From: Rob Herring (Arm) Date: Wed, 31 Jul 2024 20:14:03 +0000 (-0600) Subject: pwm: lp3943: Use of_property_count_u32_elems() to get property length X-Git-Tag: v6.12-rc1~157^2~13 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=75f0cb339b78;p=linux-block.git pwm: lp3943: Use of_property_count_u32_elems() to get property length Replace of_get_property() with the type specific of_property_count_u32_elems() to get the property length. This is part of a larger effort to remove callers of of_get_property() and similar functions. of_get_property() leaks the DT property data pointer which is a problem for dynamically allocated nodes which may be freed. Signed-off-by: Rob Herring (Arm) Link: https://lore.kernel.org/r/20240731201407.1838385-8-robh@kernel.org Signed-off-by: Uwe Kleine-König --- diff --git a/drivers/pwm/pwm-lp3943.c b/drivers/pwm/pwm-lp3943.c index 61189cea1046..f0e94c9e5956 100644 --- a/drivers/pwm/pwm-lp3943.c +++ b/drivers/pwm/pwm-lp3943.c @@ -218,7 +218,7 @@ static int lp3943_pwm_parse_dt(struct device *dev, struct lp3943_platform_data *pdata; struct lp3943_pwm_map *pwm_map; enum lp3943_pwm_output *output; - int i, err, proplen, count = 0; + int i, err, count = 0; u32 num_outputs; if (!node) @@ -234,11 +234,8 @@ static int lp3943_pwm_parse_dt(struct device *dev, */ for (i = 0; i < LP3943_NUM_PWMS; i++) { - if (!of_get_property(node, name[i], &proplen)) - continue; - - num_outputs = proplen / sizeof(u32); - if (num_outputs == 0) + num_outputs = of_property_count_u32_elems(node, name[i]); + if (num_outputs <= 0) continue; output = devm_kcalloc(dev, num_outputs, sizeof(*output),