From: Tudor Ambarus <[email protected]> In case the write of the first byte failed, retlen was incorrectly incremented to *retlen += actual; on the exit path. retlen should be incremented when actual data was written to the flash.
Rename 'sst_write_err' label to 'out' as it is no longer generic for all the write errors in the sst_write() method, and may introduce confusion. Signed-off-by: Tudor Ambarus <[email protected]> --- drivers/mtd/spi-nor/spi-nor.c | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c index 0aee068a5835..be5dee622d51 100644 --- a/drivers/mtd/spi-nor/spi-nor.c +++ b/drivers/mtd/spi-nor/spi-nor.c @@ -2665,12 +2665,12 @@ static int sst_write(struct mtd_info *mtd, loff_t to, size_t len, /* write one byte. */ ret = spi_nor_write_data(nor, to, 1, buf); if (ret < 0) - goto sst_write_err; + goto unlock_and_unprep; WARN(ret != 1, "While writing 1 byte written %i bytes\n", (int)ret); ret = spi_nor_wait_till_ready(nor); if (ret) - goto sst_write_err; + goto unlock_and_unprep; } to += actual; @@ -2681,12 +2681,12 @@ static int sst_write(struct mtd_info *mtd, loff_t to, size_t len, /* write two bytes. */ ret = spi_nor_write_data(nor, to, 2, buf + actual); if (ret < 0) - goto sst_write_err; + goto out; WARN(ret != 2, "While writing 2 bytes written %i bytes\n", (int)ret); ret = spi_nor_wait_till_ready(nor); if (ret) - goto sst_write_err; + goto out; to += 2; nor->sst_write_second = true; } @@ -2694,35 +2694,35 @@ static int sst_write(struct mtd_info *mtd, loff_t to, size_t len, ret = spi_nor_write_disable(nor); if (ret) - goto sst_write_err; + goto out; ret = spi_nor_wait_till_ready(nor); if (ret) - goto sst_write_err; + goto out; /* Write out trailing byte if it exists. */ if (actual != len) { ret = spi_nor_write_enable(nor); if (ret) - goto sst_write_err; + goto out; nor->program_opcode = SPINOR_OP_BP; ret = spi_nor_write_data(nor, to, 1, buf + actual); if (ret < 0) - goto sst_write_err; + goto out; WARN(ret != 1, "While writing 1 byte written %i bytes\n", (int)ret); ret = spi_nor_wait_till_ready(nor); if (ret) - goto sst_write_err; + goto out; ret = spi_nor_write_disable(nor); if (ret) - goto sst_write_err; + goto out; actual += 1; } -sst_write_err: +out: *retlen += actual; unlock_and_unprep: spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_WRITE); -- 2.9.5
