From: Matti Linnanvuori Date: Mon, 5 Nov 2007 22:51:02 +0000 (-0800) Subject: telephony: phonedev panics if unregistering device not registered [Bug 9266] X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=01aae97196f2cdfbfebc5a0365bad82d98975588;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git telephony: phonedev panics if unregistering device not registered [Bug 9266] Remove panic from phonedev. See http://bugzilla.kernel.org/show_bug.cgi?id=9266 for details (phonedev panics if unregistering device not registered). Signed-off-by: Matti Linnanvuori Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/drivers/telephony/phonedev.c b/drivers/telephony/phonedev.c index 4d8c2a5b3297..bcea8d9b718c 100644 --- a/drivers/telephony/phonedev.c +++ b/drivers/telephony/phonedev.c @@ -120,9 +120,8 @@ int phone_register_device(struct phone_device *p, int unit) void phone_unregister_device(struct phone_device *pfd) { mutex_lock(&phone_lock); - if (phone_device[pfd->minor] != pfd) - panic("phone: bad unregister"); - phone_device[pfd->minor] = NULL; + if (likely(phone_device[pfd->minor] == pfd)) + phone_device[pfd->minor] = NULL; mutex_unlock(&phone_lock); }