[PATCH v4 5/9] mtd: rawnand: denali: use bool type instead of int where appropriate

[Masahiro Yamada]

Use 'bool' type for the following boolean parameters.

 - write (write or read?)
 - dma_avail (DMA engine available or not?)

Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
---

Changes in v4: None
Changes in v3: None
Changes in v2:
  - Use bool for dma_avail as well

 drivers/mtd/nand/raw/denali.c | 23 ++++++++++++-----------
 drivers/mtd/nand/raw/denali.h |  4 ++--
 2 files changed, 14 insertions(+), 13 deletions(-)

diff --git a/drivers/mtd/nand/raw/denali.c b/drivers/mtd/nand/raw/denali.c
index eaf4a36..7c106c1 100644
--- a/drivers/mtd/nand/raw/denali.c
+++ b/drivers/mtd/nand/raw/denali.c
@@ -533,7 +533,7 @@ static int denali_sw_ecc_fixup(struct nand_chip *chip,
 }
 
 static void denali_setup_dma64(struct denali_nand_info *denali,
-			       dma_addr_t dma_addr, int page, int write)
+			       dma_addr_t dma_addr, int page, bool write)
 {
 	uint32_t mode;
 	const int page_count = 1;
@@ -547,7 +547,8 @@ static void denali_setup_dma64(struct denali_nand_info *denali,
 	 *    burst len = 64 bytes, the number of pages
 	 */
 	denali->host_write(denali, mode,
-			   0x01002000 | (64 << 16) | (write << 8) | page_count);
+			   0x01002000 | (64 << 16) |
+			   (write ? BIT(8) : 0) | page_count);
 
 	/* 2. set memory low address */
 	denali->host_write(denali, mode, lower_32_bits(dma_addr));
@@ -557,7 +558,7 @@ static void denali_setup_dma64(struct denali_nand_info *denali,
 }
 
 static void denali_setup_dma32(struct denali_nand_info *denali,
-			       dma_addr_t dma_addr, int page, int write)
+			       dma_addr_t dma_addr, int page, bool write)
 {
 	uint32_t mode;
 	const int page_count = 1;
@@ -568,7 +569,7 @@ static void denali_setup_dma32(struct denali_nand_info *denali,
 
 	/* 1. setup transfer type and # of pages */
 	denali->host_write(denali, mode | page,
-			   0x2000 | (write << 8) | page_count);
+			   0x2000 | (write ? BIT(8) : 0) | page_count);
 
 	/* 2. set memory high address bits 23:8 */
 	denali->host_write(denali, mode | ((dma_addr >> 16) << 8), 0x2200);
@@ -628,7 +629,7 @@ static int denali_pio_write(struct denali_nand_info *denali, const u32 *buf,
 }
 
 static int denali_pio_xfer(struct denali_nand_info *denali, void *buf,
-			   size_t size, int page, int write)
+			   size_t size, int page, bool write)
 {
 	if (write)
 		return denali_pio_write(denali, buf, size, page);
@@ -637,7 +638,7 @@ static int denali_pio_xfer(struct denali_nand_info *denali, void *buf,
 }
 
 static int denali_dma_xfer(struct denali_nand_info *denali, void *buf,
-			   size_t size, int page, int write)
+			   size_t size, int page, bool write)
 {
 	dma_addr_t dma_addr;
 	uint32_t irq_mask, irq_status, ecc_err_mask;
@@ -694,7 +695,7 @@ static int denali_dma_xfer(struct denali_nand_info *denali, void *buf,
 }
 
 static int denali_page_xfer(struct nand_chip *chip, void *buf, size_t size,
-			    int page, int write)
+			    int page, bool write)
 {
 	struct denali_nand_info *denali = to_denali(chip);
 
@@ -715,7 +716,7 @@ static int denali_read_page(struct nand_chip *chip, uint8_t *buf,
 	int stat = 0;
 	int ret;
 
-	ret = denali_page_xfer(chip, buf, mtd->writesize, page, 0);
+	ret = denali_page_xfer(chip, buf, mtd->writesize, page, false);
 	if (ret && ret != -EBADMSG)
 		return ret;
 
@@ -744,7 +745,7 @@ static int denali_write_page(struct nand_chip *chip, const uint8_t *buf,
 {
 	struct mtd_info *mtd = nand_to_mtd(chip);
 
-	return denali_page_xfer(chip, (void *)buf, mtd->writesize, page, 1);
+	return denali_page_xfer(chip, (void *)buf, mtd->writesize, page, true);
 }
 
 static int denali_setup_data_interface(struct nand_chip *chip, int chipnr,
@@ -1001,7 +1002,7 @@ static int denali_attach_chip(struct nand_chip *chip)
 	int ret;
 
 	if (ioread32(denali->reg + FEATURES) & FEATURES__DMA)
-		denali->dma_avail = 1;
+		denali->dma_avail = true;
 
 	if (denali->dma_avail) {
 		int dma_bit = denali->caps & DENALI_CAP_DMA_64BIT ? 64 : 32;
@@ -1010,7 +1011,7 @@ static int denali_attach_chip(struct nand_chip *chip)
 		if (ret) {
 			dev_info(denali->dev,
 				 "Failed to set DMA mask. Disabling DMA.\n");
-			denali->dma_avail = 0;
+			denali->dma_avail = false;
 		}
 	}
 
diff --git a/drivers/mtd/nand/raw/denali.h b/drivers/mtd/nand/raw/denali.h
index 4447184..d2603c6 100644
--- a/drivers/mtd/nand/raw/denali.h
+++ b/drivers/mtd/nand/raw/denali.h
@@ -303,7 +303,7 @@ struct denali_nand_info {
 	u32 irq_mask;			/* interrupts we are waiting for */
 	u32 irq_status;			/* interrupts that have happened */
 	int irq;
-	int dma_avail;			/* can support DMA? */
+	bool dma_avail;			/* can support DMA? */
 	int devs_per_cs;		/* devices connected in parallel */
 	int oob_skip_bytes;		/* number of bytes reserved for BBM */
 	int max_banks;
@@ -313,7 +313,7 @@ struct denali_nand_info {
 	u32 (*host_read)(struct denali_nand_info *denali, u32 addr);
 	void (*host_write)(struct denali_nand_info *denali, u32 addr, u32 data);
 	void (*setup_dma)(struct denali_nand_info *denali, dma_addr_t dma_addr,
-			  int page, int write);
+			  int page, bool write);
 };
 
 #define DENALI_CAP_HW_ECC_FIXUP			BIT(0)
-- 
2.7.4