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authorAndrey Smirnov <andrew.smirnov@gmail.com>2017-06-19 07:44:27 -0700
committerSascha Hauer <s.hauer@pengutronix.de>2017-06-20 09:31:41 +0200
commit413eeb365024f44e8bbbb969e66020705729558e (patch)
treef82b01be58edd3f6cd84f9350e223def11c1d08d
parented3fa3819aba1cc806d9329971e179464bbe219f (diff)
downloadbarebox-413eeb365024f44e8bbbb969e66020705729558e.tar.gz
mtd: dataflash: Improve coding style in jedec_probe()
Change the following: - Replace indentation between type and name of local variable from tabs to spaces - Replace magic number 0x1F with CFI_MFR_ATMEL macro - Replace variable 'tmp' with 'ret' and 'i' where appropriate - Reformat multi-line comments and add newlines where appropriate No functional change intended. This is a backport of kernel commit 41c9c6621afa22c86fe74cf07536fd21c7719ca6 Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
-rw-r--r--drivers/mtd/devices/mtd_dataflash.c31
1 files changed, 17 insertions, 14 deletions
diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c
index cdbb194..f47553a 100644
--- a/drivers/mtd/devices/mtd_dataflash.c
+++ b/drivers/mtd/devices/mtd_dataflash.c
@@ -83,6 +83,7 @@
#define OP_WRITE_SECURITY_REVC 0x9A
#define OP_WRITE_SECURITY 0x9B /* revision D */
+#define CFI_MFR_ATMEL 0x1F
struct dataflash {
u8 command[4];
@@ -716,14 +717,15 @@ static struct flash_info dataflash_data [] = {
static struct flash_info * jedec_probe(struct spi_device *spi)
{
- int tmp;
- u8 code = OP_READ_ID;
- u8 id[3];
- u32 jedec;
- struct flash_info *info;
+ int ret, i;
+ u8 code = OP_READ_ID;
+ u8 id[3];
+ u32 jedec;
+ struct flash_info *info;
int status;
- /* JEDEC also defines an optional "extended device information"
+ /*
+ * JEDEC also defines an optional "extended device information"
* string for after vendor-specific data, after the three bytes
* we use here. Supporting some chips might require using it.
*
@@ -731,13 +733,14 @@ static struct flash_info * jedec_probe(struct spi_device *spi)
* That's not an error; only rev C and newer chips handle it, and
* only Atmel sells these chips.
*/
- tmp = spi_write_then_read(spi, &code, 1, id, 3);
- if (tmp < 0) {
+ ret = spi_write_then_read(spi, &code, 1, id, 3);
+ if (ret < 0) {
pr_debug("%s: error %d reading JEDEC ID\n",
- dev_name(&spi->dev), tmp);
- return ERR_PTR(tmp);
+ dev_name(&spi->dev), ret);
+ return ERR_PTR(ret);
}
- if (id[0] != 0x1f)
+
+ if (id[0] != CFI_MFR_ATMEL)
return NULL;
jedec = id[0];
@@ -746,9 +749,9 @@ static struct flash_info * jedec_probe(struct spi_device *spi)
jedec = jedec << 8;
jedec |= id[2];
- for (tmp = 0, info = dataflash_data;
- tmp < ARRAY_SIZE(dataflash_data);
- tmp++, info++) {
+ for (i = 0, info = dataflash_data;
+ i < ARRAY_SIZE(dataflash_data);
+ i++, info++) {
if (info->jedec_id == jedec) {
pr_debug("%s: OTP, sector protect%s\n",
dev_name(&spi->dev),