[PATCH] firmware: sysfb: fix platform-device leak in error path

From: Johan Hovold
Date: Thu Mar 03 2022 - 13:06:14 EST


Make sure to free the platform device also in the unlikely event that
registration fails.

Fixes: 0589e8889dce ("drivers/firmware: Add missing platform_device_put() in sysfb_create_simplefb")
Fixes: 8633ef82f101 ("drivers/firmware: consolidate EFI framebuffer setup for all arches")
Cc: stable@xxxxxxxxxxxxxxx # 5.14
Cc: Miaoqian Lin <linmq006@xxxxxxxxx>
Cc: Javier Martinez Canillas <javierm@xxxxxxxxxx>
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
---
drivers/firmware/sysfb_simplefb.c | 23 ++++++++++++++---------
1 file changed, 14 insertions(+), 9 deletions(-)

diff --git a/drivers/firmware/sysfb_simplefb.c b/drivers/firmware/sysfb_simplefb.c
index 303a491e520d..757cc8b9f3de 100644
--- a/drivers/firmware/sysfb_simplefb.c
+++ b/drivers/firmware/sysfb_simplefb.c
@@ -113,16 +113,21 @@ __init int sysfb_create_simplefb(const struct screen_info *si,
sysfb_apply_efi_quirks(pd);

ret = platform_device_add_resources(pd, &res, 1);
- if (ret) {
- platform_device_put(pd);
- return ret;
- }
+ if (ret)
+ goto err_put_device;

ret = platform_device_add_data(pd, mode, sizeof(*mode));
- if (ret) {
- platform_device_put(pd);
- return ret;
- }
+ if (ret)
+ goto err_put_device;
+
+ ret = platform_device_add(pd);
+ if (ret)
+ goto err_put_device;
+
+ return 0;
+
+err_put_device:
+ platform_device_put(pd);

- return platform_device_add(pd);
+ return ret;
}
--
2.34.1