@@ -504,14 +504,6 @@ static void drm_fb_helper_dpms(struct fb_info *info, int dpms_mode)
int i, j;
/*
- * fbdev->blank can be called from irq context in case of a panic.
- * Since we already have our own special panic handler which will
- * restore the fbdev console mode completely, just bail out early.
- */
- if (oops_in_progress)
- return;
-
- /*
* For each CRTC in this fb, turn the connectors on/off.
*/
drm_modeset_lock_all(dev);
@@ -544,6 +536,9 @@ static void drm_fb_helper_dpms(struct fb_info *info, int dpms_mode)
*/
int drm_fb_helper_blank(int blank, struct fb_info *info)
{
+ if (oops_in_progress)
+ return -EBUSY;
+
switch (blank) {
/* Display: On; HSync: On, VSync: On */
case FB_BLANK_UNBLANK:
@@ -771,9 +766,10 @@ int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info)
int i, j, rc = 0;
int start;
- if (__drm_modeset_lock_all(dev, !!oops_in_progress)) {
+ if (oops_in_progress)
return -EBUSY;
- }
+
+ drm_modeset_lock_all(dev);
if (!drm_fb_helper_is_bound(fb_helper)) {
drm_modeset_unlock_all(dev);
return -EBUSY;
@@ -922,6 +918,9 @@ int drm_fb_helper_set_par(struct fb_info *info)
struct drm_fb_helper *fb_helper = info->par;
struct fb_var_screeninfo *var = &info->var;
+ if (oops_in_progress)
+ return -EBUSY;
+
if (var->pixclock != 0) {
DRM_ERROR("PIXEL CLOCK SET\n");
return -EINVAL;
@@ -947,9 +946,10 @@ int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
int ret = 0;
int i;
- if (__drm_modeset_lock_all(dev, !!oops_in_progress)) {
+ if (oops_in_progress)
return -EBUSY;
- }
+
+ drm_modeset_lock_all(dev);
if (!drm_fb_helper_is_bound(fb_helper)) {
drm_modeset_unlock_all(dev);
return -EBUSY;
@@ -55,13 +55,6 @@ static int intel_fbdev_set_par(struct fb_info *info)
ret = drm_fb_helper_set_par(info);
if (ret == 0) {
- /*
- * FIXME: fbdev presumes that all callbacks also work from
- * atomic contexts and relies on that for emergency oops
- * printing. KMS totally doesn't do that and the locking here is
- * by far not the only place this goes wrong. Ignore this for
- * now until we solve this for real.
- */
mutex_lock(&fb_helper->dev->struct_mutex);
ret = i915_gem_object_set_to_gtt_domain(ifbdev->fb->obj,
true);