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video: deferred io cleanup fix for sh_mobile_lcdcfb
Fix deferred io cleanup patch in the sh_mobile_lcdcfb driver. If probe() fails early the sh_mobile_lcdc_stop() function will be called to clean up deferred io. This patch modifies the code to only call fb_deferred_io_cleanup() after deferred io has been initialized. With this patch applied we no longer hit BUG_ON() inside fb_deferred_io_cleanup(). Triggers on a Migo-R with the SYS QVGA panel board unmounted. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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1 changed files with 2 additions and 4 deletions
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@ -446,7 +446,6 @@ static void sh_mobile_lcdc_stop(struct sh_mobile_lcdc_priv *priv)
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{
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struct sh_mobile_lcdc_chan *ch;
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struct sh_mobile_lcdc_board_cfg *board_cfg;
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unsigned long tmp;
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int k;
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/* tell the board code to disable the panel */
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@ -456,9 +455,8 @@ static void sh_mobile_lcdc_stop(struct sh_mobile_lcdc_priv *priv)
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if (board_cfg->display_off)
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board_cfg->display_off(board_cfg->board_data);
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/* cleanup deferred io if SYS bus */
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tmp = ch->cfg.sys_bus_cfg.deferred_io_msec;
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if (ch->ldmt1r_value & (1 << 12) && tmp) {
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/* cleanup deferred io if enabled */
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if (ch->info.fbdefio) {
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fb_deferred_io_cleanup(&ch->info);
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ch->info.fbdefio = NULL;
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}
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