diff options
| author | Boris Brezillon <boris.brezillon@bootlin.com> | 2018-10-19 11:02:22 +0200 |
|---|---|---|
| committer | Boris Brezillon <boris.brezillon@bootlin.com> | 2018-11-05 23:52:40 +0100 |
| commit | 90c31cb9a8115a1183daed9a714eea4be0687931 (patch) | |
| tree | 531c43f12d4fbc0173ac088f6d4abbb912250d63 | |
| parent | 91d7b67000c6e9bd605624079fee5a084238ad92 (diff) | |
mtd: spi-nor: Reset nor->addr_width when SFDP parsing failed
Commit 5390a8df769e ("mtd: spi-nor: add support to non-uniform SFDP SPI
NOR flash memories") removed the 'nor->addr_width = 0;' statement when
spi_nor_parse_sfdp() returns an error, thus leaving ->addr_width in an
undefined state which can cause trouble when spi_nor_scan() checks its
value.
Reported-by: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
Fixes: 5390a8df769e ("mtd: spi-nor: add support to non-uniform SFDP SPI NOR flash memories")
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
| -rw-r--r-- | drivers/mtd/spi-nor/spi-nor.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c index 9407ca5f9443..3e54e31889c7 100644 --- a/drivers/mtd/spi-nor/spi-nor.c +++ b/drivers/mtd/spi-nor/spi-nor.c @@ -3250,12 +3250,14 @@ static int spi_nor_init_params(struct spi_nor *nor, memcpy(&sfdp_params, params, sizeof(sfdp_params)); memcpy(&prev_map, &nor->erase_map, sizeof(prev_map)); - if (spi_nor_parse_sfdp(nor, &sfdp_params)) + if (spi_nor_parse_sfdp(nor, &sfdp_params)) { + nor->addr_width = 0; /* restore previous erase map */ memcpy(&nor->erase_map, &prev_map, sizeof(nor->erase_map)); - else + } else { memcpy(params, &sfdp_params, sizeof(*params)); + } } return 0; |