diff options
author | Michal Suchanek <hramrach@gmail.com> | 2016-05-05 17:31:53 -0700 |
---|---|---|
committer | Brian Norris <computersforpeace@gmail.com> | 2016-06-01 17:22:52 -0700 |
commit | 2dd087b16946cf168f401526adf26afa771bb740 (patch) | |
tree | 452867f0d3e8030e92b057ce130f0633f12eb20c /drivers | |
parent | 0bad7b9304d543dd7627f4cd564aea5d7338b950 (diff) | |
download | linux-stable-2dd087b16946cf168f401526adf26afa771bb740.tar.gz linux-stable-2dd087b16946cf168f401526adf26afa771bb740.tar.bz2 linux-stable-2dd087b16946cf168f401526adf26afa771bb740.zip |
mtd: spi-nor: stop passing around retlen
Do not pass retlen to hardware driver read/write functions. Update it in
spi-nor generic driver instead.
Signed-off-by: Michal Suchanek <hramrach@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Tested-by Cyrille Pitchen <cyrille.pitchen@atmel.com>
Acked-by: Michal Suchanek <hramrach@gmail.com>
Tested-by: Michal Suchanek <hramrach@gmail.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/mtd/devices/m25p80.c | 7 | ||||
-rw-r--r-- | drivers/mtd/spi-nor/fsl-quadspi.c | 17 | ||||
-rw-r--r-- | drivers/mtd/spi-nor/mtk-quadspi.c | 8 | ||||
-rw-r--r-- | drivers/mtd/spi-nor/nxp-spifi.c | 6 | ||||
-rw-r--r-- | drivers/mtd/spi-nor/spi-nor.c | 21 |
5 files changed, 26 insertions, 33 deletions
diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index 2ef5a6015276..eab46d211ae6 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -74,7 +74,7 @@ static int m25p80_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len) } static ssize_t m25p80_write(struct spi_nor *nor, loff_t to, size_t len, - size_t *retlen, const u_char *buf) + const u_char *buf) { struct m25p *flash = nor->priv; struct spi_device *spi = flash->spi; @@ -106,7 +106,6 @@ static ssize_t m25p80_write(struct spi_nor *nor, loff_t to, size_t len, ret = m.actual_length - cmd_sz; if (ret < 0) return -EIO; - *retlen += ret; return ret; } @@ -127,7 +126,7 @@ static inline unsigned int m25p80_rx_nbits(struct spi_nor *nor) * may be any size provided it is within the physical boundaries. */ static ssize_t m25p80_read(struct spi_nor *nor, loff_t from, size_t len, - size_t *retlen, u_char *buf) + u_char *buf) { struct m25p *flash = nor->priv; struct spi_device *spi = flash->spi; @@ -156,7 +155,6 @@ static ssize_t m25p80_read(struct spi_nor *nor, loff_t from, size_t len, msg.data_nbits = m25p80_rx_nbits(nor); ret = spi_flash_read(spi, &msg); - *retlen = msg.retlen; if (ret < 0) return ret; return msg.retlen; @@ -184,7 +182,6 @@ static ssize_t m25p80_read(struct spi_nor *nor, loff_t from, size_t len, ret = m.actual_length - m25p_cmdsz(nor) - dummy; if (ret < 0) return -EIO; - *retlen += ret; return ret; } diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c b/drivers/mtd/spi-nor/fsl-quadspi.c index ea296769f015..5c82e4ef1904 100644 --- a/drivers/mtd/spi-nor/fsl-quadspi.c +++ b/drivers/mtd/spi-nor/fsl-quadspi.c @@ -620,7 +620,7 @@ static inline void fsl_qspi_invalid(struct fsl_qspi *q) static ssize_t fsl_qspi_nor_write(struct fsl_qspi *q, struct spi_nor *nor, u8 opcode, unsigned int to, u32 *txbuf, - unsigned count, size_t *retlen) + unsigned count) { int ret, i, j; u32 tmp; @@ -647,11 +647,8 @@ static ssize_t fsl_qspi_nor_write(struct fsl_qspi *q, struct spi_nor *nor, /* Trigger it */ ret = fsl_qspi_runcmd(q, opcode, to, count); - if (ret == 0) { - if (retlen) - *retlen += count; + if (ret == 0) return count; - } return ret; } @@ -862,7 +859,7 @@ static int fsl_qspi_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len) } else if (len > 0) { ret = fsl_qspi_nor_write(q, nor, opcode, 0, - (u32 *)buf, len, NULL); + (u32 *)buf, len); if (ret > 0) return 0; } else { @@ -874,12 +871,11 @@ static int fsl_qspi_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len) } static ssize_t fsl_qspi_write(struct spi_nor *nor, loff_t to, - size_t len, size_t *retlen, const u_char *buf) + size_t len, const u_char *buf) { struct fsl_qspi *q = nor->priv; - ssize_t ret = fsl_qspi_nor_write(q, nor, nor->program_opcode, to, - (u32 *)buf, len, retlen); + (u32 *)buf, len); /* invalid the data in the AHB buffer. */ fsl_qspi_invalid(q); @@ -887,7 +883,7 @@ static ssize_t fsl_qspi_write(struct spi_nor *nor, loff_t to, } static ssize_t fsl_qspi_read(struct spi_nor *nor, loff_t from, - size_t len, size_t *retlen, u_char *buf) + size_t len, u_char *buf) { struct fsl_qspi *q = nor->priv; u8 cmd = nor->read_opcode; @@ -929,7 +925,6 @@ static ssize_t fsl_qspi_read(struct spi_nor *nor, loff_t from, memcpy(buf, q->ahb_addr + q->chip_base_addr + from - q->memmap_offs, len); - *retlen += len; return len; } diff --git a/drivers/mtd/spi-nor/mtk-quadspi.c b/drivers/mtd/spi-nor/mtk-quadspi.c index e85687126c25..21c31b373cd3 100644 --- a/drivers/mtd/spi-nor/mtk-quadspi.c +++ b/drivers/mtd/spi-nor/mtk-quadspi.c @@ -244,7 +244,7 @@ static void mt8173_nor_set_addr(struct mt8173_nor *mt8173_nor, u32 addr) } static ssize_t mt8173_nor_read(struct spi_nor *nor, loff_t from, size_t length, - size_t *retlen, u_char *buffer) + u_char *buffer) { int i, ret; int addr = (int)from; @@ -255,7 +255,7 @@ static ssize_t mt8173_nor_read(struct spi_nor *nor, loff_t from, size_t length, mt8173_nor_set_read_mode(mt8173_nor); mt8173_nor_set_addr(mt8173_nor, addr); - for (i = 0; i < length; i++, (*retlen)++) { + for (i = 0; i < length; i++) { ret = mt8173_nor_execute_cmd(mt8173_nor, MTK_NOR_PIO_READ_CMD); if (ret < 0) return ret; @@ -298,7 +298,7 @@ static int mt8173_nor_write_buffer(struct mt8173_nor *mt8173_nor, int addr, } static ssize_t mt8173_nor_write(struct spi_nor *nor, loff_t to, size_t len, - size_t *retlen, const u_char *buf) + const u_char *buf) { int ret; struct mt8173_nor *mt8173_nor = nor->priv; @@ -318,7 +318,6 @@ static ssize_t mt8173_nor_write(struct spi_nor *nor, loff_t to, size_t len, } to += SFLASH_WRBUF_SIZE; buf += SFLASH_WRBUF_SIZE; - (*retlen) += SFLASH_WRBUF_SIZE; } ret = mt8173_nor_write_buffer_disable(mt8173_nor); if (ret < 0) { @@ -333,7 +332,6 @@ static ssize_t mt8173_nor_write(struct spi_nor *nor, loff_t to, size_t len, dev_err(mt8173_nor->dev, "write single byte failed!