[PATCH 6.1 0756/1146] fbdev: via: Fix error in via_core_init()

Greg Kroah-Hartman
2022-12-28T16:28:05Z

From: Shang XiaoJing <shangxiaojing@huawei.com>

[ Upstream commit 5886b130de953cfb8826f7771ec8640a79934a7f ]

via_core_init() won't exit the driver when pci_register_driver() failed.
Exit the viafb-i2c and the viafb-gpio in failed path to prevent error.

VIA Graphics Integration Chipset framebuffer 2.4 initializing
Error: Driver 'viafb-i2c' is already registered, aborting...
Error: Driver 'viafb-gpio' is already registered, aborting...

Fixes: 7582eb9be85f ("viafb: Turn GPIO and i2c into proper platform devices")
Signed-off-by: Shang XiaoJing <shangxiaojing@huawei.com>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/video/fbdev/via/via-core.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/video/fbdev/via/via-core.c b/drivers/video/fbdev/via/via-core.c
index 2ee8fcae08df..b8cd04defc5e 100644
--- a/drivers/video/fbdev/via/via-core.c
+++ b/drivers/video/fbdev/via/via-core.c
@@ -730,7 +730,14 @@ static int __init via_core_init(void)
return ret;
viafb_i2c_init();
viafb_gpio_init();
- return pci_register_driver(&via_driver);
+ ret = pci_register_driver(&via_driver);
+ if (ret) {
+ viafb_gpio_exit();
+ viafb_i2c_exit();
+ return ret;
+ }
+
+ return 0;
}

static void __exit via_core_exit(void)
--
2.35.1