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drm: add drm_fb_helper_restore_fbdev_mode_unlocked()

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All drm_fb_helper_restore_fbdev_mode() call sites, save one, do the same
locking.  Simplify this into drm_fb_helper_restore_fbdev_mode_unlocked().

Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Rob Clark 2014-05-30 12:29:48 -04:00 committed by Dave Airlie
parent 51fd371bba
commit 5ea1f752ae
10 changed files with 48 additions and 49 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/armada/armada_fbdev.c
View File

@ -181,10 +181,8 @@ void armada_fbdev_lastclose(struct drm_device *dev)
{
struct armada_private *priv = dev->dev_private;
drm_modeset_lock_all(dev);
if (priv->fbdev)
drm_fb_helper_restore_fbdev_mode(priv->fbdev);
drm_modeset_unlock_all(dev);
drm_fb_helper_restore_fbdev_mode_unlocked(priv->fbdev);
}
void armada_fbdev_fini(struct drm_device *dev)

9
drivers/gpu/drm/drm_fb_cma_helper.c
View File

@ -429,13 +429,8 @@ EXPORT_SYMBOL_GPL(drm_fbdev_cma_fini);
*/
void drm_fbdev_cma_restore_mode(struct drm_fbdev_cma *fbdev_cma)
{
if (fbdev_cma) {
struct drm_device *dev = fbdev_cma->fb_helper.dev;
drm_modeset_lock_all(dev);
drm_fb_helper_restore_fbdev_mode(&fbdev_cma->fb_helper);
drm_modeset_unlock_all(dev);
}
if (fbdev_cma)
drm_fb_helper_restore_fbdev_mode_unlocked(&fbdev_cma->fb_helper);
}
EXPORT_SYMBOL_GPL(drm_fbdev_cma_restore_mode);

50
drivers/gpu/drm/drm_fb_helper.c
View File

@ -273,15 +273,7 @@ int drm_fb_helper_debug_leave(struct fb_info *info)
}
EXPORT_SYMBOL(drm_fb_helper_debug_leave);
/**
* drm_fb_helper_restore_fbdev_mode - restore fbdev configuration
* @fb_helper: fbcon to restore
*
* This should be called from driver's drm ->lastclose callback
* when implementing an fbcon on top of kms using this helper. This ensures that
* the user isn't greeted with a black screen when e.g. X dies.
*/
bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper)
static bool restore_fbdev_mode(struct drm_fb_helper *fb_helper)
{
struct drm_device *dev = fb_helper->dev;
struct drm_plane *plane;
@ -311,7 +303,40 @@ bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper)
}
return error;
}
EXPORT_SYMBOL(drm_fb_helper_restore_fbdev_mode);
/**
* drm_fb_helper_restore_fbdev_mode - restore fbdev configuration
* @fb_helper: fbcon to restore
*
* This should be called from driver's drm ->lastclose callback
* when implementing an fbcon on top of kms using this helper. This ensures that
* the user isn't greeted with a black screen when e.g. X dies.
*
* Use this variant if you need to bypass locking (panic), or already
* hold all modeset locks. Otherwise use drm_fb_helper_restore_fbdev_mode_unlocked()
*/
static bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper)
{
return restore_fbdev_mode(fb_helper);
}
/**
* drm_fb_helper_restore_fbdev_mode_unlocked - restore fbdev configuration
* @fb_helper: fbcon to restore
*
* This should be called from driver's drm ->lastclose callback
* when implementing an fbcon on top of kms using this helper. This ensures that
* the user isn't greeted with a black screen when e.g. X dies.
*/
bool drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper)
{
struct drm_device *dev = fb_helper->dev;
bool ret;
drm_modeset_lock_all(dev);
ret = restore_fbdev_mode(fb_helper);
drm_modeset_unlock_all(dev);
return ret;
}
EXPORT_SYMBOL(drm_fb_helper_restore_fbdev_mode_unlocked);
/*
* restore fbcon display for all kms driver's using this helper, used for sysrq
@ -824,7 +849,6 @@ EXPORT_SYMBOL(drm_fb_helper_check_var);
int drm_fb_helper_set_par(struct fb_info *info)
{
struct drm_fb_helper *fb_helper = info->par;
struct drm_device *dev = fb_helper->dev;
struct fb_var_screeninfo *var = &info->var;
if (var->pixclock != 0) {
@ -832,9 +856,7 @@ int drm_fb_helper_set_par(struct fb_info *info)
return -EINVAL;
}
drm_modeset_lock_all(dev);
drm_fb_helper_restore_fbdev_mode(fb_helper);
drm_modeset_unlock_all(dev);
drm_fb_helper_restore_fbdev_mode_unlocked(fb_helper);
if (fb_helper->delayed_hotplug) {
fb_helper->delayed_hotplug = false;

