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drm/i915: Simplify error handling in __intel_set_mode()

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The remaining parts of the failure path could only be reached if the
allocation of crtc_state_copy would fail. In that case, there is nothing
to undo, so just get rid of the label for error handling and return an
error code immediately.

We also always allocate a pipe_config, even if the pipe is being
disabled, so the remaining part of what was the error/done case can be
simplified a little too.

v2: Ignore return value from drm_plane_helper_update(). (Ander)

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ander Conselvan de Oliveira 2015-04-21 17:13:07 +03:00 committed by Daniel Vetter
parent 054518ddff
commit 9eb45f228f
1 changed files with 11 additions and 17 deletions
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28
drivers/gpu/drm/i915/intel_display.c
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@ -12278,10 +12278,8 @@ static int __intel_set_mode(struct drm_crtc *modeset_crtc,
return ret;
crtc_state_copy = kmalloc(sizeof(*crtc_state_copy), GFP_KERNEL);
if (!crtc_state_copy) {
ret = -ENOMEM;
goto done;
}
if (!crtc_state_copy)
return -ENOMEM;
for_each_crtc_in_state(state, crtc, crtc_state, i) {
if (!needs_modeset(crtc_state))
@ -12337,6 +12335,7 @@ static int __intel_set_mode(struct drm_crtc *modeset_crtc,
hdisplay, vdisplay,
x << 16, y << 16,
hdisplay << 16, vdisplay << 16);
WARN_ON(ret != 0);
}
/* Now enable the clocks, plane, pipe, and connectors that we set up. */
@ -12351,21 +12350,16 @@ static int __intel_set_mode(struct drm_crtc *modeset_crtc,
}
/* FIXME: add subpixel order */
done:
if (ret == 0 && pipe_config) {
struct intel_crtc *intel_crtc = to_intel_crtc(modeset_crtc);
/* The pipe_config will be freed with the atomic state, so
* make a copy. */
memcpy(crtc_state_copy, intel_crtc->config,
sizeof *crtc_state_copy);
intel_crtc->config = crtc_state_copy;
intel_crtc->base.state = &crtc_state_copy->base;
} else {
kfree(crtc_state_copy);
}
intel_crtc = to_intel_crtc(modeset_crtc);
return ret;
/* The pipe_config will be freed with the atomic state, so
* make a copy. */
memcpy(crtc_state_copy, intel_crtc->config, sizeof *crtc_state_copy);
intel_crtc->config = crtc_state_copy;
intel_crtc->base.state = &crtc_state_copy->base;
return 0;
}
static int intel_set_mode_with_config(struct drm_crtc *crtc,