[PATCH 3/3] soc: ti: pm33xx: do device_node auto cleanup

Kousik Sanagavarapu
2024-05-10T07:15:04Z

Use scope based cleanup instead of manual of_node_put() calls, hence
simplifying the handling of error paths.

Suggested-by: Julia Lawall <julia.lawall@inria.fr>
Signed-off-by: Kousik Sanagavarapu <five231003@gmail.com>
---
drivers/soc/ti/pm33xx.c | 20 +++++++-------------
1 file changed, 7 insertions(+), 13 deletions(-)

diff --git a/drivers/soc/ti/pm33xx.c b/drivers/soc/ti/pm33xx.c
index 8e983c3c4e03..40988c45ed00 100644
--- a/drivers/soc/ti/pm33xx.c
+++ b/drivers/soc/ti/pm33xx.c
@@ -383,10 +383,9 @@ static void am33xx_pm_free_sram(void)
*/
static int am33xx_pm_alloc_sram(void)
{
- struct device_node *np;
- int ret = 0;
+ struct device_node *np __free(device_node) =
+ of_find_compatible_node(NULL, NULL, "ti,omap3-mpu");

- np = of_find_compatible_node(NULL, NULL, "ti,omap3-mpu");
if (!np) {
np = of_find_compatible_node(NULL, NULL, "ti,omap4-mpu");
if (!np) {
@@ -400,24 +399,21 @@ static int am33xx_pm_alloc_sram(void)
if (!sram_pool) {
dev_err(pm33xx_dev, "PM: %s: Unable to get sram pool for ocmcram\n",
__func__);
- ret = -ENODEV;
- goto mpu_put_node;
+ return -ENODEV;
}

sram_pool_data = of_gen_pool_get(np, "pm-sram", 1);
if (!sram_pool_data) {
dev_err(pm33xx_dev, "PM: %s: Unable to get sram data pool for ocmcram\n",
__func__);
- ret = -ENODEV;
- goto mpu_put_node;
+ return -ENODEV;
}

ocmcram_location = gen_pool_alloc(sram_pool, *pm_sram->do_wfi_sz);
if (!ocmcram_location) {
dev_err(pm33xx_dev, "PM: %s: Unable to allocate memory from ocmcram\n",
__func__);
- ret = -ENOMEM;
- goto mpu_put_node;
+ return -ENOMEM;
}

ocmcram_location_data = gen_pool_alloc(sram_pool_data,
@@ -425,12 +421,10 @@ static int am33xx_pm_alloc_sram(void)
if (!ocmcram_location_data) {
dev_err(pm33xx_dev, "PM: Unable to allocate memory from ocmcram\n");
gen_pool_free(sram_pool, ocmcram_location, *pm_sram->do_wfi_sz);
- ret = -ENOMEM;
+ return -ENOMEM;
}

-mpu_put_node:
- of_node_put(np);
- return ret;
+ return 0;
}

static int am33xx_pm_rtc_setup(void)
--
2.45.0.rc1.8.ge326e52010