Some mtd drivers like the spi-nor driver do not assign a value
to the retlen pointer but instead only add the bytes written
to *retlen. Users of mtd_write expect the variable to be initialized
by the mtd core though, so we have to do it in mtd_write(). The
same is done in mtd_read already.
Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
---
drivers/mtd/core.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/mtd/core.c b/drivers/mtd/core.c
index d873369..62307db 100644
--- a/drivers/mtd/core.c
+++ b/drivers/mtd/core.c
@@ -340,6 +340,8 @@ int mtd_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen,
int mtd_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen,
const u_char *buf)
{
+ *retlen = 0;
+
return mtd->write(mtd, to, len, retlen, buf);
}
--
2.6.2
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