From: Randy Dunlap Date: Mon, 15 Oct 2018 18:16:58 +0000 (-0700) Subject: Input: wm97xx-ts - fix exit path X-Git-Tag: v4.20-rc1~88^2^2~4 X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=a3f7c3fcf60868c1e90671df5d0cf9be5900a09b;p=uclinux-h8%2Flinux.git Input: wm97xx-ts - fix exit path Loading then unloading wm97xx-ts.ko when CONFIG_AC97_BUS=m causes a WARNING: from drivers/base/driver.c: Unexpected driver unregister! WARNING: CPU: 0 PID: 1709 at ../drivers/base/driver.c:193 driver_unregister+0x30/0x40 Fix this by only calling driver_unregister() with the same condition that driver_register() is called. Fixes: ae9d1b5fbd7b ("Input: wm97xx: add new AC97 bus support") Signed-off-by: Randy Dunlap Signed-off-by: Dmitry Torokhov --- diff --git a/drivers/input/touchscreen/wm97xx-core.c b/drivers/input/touchscreen/wm97xx-core.c index fd714ee881f7..5eb2a33111ec 100644 --- a/drivers/input/touchscreen/wm97xx-core.c +++ b/drivers/input/touchscreen/wm97xx-core.c @@ -929,7 +929,8 @@ static int __init wm97xx_init(void) static void __exit wm97xx_exit(void) { - driver_unregister(&wm97xx_driver); + if (IS_BUILTIN(CONFIG_AC97_BUS)) + driver_unregister(&wm97xx_driver); platform_driver_unregister(&wm97xx_mfd_driver); }