aboutsummaryrefslogtreecommitdiffstats
path: root/drivers
diff options
context:
space:
mode:
authorGustavo A. R. Silva <gustavo@embeddedor.com>2019-08-30 13:14:48 -0500
committerJacek Anaszewski <jacek.anaszewski@gmail.com>2019-09-01 13:33:29 +0200
commit1669ec78b87c0f04c963a5fc0885505d97468c7a (patch)
tree5520f9694ca4fda4fdb1e1b1ce99c679258ba92e /drivers
parentleds: ti-lmu-common: Fix coccinelle issue in TI LMU (diff)
downloadlinux-dev-1669ec78b87c0f04c963a5fc0885505d97468c7a.tar.xz
linux-dev-1669ec78b87c0f04c963a5fc0885505d97468c7a.zip
leds: is31fl32xx: 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 is31fl32xx_priv { ... struct is31fl32xx_led_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_is31fl32xx_priv(int num_leds) { return sizeof(struct is31fl32xx_priv) + (sizeof(struct is31fl32xx_led_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> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/leds/leds-is31fl32xx.c8
1 files changed, 1 insertions, 7 deletions
diff --git a/drivers/leds/leds-is31fl32xx.c b/drivers/leds/leds-is31fl32xx.c
index 6fbab70dfb04..6f29b8943913 100644
--- a/drivers/leds/leds-is31fl32xx.c
+++ b/drivers/leds/leds-is31fl32xx.c
@@ -324,12 +324,6 @@ static int is31fl32xx_init_regs(struct is31fl32xx_priv *priv)
return 0;
}
-static inline size_t sizeof_is31fl32xx_priv(int num_leds)
-{
- return sizeof(struct is31fl32xx_priv) +
- (sizeof(struct is31fl32xx_led_data) * num_leds);
-}
-
static int is31fl32xx_parse_child_dt(const struct device *dev,
const struct device_node *child,
struct is31fl32xx_led_data *led_data)
@@ -450,7 +444,7 @@ static int is31fl32xx_probe(struct i2c_client *client,
if (!count)
return -EINVAL;
- priv = devm_kzalloc(dev, sizeof_is31fl32xx_priv(count),
+ priv = devm_kzalloc(dev, struct_size(priv, leds, count),
GFP_KERNEL);
if (!priv)
return -ENOMEM;