[PATCH v2 2/2] wwan: core: Unshadow error code returned by ida_alloc_range))

From: Andy Shevchenko
Date: Fri Aug 06 2021 - 05:01:07 EST


ida_alloc_range)) may return other than -ENOMEM error code.
Unshadow it in the wwan_create_port().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
v2: new patch
drivers/net/wwan/wwan_core.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wwan/wwan_core.c b/drivers/net/wwan/wwan_core.c
index 35ece98134c0..d293ab688044 100644
--- a/drivers/net/wwan/wwan_core.c
+++ b/drivers/net/wwan/wwan_core.c
@@ -359,8 +359,8 @@ struct wwan_port *wwan_create_port(struct device *parent,
{
struct wwan_device *wwandev;
struct wwan_port *port;
- int minor, err = -ENOMEM;
char namefmt[0x20];
+ int minor, err;

if (type > WWAN_PORT_MAX || !ops)
return ERR_PTR(-EINVAL);
@@ -374,11 +374,14 @@ struct wwan_port *wwan_create_port(struct device *parent,

/* A port is exposed as character device, get a minor */
minor = ida_alloc_range(&minors, 0, WWAN_MAX_MINORS - 1, GFP_KERNEL);
- if (minor < 0)
+ if (minor < 0) {
+ err = minor;
goto error_wwandev_remove;
+ }

port = kzalloc(sizeof(*port), GFP_KERNEL);
if (!port) {
+ err = -ENOMEM;
ida_free(&minors, minor);
goto error_wwandev_remove;
}
--
2.30.2