sdhci_adma_write_desc(void *desc, u32 addr, int len, unsigned cmd)
 {
 	__le32 *dataddr = (__le32 __force *)(desc + 4);
 	__le16 *cmdlen = (__le16 __force *)desc;
@@ -480,8 +480,8 @@ static int sdhci_adma_table_pre(struct sdhci_host *host,
 {
 	int direction;
 
-	u8 *desc;
-	u8 *align;
+	void *desc;
+	void *align;
 	dma_addr_t addr;
 	dma_addr_t align_addr;
 	int len, offset;
@@ -606,7 +606,7 @@ static void sdhci_adma_table_post(struct sdhci_host *host,
 
 	struct scatterlist *sg;
 	int i, size;
-	u8 *align;
+	void *align;
 	char *buffer;
 	unsigned long flags;
 	bool has_unaligned;
@@ -2301,7 +2301,7 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask, u32 *mask)
 static void sdhci_adma_show_error(struct sdhci_host *host)
 {
 	const char *name = mmc_hostname(host->mmc);
-	u8 *desc = host->adma_table;
+	void *desc = host->adma_table;
 	__le32 *dma;
 	__le16 *len;
 	u8 attr;
@@ -2311,7 +2311,7 @@ static void sdhci_adma_show_error(struct sdhci_host *host)
 	while (true) {
 		dma = (__le32 *)(desc + 4);
 		len = (__le16 *)(desc + 2);
-		attr = *desc;
+		attr = *(u8 *)desc;
 
 		DBG("%s: %p: DMA 0x%08x, LEN 0x%04x, Attr=0x%02x\n",
 		    name, desc, le32_to_cpu(*dma), le16_to_cpu(*len), attr);

include/linux/mmc/sdhci.h

@@ -155,8 +155,8 @@ struct sdhci_host {
 
 	int sg_count;		/* Mapped sg entries */
 
-	u8 *adma_table;		/* ADMA descriptor table */
-	u8 *align_buffer;	/* Bounce buffer */
+	void *adma_table;	/* ADMA descriptor table */
+	void *align_buffer;	/* Bounce buffer */
 
 	dma_addr_t adma_addr;	/* Mapped ADMA descr. table */
 	dma_addr_t align_addr;	/* Mapped bounce buffer */