Re: [PATCH] isdn: isdnloop: fix pointer dereference bug

[David Miller]

From: Arnd Bergmann <arnd@xxxxxxxx>
Date: Thu,  7 Mar 2019 10:32:07 +0100

> clang has spotted an ancient code bug and warns about it with:
> 
> drivers/isdn/isdnloop/isdnloop.c:573:12: error: address of array 'card->rcard' will always evaluate to 'true' [-Werror,-Wpointer-bool-conversion]
> 
> This is an array of pointers, so we should check if a specific
> pointer exists in the array before using it, not whether the
> array itself exists.
> 
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>

Applied.