From 21bc1f024d0d4ea43fc0f2a43504e759261c7b18 Mon Sep 17 00:00:00 2001 From: Magnus Damm Date: Sat, 15 Aug 2009 02:53:16 +0000 Subject: [PATCH] sh: skip disabled LCDC channels This patch updates the SuperH Mobile LCDC driver to skip over disabled channels. Without this patch suspend-to-ram operation will crash if deferred io is enabled. Signed-off-by: Magnus Damm Signed-off-by: Paul Mundt --- drivers/video/sh_mobile_lcdcfb.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/video/sh_mobile_lcdcfb.c b/drivers/video/sh_mobile_lcdcfb.c index 8f24564..07f22b6 100644 --- a/drivers/video/sh_mobile_lcdcfb.c +++ b/drivers/video/sh_mobile_lcdcfb.c @@ -481,6 +481,9 @@ static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv) /* tell the board code to enable the panel */ for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { ch = &priv->ch[k]; + if (!ch->enabled) + continue; + board_cfg = &ch->cfg.board_cfg; if (board_cfg->display_on) board_cfg->display_on(board_cfg->board_data); @@ -498,6 +501,8 @@ static void sh_mobile_lcdc_stop(struct sh_mobile_lcdc_priv *priv) /* clean up deferred io and ask board code to disable panel */ for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { ch = &priv->ch[k]; + if (!ch->enabled) + continue; /* deferred io mode: * flush frame, and wait for frame end interrupt -- 2.7.4