[PATCH] telephony: phonedev panics if unregistering device not registered [Bug 9266]

From: Matti Linnanvuori
Date: Wed Oct 31 2007 - 13:12:42 EST


From: Matti Linnanvuori <mattilinnanvuori@xxxxxxxxx>

Remove panic from phonedev.

Signed-off-by: Matti Linnanvuori <mattilinnanvuori@xxxxxxxxx>
---

--- a/drivers/telephony/phonedev.c 2007-10-31 17:52:55.784817000 +0200
+++ linux-2.6.24/drivers/telephony/phonedev.c 2007-10-31 17:55:48.144879000 +0200
@@ -120,9 +120,8 @@ int phone_register_device(struct phone_d
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);
}





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