diff options
| author | Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> | 2024-07-07 13:48:23 +0200 |
|---|---|---|
| committer | Lee Jones <lee@kernel.org> | 2024-08-30 09:40:13 +0100 |
| commit | 82f898f47112bc7b787cb9ce8803c4e2f9f60c89 (patch) | |
| tree | f74b0175d7eb781233cff1b9ffc75559d72a2026 | |
| parent | 4194783812687c5ee51e8f06ec7eb008afdc6764 (diff) | |
mfd: syscon: Use scoped variables with memory allocators to simplify error paths
Allocate the memory with scoped/cleanup.h to reduce error handling and
make the code a bit simpler.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240707114823.9175-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Lee Jones <lee@kernel.org>
| -rw-r--r-- | drivers/mfd/syscon.c | 20 |
1 files changed, 7 insertions, 13 deletions
diff --git a/drivers/mfd/syscon.c b/drivers/mfd/syscon.c index 33f1e07ab24d..2ce15f60eb10 100644 --- a/drivers/mfd/syscon.c +++ b/drivers/mfd/syscon.c @@ -8,6 +8,7 @@ * Author: Dong Aisheng <dong.aisheng@linaro.org> */ +#include <linux/cleanup.h> #include <linux/clk.h> #include <linux/err.h> #include <linux/hwspinlock.h> @@ -45,7 +46,6 @@ static const struct regmap_config syscon_regmap_config = { static struct syscon *of_syscon_register(struct device_node *np, bool check_res) { struct clk *clk; - struct syscon *syscon; struct regmap *regmap; void __iomem *base; u32 reg_io_width; @@ -54,20 +54,16 @@ static struct syscon *of_syscon_register(struct device_node *np, bool check_res) struct resource res; struct reset_control *reset; - syscon = kzalloc(sizeof(*syscon), GFP_KERNEL); + struct syscon *syscon __free(kfree) = kzalloc(sizeof(*syscon), GFP_KERNEL); if (!syscon) return ERR_PTR(-ENOMEM); - if (of_address_to_resource(np, 0, &res)) { - ret = -ENOMEM; - goto err_map; - } + if (of_address_to_resource(np, 0, &res)) + return ERR_PTR(-ENOMEM); base = of_iomap(np, 0); - if (!base) { - ret = -ENOMEM; - goto err_map; - } + if (!base) + return ERR_PTR(-ENOMEM); /* Parse the device's DT node for an endianness specification */ if (of_property_read_bool(np, "big-endian")) @@ -152,7 +148,7 @@ static struct syscon *of_syscon_register(struct device_node *np, bool check_res) list_add_tail(&syscon->list, &syscon_list); spin_unlock(&syscon_list_slock); - return syscon; + return_ptr(syscon); err_reset: reset_control_put(reset); @@ -163,8 +159,6 @@ err_clk: regmap_exit(regmap); err_regmap: iounmap(base); -err_map: - kfree(syscon); return ERR_PTR(ret); } |