Am 13.11.20 um 16:29 schrieb Maxime Ripard:
When we can't allocate a new channel, we can simply return instead of having to handle both cases, and that simplifies a bit the code. Signed-off-by: Maxime Ripard <maxime@xxxxxxxxxx>
Reviewed-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
--- drivers/gpu/drm/vc4/vc4_kms.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/vc4/vc4_kms.c b/drivers/gpu/drm/vc4/vc4_kms.c index 3d0065df10f9..3034a5a6637e 100644 --- a/drivers/gpu/drm/vc4/vc4_kms.c +++ b/drivers/gpu/drm/vc4/vc4_kms.c @@ -794,6 +794,7 @@ static int vc4_pv_muxing_atomic_check(struct drm_device *dev, to_vc4_crtc_state(new_crtc_state); struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); unsigned int matching_channels; + unsigned int channel;/* Nothing to do here, let's skip it */if ((old_crtc_state->enable && new_crtc_state->enable) || @@ -837,14 +838,12 @@ static int vc4_pv_muxing_atomic_check(struct drm_device *dev, * but it works so far. */ matching_channels = hvs_state->unassigned_channels & vc4_crtc->data->hvs_available_channels; - if (matching_channels) { - unsigned int channel = ffs(matching_channels) - 1; - - new_vc4_crtc_state->assigned_channel = channel; - hvs_state->unassigned_channels &= ~BIT(channel); - } else { + if (!matching_channels) return -EINVAL; - } + + channel = ffs(matching_channels) - 1; + new_vc4_crtc_state->assigned_channel = channel; + hvs_state->unassigned_channels &= ~BIT(channel); }return 0;
-- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Maxfeldstr. 5, 90409 Nürnberg, Germany (HRB 36809, AG Nürnberg) Geschäftsführer: Felix Imendörffer
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