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Date:   Fri,  8 Feb 2019 17:08:51 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     linux-mtd@...ts.infradead.org,
        Miquel Raynal <miquel.raynal@...tlin.com>
Cc:     Boris Brezillon <bbrezillon@...nel.org>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Brian Norris <computersforpeace@...il.com>,
        linux-kernel@...r.kernel.org, Marek Vasut <marek.vasut@...il.com>,
        Richard Weinberger <richard@....at>,
        David Woodhouse <dwmw2@...radead.org>
Subject: [PATCH 07/11] mtd: rawnand: denali: use bool type instead of int where appropriate

Use 'bool' type for some function arguments.

 - write (write or read?)
 - raw (the raw access mode or not?)

It is true that denali_nand_info::dma_avail is also boolean, but
I am keeping it as 'int' because 'scripts/checkpatch --strict' would
report the following:

CHECK: Avoid using bool structure members because of possible alignment issues
  - see: https://lkml.org/lkml/2017/11/21/384

I do not think it is a matter here, but I am sticking to the suggestion.

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

 drivers/mtd/nand/raw/denali.c | 23 ++++++++++++-----------
 drivers/mtd/nand/raw/denali.h |  2 +-
 2 files changed, 13 insertions(+), 12 deletions(-)

diff --git a/drivers/mtd/nand/raw/denali.c b/drivers/mtd/nand/raw/denali.c
index 514d189..748711e 100644
--- a/drivers/mtd/nand/raw/denali.c
+++ b/drivers/mtd/nand/raw/denali.c
@@ -357,7 +357,7 @@ 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;
@@ -371,7 +371,8 @@ 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));
@@ -381,7 +382,7 @@ 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;
@@ -392,7 +393,7 @@ 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);
@@ -453,7 +454,7 @@ 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);
@@ -462,7 +463,7 @@ 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;
 	u32 irq_mask, irq_stat, ecc_err_mask;
@@ -519,7 +520,7 @@ static int denali_dma_xfer(struct denali_nand_info *denali, void *buf,
 }
 
 static int denali_data_xfer(struct nand_chip *chip, void *buf, size_t size,
-			    int page, int raw, int write)
+			    int page, bool raw, bool write)
 {
 	struct denali_nand_info *denali = to_denali(chip);
 
@@ -644,7 +645,7 @@ static int denali_read_page_raw(struct nand_chip *chip, uint8_t *buf,
 	if (!buf)
 		return -EINVAL;
 
-	ret = denali_data_xfer(chip, tmp_buf, size, page, 1, 0);
+	ret = denali_data_xfer(chip, tmp_buf, size, page, true, false);
 	if (ret)
 		return ret;
 
@@ -700,7 +701,7 @@ static int denali_write_page_raw(struct nand_chip *chip, const uint8_t *buf,
 			return ret;
 	}
 
-	return denali_data_xfer(chip, tmp_buf, size, page, 1, 1);
+	return denali_data_xfer(chip, tmp_buf, size, page, true, true);
 }
 
 static int denali_change_read_column_op(void *buf, unsigned int offset,
@@ -752,7 +753,7 @@ static int denali_read_page(struct nand_chip *chip, uint8_t *buf,
 	int stat = 0;
 	int ret;
 
-	ret = denali_data_xfer(chip, buf, mtd->writesize, page, 0, 0);
+	ret = denali_data_xfer(chip, buf, mtd->writesize, page, false, false);
 	if (ret && ret != -EBADMSG)
 		return ret;
 
@@ -782,7 +783,7 @@ static int denali_write_page(struct nand_chip *chip, const uint8_t *buf,
 	struct mtd_info *mtd = nand_to_mtd(chip);
 
 	return denali_data_xfer(chip, (void *)buf, mtd->writesize, page,
-				0, 1);
+				false, true);
 }
 
 static int denali_setup_data_interface(struct nand_chip *chip, int chipnr,
diff --git a/drivers/mtd/nand/raw/denali.h b/drivers/mtd/nand/raw/denali.h
index 46296f2..8e91438 100644
--- a/drivers/mtd/nand/raw/denali.h
+++ b/drivers/mtd/nand/raw/denali.h
@@ -314,7 +314,7 @@ 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

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