fbdev: sh_mobile_hdmi: Don't access LCDC channel in notifier callback
Instead of relying on info->par being a pointer to an LCDC channel, cast
the notifier block pointer to an sh_hdmi pointer.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
diff --git a/drivers/video/sh_mobile_hdmi.c b/drivers/video/sh_mobile_hdmi.c
index 647ba98..a77bbc3 100644
--- a/drivers/video/sh_mobile_hdmi.c
+++ b/drivers/video/sh_mobile_hdmi.c
@@ -225,6 +225,8 @@
struct notifier_block notifier;
};
+#define notifier_to_hdmi(n) container_of(n, struct sh_hdmi, notifier)
+
static void hdmi_write(struct sh_hdmi *hdmi, u8 data, u8 reg)
{
iowrite8(data, hdmi->base + reg);
@@ -1204,11 +1206,9 @@
{
struct fb_event *event = data;
struct fb_info *info = event->info;
- struct sh_mobile_lcdc_chan *ch = info->par;
- struct sh_mobile_lcdc_board_cfg *board_cfg = &ch->cfg.board_cfg;
- struct sh_hdmi *hdmi = board_cfg->board_data;
+ struct sh_hdmi *hdmi = notifier_to_hdmi(nb);
- if (!hdmi || nb != &hdmi->notifier || hdmi->info != info)
+ if (hdmi->info != info)
return NOTIFY_DONE;
switch(action) {