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authorDominik Sliwa <dominik.sliwa@toradex.com>2016-07-15 11:44:36 +0200
committerMarcel Ziswiler <marcel.ziswiler@toradex.com>2016-09-29 06:48:40 +0200
commitd20d9941202fa728df9260d2c812a6444afa4821 (patch)
tree931d78bc1880dc3e7bf78cf5c65200aadbc0d332
parentbe10973d1498e39431e82ad2a70f19a7872cd4b6 (diff)
tegra: Fix unsupported HDMI screen crash
Connecting unsuported screen to HDMI resulted in kernel panic. Signed-off-by: Dominik Sliwa <dominik.sliwa@toradex.com> Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
-rw-r--r--drivers/video/tegra/fb.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/video/tegra/fb.c b/drivers/video/tegra/fb.c
index d0e7809cd83d..e3fae09106af 100644
--- a/drivers/video/tegra/fb.c
+++ b/drivers/video/tegra/fb.c
@@ -556,6 +556,11 @@ void tegra_fb_update_monspecs(struct tegra_fb_info *fb_info,
tegra_fb_find_best_mode(&var, &info->modelist);
}
+ /* Fail if no supported modes were found */
+ if (info->mode == NULL) {
+ dev_warn(&fb_info->ndev->dev, "Display %s not supported\n", specs->monitor);
+ return;
+ }
/* Prepare fb info with new mode details */
fb_videomode_to_var(&info->var, info->mode);
event.info = fb_info->info;