From 59451e1233bd315c5379a631838a03d80e689581 Mon Sep 17 00:00:00 2001 From: Michal Suchanek Date: Thu, 5 May 2016 17:31:47 -0700 Subject: mtd: spi-nor: change return value of read/write Change the return value of spi-nor device read and write methods to allow returning amount of data transferred and errors as read(2)/write(2) does. Also, start handling positive returns in spi_nor_read(), since we want to convert drivers to start returning the read-length both via *retlen and the return code. (We don't need to do the same transition process for spi_nor_write(), since ->write() didn't used to have a return code at all.) Signed-off-by: Michal Suchanek Signed-off-by: Brian Norris Tested-by Cyrille Pitchen Acked-by: Michal Suchanek Tested-by: Michal Suchanek --- drivers/mtd/devices/m25p80.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers/mtd/devices/m25p80.c') diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index 9d6854467651..3bd75e87ed89 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -73,7 +73,7 @@ static int m25p80_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len) return spi_write(spi, flash->command, len + 1); } -static void m25p80_write(struct spi_nor *nor, loff_t to, size_t len, +static ssize_t m25p80_write(struct spi_nor *nor, loff_t to, size_t len, size_t *retlen, const u_char *buf) { struct m25p *flash = nor->priv; @@ -101,6 +101,7 @@ static void m25p80_write(struct spi_nor *nor, loff_t to, size_t len, spi_sync(spi, &m); *retlen += m.actual_length - cmd_sz; + return 0; } static inline unsigned int m25p80_rx_nbits(struct spi_nor *nor) @@ -119,7 +120,7 @@ static inline unsigned int m25p80_rx_nbits(struct spi_nor *nor) * Read an address range from the nor chip. The address range * may be any size provided it is within the physical boundaries. */ -static int m25p80_read(struct spi_nor *nor, loff_t from, size_t len, +static ssize_t m25p80_read(struct spi_nor *nor, loff_t from, size_t len, size_t *retlen, u_char *buf) { struct m25p *flash = nor->priv; -- cgit v1.2.1