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drm/panfrost: Skip speed binning on EOPNOTSUPP
commit f19df6e upstream. Encountered on an ARM Mali-T760 MP4, attempting to read the nvmem variable can also return EOPNOTSUPP instead of ENOENT when speed binning is unsupported. Cc: <stable@vger.kernel.org> Fixes: 7d690f9 ("drm/panfrost: Add basic support for speed binning") Signed-off-by: David Michael <fedora.dm0@gmail.com> Reviewed-by: Steven Price <steven.price@arm.com> Signed-off-by: Steven Price <steven.price@arm.com> Link: https://patchwork.freedesktop.org/patch/msgid/87msyryd7y.fsf@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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