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author | Gustavo A. R. Silva <gustavo@embeddedor.com> | 2019-08-30 03:53:20 +0300 |
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committer | Jacek Anaszewski <jacek.anaszewski@gmail.com> | 2019-09-01 14:33:29 +0300 |
commit | d4b02200ae7cc5886be01c0d7f1d335f4b6966a7 (patch) | |
tree | fb3a7fb74e0dee8b78519d4331d7b25fa3a15650 /drivers/leds/trigger | |
parent | 1669ec78b87c0f04c963a5fc0885505d97468c7a (diff) | |
download | linux-d4b02200ae7cc5886be01c0d7f1d335f4b6966a7.tar.xz |
leds: pwm: Use struct_size() helper
One of the more common cases of allocation size calculations is finding
the size of a structure that has a zero-sized array at the end, along
with memory for some number of elements for that array. For example:
struct led_pwm_priv {
...
struct led_pwm_data leds[0];
};
Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes.
So, replace the following function:
static inline size_t sizeof_pwm_leds_priv(int num_leds)
{
return sizeof(struct led_pwm_priv) +
(sizeof(struct led_pwm_data) * num_leds);
}
with:
struct_size(priv, leds, count)
This code was detected with the help of Coccinelle.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Diffstat (limited to 'drivers/leds/trigger')
0 files changed, 0 insertions, 0 deletions