The ili9322 driver has a volatile_reg() operation in it's regmap which
always returns false. This is redundant since it is the default in the
regmap core, remove the operation for a trivial code size and performance
improvement.

Signed-off-by: Mark Brown <broonie@kernel.org>
---
 drivers/gpu/drm/panel/panel-ilitek-ili9322.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9322.c b/drivers/gpu/drm/panel/panel-ilitek-ili9322.c
index 61c872f0f7ca..15b81e5228b5 100644
--- a/drivers/gpu/drm/panel/panel-ilitek-ili9322.c
+++ b/drivers/gpu/drm/panel/panel-ilitek-ili9322.c
@@ -325,11 +325,6 @@ static struct regmap_bus ili9322_regmap_bus = {
 	.val_format_endian_default = REGMAP_ENDIAN_BIG,
 };
 
-static bool ili9322_volatile_reg(struct device *dev, unsigned int reg)
-{
-	return false;
-}
-
 static bool ili9322_writeable_reg(struct device *dev, unsigned int reg)
 {
 	/* Just register 0 is read-only */
@@ -343,7 +338,6 @@ static const struct regmap_config ili9322_regmap_config = {
 	.val_bits = 8,
 	.max_register = 0x44,
 	.cache_type = REGCACHE_RBTREE,
-	.volatile_reg = ili9322_volatile_reg,
 	.writeable_reg = ili9322_writeable_reg,
 };
 

-- 
2.39.2

On 01/10/2023 12:24, Mark Brown wrote:
> The ili9322 driver has a volatile_reg() operation in it's regmap which
> always returns false. This is redundant since it is the default in the
> regmap core, remove the operation for a trivial code size and performance
> improvement.
> 
> Signed-off-by: Mark Brown <broonie@kernel.org>
> ---
>   drivers/gpu/drm/panel/panel-ilitek-ili9322.c | 6 ------
>   1 file changed, 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9322.c b/drivers/gpu/drm/panel/panel-ilitek-ili9322.c
> index 61c872f0f7ca..15b81e5228b5 100644
> --- a/drivers/gpu/drm/panel/panel-ilitek-ili9322.c
> +++ b/drivers/gpu/drm/panel/panel-ilitek-ili9322.c
> @@ -325,11 +325,6 @@ static struct regmap_bus ili9322_regmap_bus = {
>   	.val_format_endian_default = REGMAP_ENDIAN_BIG,
>   };
>   
> -static bool ili9322_volatile_reg(struct device *dev, unsigned int reg)
> -{
> -	return false;
> -}
> -
>   static bool ili9322_writeable_reg(struct device *dev, unsigned int reg)
>   {
>   	/* Just register 0 is read-only */
> @@ -343,7 +338,6 @@ static const struct regmap_config ili9322_regmap_config = {
>   	.val_bits = 8,
>   	.max_register = 0x44,
>   	.cache_type = REGCACHE_RBTREE,
> -	.volatile_reg = ili9322_volatile_reg,
>   	.writeable_reg = ili9322_writeable_reg,
>   };
>   
> 

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>