[Bug 102552] Null dereference due to not checking return value of util_format_description

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=102552

--- Comment #4 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Oh interesting. I think some of those formats were removed recently. I wonder
if such call sites should be fixed. Nouveau calls util_format_is_supported up
high in is_format_supported, I suspect that gets it out of trouble.

Either way, is_format_supported or its callers should be fixed, not utility
functions like util_format_get_first_non_void_channel.

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