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This could be the case for availability checks during probe(). Signed-off-by: Benjamin Bara --- drivers/media/v4l2-core/v4l2-cci.c | 5 ++++- include/media/v4l2-cci.h | 2 +- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/media/v4l2-core/v4l2-cci.c b/drivers/media/v4l2-core/v4l2-cci.c index 1ff94affbaf3..c402e0377a57 100644 --- a/drivers/media/v4l2-core/v4l2-cci.c +++ b/drivers/media/v4l2-core/v4l2-cci.c @@ -30,7 +30,8 @@ int cci_read(struct regmap *map, u32 reg, u64 *val, int *err) * to a valid value whenever this function returns 0 but smatch * can't figure that out currently. */ - *val = 0; + if (val) + *val = 0; if (err && *err) return *err; @@ -45,6 +46,8 @@ int cci_read(struct regmap *map, u32 reg, u64 *val, int *err) reg, ret); goto out; } + if (!val) + goto out; switch (len) { case 1: diff --git a/include/media/v4l2-cci.h b/include/media/v4l2-cci.h index 4e96e90ee636..ef5e0d875e68 100644 --- a/include/media/v4l2-cci.h +++ b/include/media/v4l2-cci.h @@ -60,7 +60,7 @@ struct cci_reg_sequence { * * @map: Register map to read from * @reg: Register address to read, use CCI_REG#() macros to encode reg width - * @val: Pointer to store read value + * @val: Optional pointer to store read value * @err: Optional pointer to store errors, if a previous error is set * then the read will be skipped *