From: Dan Carpenter dan.carpenter@oracle.com
[ Upstream commit ba1c30bf3f2536f248d262c6f257b5a787305991 ]
These functions should return zero on success. Non-zero returns are treated as error. On some paths, this doesn't matter but in nvmem_cell_read() a non-zero return would be passed to ERR_PTR() and lead to an Oops.
Fixes: d6c3029f32f7 ("rtc: pcf2127: add support for accessing internal static RAM") Signed-off-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Alexandre Belloni alexandre.belloni@bootlin.com Link: https://lore.kernel.org/r/20201022070451.GA2817669@mwanda Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/rtc/rtc-pcf2127.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/drivers/rtc/rtc-pcf2127.c b/drivers/rtc/rtc-pcf2127.c index 02b069caffd57..d1d37a204264c 100644 --- a/drivers/rtc/rtc-pcf2127.c +++ b/drivers/rtc/rtc-pcf2127.c @@ -230,10 +230,8 @@ static int pcf2127_nvmem_read(void *priv, unsigned int offset, if (ret) return ret;
- ret = regmap_bulk_read(pcf2127->regmap, PCF2127_REG_RAM_RD_CMD, - val, bytes); - - return ret ?: bytes; + return regmap_bulk_read(pcf2127->regmap, PCF2127_REG_RAM_RD_CMD, + val, bytes); }
static int pcf2127_nvmem_write(void *priv, unsigned int offset, @@ -248,10 +246,8 @@ static int pcf2127_nvmem_write(void *priv, unsigned int offset, if (ret) return ret;
- ret = regmap_bulk_write(pcf2127->regmap, PCF2127_REG_RAM_WRT_CMD, - val, bytes); - - return ret ?: bytes; + return regmap_bulk_write(pcf2127->regmap, PCF2127_REG_RAM_WRT_CMD, + val, bytes); }
/* watchdog driver */