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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 <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Magnus Damm 2009-08-15 02:53:16 +00:00 committed by Paul Mundt
parent 64f1607ffb
commit 21bc1f024d
1 changed files with 5 additions and 0 deletions
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5
drivers/video/sh_mobile_lcdcfb.c
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@ -481,6 +481,9 @@ static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv)
/* tell the board code to enable the panel */ /* tell the board code to enable the panel */
for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
ch = &priv->ch[k]; ch = &priv->ch[k];
if (!ch->enabled)
continue;
board_cfg = &ch->cfg.board_cfg; board_cfg = &ch->cfg.board_cfg;
if (board_cfg->display_on) if (board_cfg->display_on)
board_cfg->display_on(board_cfg->board_data); 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 */ /* clean up deferred io and ask board code to disable panel */
for (k = 0; k < ARRAY_SIZE(priv->ch); k++) { for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
ch = &priv->ch[k]; ch = &priv->ch[k];
if (!ch->enabled)
continue;
/* deferred io mode: /* deferred io mode:
* flush frame, and wait for frame end interrupt * flush frame, and wait for frame end interrupt