4
drivers/gpu/drm/exynos/exynos_drm_fbdev.c
View File

@ -367,7 +367,5 @@ void exynos_drm_fbdev_restore_mode(struct drm_device *dev)
if (!private || !private->fb_helper)
return;
drm_modeset_lock_all(dev);
drm_fb_helper_restore_fbdev_mode(private->fb_helper);
drm_modeset_unlock_all(dev);
drm_fb_helper_restore_fbdev_mode_unlocked(private->fb_helper);
}

4
drivers/gpu/drm/gma500/psb_drv.c
View File

@ -112,11 +112,9 @@ static void psb_driver_lastclose(struct drm_device *dev)
struct drm_psb_private *dev_priv = dev->dev_private;
struct psb_fbdev *fbdev = dev_priv->fbdev;
drm_modeset_lock_all(dev);
ret = drm_fb_helper_restore_fbdev_mode(&fbdev->psb_fb_helper);
ret = drm_fb_helper_restore_fbdev_mode_unlocked(&fbdev->psb_fb_helper);
if (ret)
DRM_DEBUG("failed to restore crtc mode\n");
drm_modeset_unlock_all(dev);
return;
}

6
drivers/gpu/drm/i915/intel_fbdev.c
View File

@ -687,11 +687,7 @@ void intel_fbdev_restore_mode(struct drm_device *dev)
if (!dev_priv->fbdev)
return;
drm_modeset_lock_all(dev);
ret = drm_fb_helper_restore_fbdev_mode(&dev_priv->fbdev->helper);
ret = drm_fb_helper_restore_fbdev_mode_unlocked(&dev_priv->fbdev->helper);
if (ret)
DRM_DEBUG("failed to restore crtc mode\n");
drm_modeset_unlock_all(dev);
}

7
drivers/gpu/drm/msm/msm_drv.c
View File

@ -386,11 +386,8 @@ static void msm_preclose(struct drm_device *dev, struct drm_file *file)
static void msm_lastclose(struct drm_device *dev)
{
struct msm_drm_private *priv = dev->dev_private;
if (priv->fbdev) {
drm_modeset_lock_all(dev);
drm_fb_helper_restore_fbdev_mode(priv->fbdev);
drm_modeset_unlock_all(dev);
}
if (priv->fbdev)
drm_fb_helper_restore_fbdev_mode_unlocked(priv->fbdev);
}
static irqreturn_t msm_irq(int irq, void *arg)

4
drivers/gpu/drm/omapdrm/omap_drv.c
View File

@ -588,9 +588,7 @@ static void dev_lastclose(struct drm_device *dev)
}
}
drm_modeset_lock_all(dev);
ret = drm_fb_helper_restore_fbdev_mode(priv->fbdev);
drm_modeset_unlock_all(dev);
ret = drm_fb_helper_restore_fbdev_mode_unlocked(priv->fbdev);
if (ret)
DBG("failed to restore crtc mode");
}

7
drivers/gpu/drm/tegra/fb.c
View File

@ -346,11 +346,8 @@ static void tegra_fbdev_free(struct tegra_fbdev *fbdev)
void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev)
{
if (fbdev) {
drm_modeset_lock_all(fbdev->base.dev);
drm_fb_helper_restore_fbdev_mode(&fbdev->base);
drm_modeset_unlock_all(fbdev->base.dev);
}
if (fbdev)
drm_fb_helper_restore_fbdev_mode_unlocked(&fbdev->base);
}
static void tegra_fb_output_poll_changed(struct drm_device *drm)

2
include/drm/drm_fb_helper.h
View File

@ -108,7 +108,7 @@ int drm_fb_helper_set_par(struct fb_info *info);
int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
struct fb_info *info);
bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper);
bool drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper);
void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper,
uint32_t fb_width, uint32_t fb_height);
void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,