[PATCH v2 2/5] mci: introduce new dedicated enum mmc_bus_width type

[Ahmad Fatoum <a.fatoum@pengutronix.de>]

To make it clearer that a bus width of 8 is not equal to integer 8,
let's give it a dedicated type. No functional change.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
v1 -> v2:
  - new patch
---
 drivers/mci/mci-core.c |  6 +++---
 include/mci.h          | 20 ++++++++++----------
 2 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/drivers/mci/mci-core.c b/drivers/mci/mci-core.c
index f647cae8203b..2abed0011722 100644
--- a/drivers/mci/mci-core.c
+++ b/drivers/mci/mci-core.c
@@ -864,7 +864,7 @@ static void mci_set_clock(struct mci *mci, unsigned clock)
  * @param mci MCI instance
  * @param width New interface bit width (1, 4 or 8)
  */
-static void mci_set_bus_width(struct mci *mci, unsigned width)
+static void mci_set_bus_width(struct mci *mci, enum mci_bus_width width)
 {
 	struct mci_host *host = mci->host;
 
@@ -1055,7 +1055,7 @@ static void mci_extract_card_dsr_imp_from_csd(struct mci *mci)
 	mci->dsr_imp = UNSTUFF_BITS(mci->csd, 76, 1);
 }
 
-static int mmc_compare_ext_csds(struct mci *mci, unsigned bus_width)
+static int mmc_compare_ext_csds(struct mci *mci, enum mci_bus_width bus_width)
 {
 	u8 *bw_ext_csd;
 	int err;
@@ -1176,7 +1176,7 @@ static int mci_startup_mmc(struct mci *mci)
 		EXT_CSD_BUS_WIDTH_4,
 		EXT_CSD_BUS_WIDTH_8,
 	};
-	static unsigned bus_widths[] = {
+	static enum mci_bus_width bus_widths[] = {
 		MMC_BUS_WIDTH_4,
 		MMC_BUS_WIDTH_8,
 	};
diff --git a/include/mci.h b/include/mci.h
index c38567303241..a3f6d619b361 100644
--- a/include/mci.h
+++ b/include/mci.h
@@ -410,16 +410,16 @@ enum mci_timing {
 	MMC_TIMING_MMC_HS400	= 8,
 };
 
-struct mci_ios {
-	unsigned int	clock;			/* clock rate */
-
-	unsigned char	bus_width;		/* data bus width */
-
-#define MMC_BUS_WIDTH_1		0
-#define MMC_BUS_WIDTH_4		2
-#define MMC_BUS_WIDTH_8		3
+enum mci_bus_width {
+	MMC_BUS_WIDTH_1		= 0,
+	MMC_BUS_WIDTH_4		= 2,
+	MMC_BUS_WIDTH_8		= 3,
+};
 
-	enum mci_timing	timing;			/* timing specification used */
+struct mci_ios {
+	unsigned int		clock;			/* clock rate */
+	enum mci_bus_width	bus_width;		/* data bus width */
+	enum mci_timing		timing;			/* timing specification used */
 };
 
 struct mci;
@@ -434,7 +434,7 @@ struct mci_host {
 	unsigned f_min;		/**< host interface lower limit */
 	unsigned f_max;		/**< host interface upper limit */
 	unsigned clock;		/**< Current clock used to talk to the card */
-	unsigned bus_width;	/**< used data bus width to the card */
+	enum mci_bus_width bus_width;	/**< used data bus width to the card */
 	enum mci_timing timing;	/**< used timing specification to the card */
 	unsigned max_req_size;
 	unsigned dsr_val;	/**< optional dsr value */
-- 
2.39.2