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drm: atmel-hlcdc: fix vblank initial state 

drm_vblank_on() now warns on nested use or if vblank is not properly
initialized. This patch fixes Atmel HLCDC vblank initial state.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Reported-by: Sylvain Rochet <sylvain.rochet@finsecur.com>
This commit is contained in:
Boris Brezillon 2015-07-16 20:55:34 +02:00
parent e930888487
commit 8c4b4b0d19
2 changed files with 7 additions and 6 deletions
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1
drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
View File

@ -355,6 +355,7 @@ int atmel_hlcdc_crtc_create(struct drm_device *dev)
planes->overlays[i]->base.possible_crtcs = 1 << crtc->id;
drm_crtc_helper_add(&crtc->base, &lcdc_crtc_helper_funcs);
drm_crtc_vblank_reset(&crtc->base);
dc->crtc = &crtc->base;

12
drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
View File

@ -313,6 +313,12 @@ static int atmel_hlcdc_dc_load(struct drm_device *dev)
pm_runtime_enable(dev->dev);
ret = drm_vblank_init(dev, 1);
if (ret < 0) {
dev_err(dev->dev, "failed to initialize vblank\n");
goto err_periph_clk_disable;
}
ret = atmel_hlcdc_dc_modeset_init(dev);
if (ret < 0) {
dev_err(dev->dev, "failed to initialize mode setting\n");
@ -321,12 +327,6 @@ static int atmel_hlcdc_dc_load(struct drm_device *dev)
drm_mode_config_reset(dev);
ret = drm_vblank_init(dev, 1);
if (ret < 0) {
dev_err(dev->dev, "failed to initialize vblank\n");
goto err_periph_clk_disable;
}
pm_runtime_get_sync(dev->dev);
ret = drm_irq_install(dev, dc->hlcdc->irq);
pm_runtime_put_sync(dev->dev);