From: Mark McLoughlin Date: Mon, 11 May 2009 17:11:44 +0000 (+0100) Subject: virtio: teach virtio_has_feature() about transport features X-Git-Tag: firefly_0821_release~13959^2~5 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ee006b353f1ca8c9a8470b72b462beb011d62e32;p=firefly-linux-kernel-4.4.55.git virtio: teach virtio_has_feature() about transport features Drivers don't add transport features to their table, so we shouldn't check these with virtio_check_driver_offered_feature(). We could perhaps add an ->offered_feature() virtio_config_op, but that perhaps that would be overkill for a consitency check like this. Signed-off-by: Mark McLoughlin Signed-off-by: Rusty Russell --- diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h index 4cd290c06a88..99f514575f6a 100644 --- a/include/linux/virtio_config.h +++ b/include/linux/virtio_config.h @@ -113,7 +113,9 @@ static inline bool virtio_has_feature(const struct virtio_device *vdev, if (__builtin_constant_p(fbit)) BUILD_BUG_ON(fbit >= 32); - virtio_check_driver_offered_feature(vdev, fbit); + if (fbit < VIRTIO_TRANSPORT_F_START) + virtio_check_driver_offered_feature(vdev, fbit); + return test_bit(fbit, vdev->features); }