diff options
Diffstat (limited to 'target/linux/layerscape/patches-4.4/1091-mtd-spi-nor-change-return-value-of-read-write.patch')
| -rw-r--r-- | target/linux/layerscape/patches-4.4/1091-mtd-spi-nor-change-return-value-of-read-write.patch | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-4.4/1091-mtd-spi-nor-change-return-value-of-read-write.patch b/target/linux/layerscape/patches-4.4/1091-mtd-spi-nor-change-return-value-of-read-write.patch new file mode 100644 index 0000000000..faa806e701 --- /dev/null +++ b/target/linux/layerscape/patches-4.4/1091-mtd-spi-nor-change-return-value-of-read-write.patch @@ -0,0 +1,82 @@ +From 0a8079b232e9188ba267e37e20f192bed6c2b29b Mon Sep 17 00:00:00 2001 +From: Michal Suchanek <hramrach@gmail.com> +Date: Wed, 2 Dec 2015 10:38:19 +0000 +Subject: [PATCH 091/113] 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. + +Signed-off-by: Michal Suchanek <hramrach@gmail.com> +Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@freescale.com> +--- + drivers/mtd/devices/m25p80.c | 5 +++-- + drivers/mtd/spi-nor/fsl-quadspi.c | 5 +++-- + include/linux/mtd/spi-nor.h | 4 ++-- + 3 files changed, 8 insertions(+), 6 deletions(-) + +--- a/drivers/mtd/devices/m25p80.c ++++ b/drivers/mtd/devices/m25p80.c +@@ -73,7 +73,7 @@ static int m25p80_write_reg(struct spi_n + 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 + 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_nbi + * 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; +--- a/drivers/mtd/spi-nor/fsl-quadspi.c ++++ b/drivers/mtd/spi-nor/fsl-quadspi.c +@@ -868,7 +868,7 @@ static int fsl_qspi_write_reg(struct spi + return ret; + } + +-static void fsl_qspi_write(struct spi_nor *nor, loff_t to, ++static ssize_t fsl_qspi_write(struct spi_nor *nor, loff_t to, + size_t len, size_t *retlen, const u_char *buf) + { + struct fsl_qspi *q = nor->priv; +@@ -878,9 +878,10 @@ static void fsl_qspi_write(struct spi_no + + /* invalid the data in the AHB buffer. */ + fsl_qspi_invalid(q); ++ return 0; + } + +-static int fsl_qspi_read(struct spi_nor *nor, loff_t from, ++static ssize_t fsl_qspi_read(struct spi_nor *nor, loff_t from, + size_t len, size_t *retlen, u_char *buf) + { + struct fsl_qspi *q = nor->priv; +--- a/include/linux/mtd/spi-nor.h ++++ b/include/linux/mtd/spi-nor.h +@@ -170,9 +170,9 @@ struct spi_nor { + int (*read_reg)(struct spi_nor *nor, u8 opcode, u8 *buf, int len); + int (*write_reg)(struct spi_nor *nor, u8 opcode, u8 *buf, int len); + +- int (*read)(struct spi_nor *nor, loff_t from, ++ ssize_t (*read)(struct spi_nor *nor, loff_t from, + size_t len, size_t *retlen, u_char *read_buf); +- void (*write)(struct spi_nor *nor, loff_t to, ++ ssize_t (*write)(struct spi_nor *nor, loff_t to, + size_t len, size_t *retlen, const u_char *write_buf); + int (*erase)(struct spi_nor *nor, loff_t offs); + |