[PATCH v4 1/4] platform/x86: hp-bioscfg: Simplify return check in hp_add_other_attributes()

From: Harshit Mogalapalli
Date: Mon Nov 13 2023 - 15:08:07 EST


All cases in switch-case have a same goto on error, move the return
check out of the switch. This is a cleanup.

Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@xxxxxxxxxx>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
---
v3->v4: Add R.B from Ilpo
---
drivers/platform/x86/hp/hp-bioscfg/bioscfg.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/platform/x86/hp/hp-bioscfg/bioscfg.c b/drivers/platform/x86/hp/hp-bioscfg/bioscfg.c
index 5798b49ddaba..10676e1abc28 100644
--- a/drivers/platform/x86/hp/hp-bioscfg/bioscfg.c
+++ b/drivers/platform/x86/hp/hp-bioscfg/bioscfg.c
@@ -575,81 +575,79 @@ static void release_attributes_data(void)
/**
* hp_add_other_attributes() - Initialize HP custom attributes not
* reported by BIOS and required to support Secure Platform and Sure
* Start.
*
* @attr_type: Custom HP attribute not reported by BIOS
*
* Initialize all 2 types of attributes: Platform and Sure Start
* object. Populates each attribute types respective properties
* under sysfs files.
*
* Returns zero(0) if successful. Otherwise, a negative value.
*/
static int hp_add_other_attributes(int attr_type)
{
struct kobject *attr_name_kobj;
union acpi_object *obj = NULL;
int ret;
char *attr_name;

mutex_lock(&bioscfg_drv.mutex);

attr_name_kobj = kzalloc(sizeof(*attr_name_kobj), GFP_KERNEL);
if (!attr_name_kobj) {
ret = -ENOMEM;
goto err_other_attr_init;
}

/* Check if attribute type is supported */
switch (attr_type) {
case HPWMI_SECURE_PLATFORM_TYPE:
attr_name_kobj->kset = bioscfg_drv.authentication_dir_kset;
attr_name = SPM_STR;
break;

case HPWMI_SURE_START_TYPE:
attr_name_kobj->kset = bioscfg_drv.main_dir_kset;
attr_name = SURE_START_STR;
break;

default:
pr_err("Error: Unknown attr_type: %d\n", attr_type);
ret = -EINVAL;
goto err_other_attr_init;
}

ret = kobject_init_and_add(attr_name_kobj, &attr_name_ktype,
NULL, "%s", attr_name);
if (ret) {
pr_err("Error encountered [%d]\n", ret);
kobject_put(attr_name_kobj);
goto err_other_attr_init;
}

/* Populate attribute data */
switch (attr_type) {
case HPWMI_SECURE_PLATFORM_TYPE:
ret = hp_populate_secure_platform_data(attr_name_kobj);
- if (ret)
- goto err_other_attr_init;
break;

case HPWMI_SURE_START_TYPE:
ret = hp_populate_sure_start_data(attr_name_kobj);
- if (ret)
- goto err_other_attr_init;
break;

default:
ret = -EINVAL;
- goto err_other_attr_init;
}

+ if (ret)
+ goto err_other_attr_init;
+
mutex_unlock(&bioscfg_drv.mutex);
return 0;

err_other_attr_init:
mutex_unlock(&bioscfg_drv.mutex);
kfree(obj);
return ret;
}
--
2.42.0