\n"); return ret; } - (*retlen) += len; } return len; diff --git a/drivers/mtd/spi-nor/nxp-spifi.c b/drivers/mtd/spi-nor/nxp-spifi.c index b0fb86996b8f..73a14f40928b 100644 --- a/drivers/mtd/spi-nor/nxp-spifi.c +++ b/drivers/mtd/spi-nor/nxp-spifi.c @@ -173,7 +173,7 @@ static int nxp_spifi_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len) } static ssize_t nxp_spifi_read(struct spi_nor *nor, loff_t from, size_t len, - size_t *retlen, u_char *buf) + u_char *buf) { struct nxp_spifi *spifi = nor->priv; int ret; @@ -183,13 +183,12 @@ static ssize_t nxp_spifi_read(struct spi_nor *nor, loff_t from, size_t len, return ret; memcpy_fromio(buf, spifi->flash_base + from, len); - *retlen += len; return len; } static ssize_t nxp_spifi_write(struct spi_nor *nor, loff_t to, size_t len, - size_t *retlen, const u_char *buf) + const u_char *buf) { struct nxp_spifi *spifi = nor->priv; u32 cmd; @@ -201,7 +200,6 @@ static ssize_t nxp_spifi_write(struct spi_nor *nor, loff_t to, size_t len, return ret; writel(to, spifi->io_base + SPIFI_ADDR); - *retlen += len; cmd = SPIFI_CMD_DOUT | SPIFI_CMD_DATALEN(len) | diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c index f204d29d1139..34dd95373e77 100644 --- a/drivers/mtd/spi-nor/spi-nor.c +++ b/drivers/mtd/spi-nor/spi-nor.c @@ -1031,12 +1031,13 @@ static int spi_nor_read(struct mtd_info *mtd, loff_t from, size_t len, if (ret) return ret; - ret = nor->read(nor, from, len, retlen, buf); + ret = nor->read(nor, from, len, buf); spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_READ); if (ret < 0) return ret; + *retlen += ret; return 0; } @@ -1063,7 +1064,7 @@ static int sst_write(struct mtd_info *mtd, loff_t to, size_t len, nor->program_opcode = SPINOR_OP_BP; /* write one byte. */ - ret = nor->write(nor, to, 1, retlen, buf); + ret = nor->write(nor, to, 1, buf); if (ret < 0) goto sst_write_err; WARN(ret != 1, "While writing 1 byte written %i bytes\n", @@ -1079,7 +1080,7 @@ static int sst_write(struct mtd_info *mtd, loff_t to, size_t len, nor->program_opcode = SPINOR_OP_AAI_WP; /* write two bytes. */ - ret = nor->write(nor, to, 2, retlen, buf + actual); + ret = nor->write(nor, to, 2, buf + actual); if (ret < 0) goto sst_write_err; WARN(ret != 2, "While writing 2 bytes written %i bytes\n", @@ -1102,7 +1103,7 @@ static int sst_write(struct mtd_info *mtd, loff_t to, size_t len, write_enable(nor); nor->program_opcode = SPINOR_OP_BP; - ret = nor->write(nor, to, 1, retlen, buf + actual); + ret = nor->write(nor, to, 1, buf + actual); if (ret < 0) goto sst_write_err; WARN(ret != 1, "While writing 1 byte written %i bytes\n", @@ -1111,8 +1112,10 @@ static int sst_write(struct mtd_info *mtd, loff_t to, size_t len, if (ret) goto sst_write_err; write_disable(nor); + actual += 1; } sst_write_err: + *retlen += actual; spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_WRITE); return ret; } @@ -1141,15 +1144,17 @@ static int spi_nor_write(struct mtd_info *mtd, loff_t to, size_t len, /* do all the bytes fit onto one page? */ if (page_offset + len <= nor->page_size) { - ret = nor->write(nor, to, len, retlen, buf); + ret = nor->write(nor, to, len, buf); if (ret < 0) goto write_err; + *retlen += ret; } else { /* the size of data remaining on the first page */ page_size = nor->page_size - page_offset; - ret = nor->write(nor, to, page_size, retlen, buf); + ret = nor->write(nor, to, page_size, buf); if (ret < 0) goto write_err; + *retlen += ret; /* write everything in nor->page_size chunks */ for (i = ret; i < len; ) { @@ -1163,10 +1168,10 @@ static int spi_nor_write(struct mtd_info *mtd, loff_t to, size_t len, write_enable(nor); - ret = nor->write(nor, to + i, page_size, retlen, - buf + i); + ret = nor->write(nor, to + i, page_size, buf + i); if (ret < 0) goto write_err; + *retlen += ret; i += ret; } } |