From ed1aa9003bc359a3139cbd6c31eb834fa71b26d9 Mon Sep 17 00:00:00 2001 From: Archit Taneja Date: Wed, 15 Aug 2012 00:40:31 +0530 Subject: [PATCH] OMAPDSS: HDMI: Add locking for hdmi interface set timing functions The hdmi interface driver exposes functions to the hdmi panel driver to configure the interface timings maintained by the hdmi driver. These timings(stored in hdmi.ip_data.cfg) should be protected by the hdmi lock to ensure they are called sequentially, this is similar to how hdmi enable and disable functions need locking. Signed-off-by: Archit Taneja --- drivers/video/omap2/dss/hdmi.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/video/omap2/dss/hdmi.c b/drivers/video/omap2/dss/hdmi.c index 964a19500c0e..0cdf24673d48 100644 --- a/drivers/video/omap2/dss/hdmi.c +++ b/drivers/video/omap2/dss/hdmi.c @@ -561,6 +561,8 @@ void omapdss_hdmi_display_set_timing(struct omap_dss_device *dssdev, struct hdmi_cm cm; const struct hdmi_config *t; + mutex_lock(&hdmi.lock); + cm = hdmi_get_code(timings); hdmi.ip_data.cfg.cm = cm; @@ -579,6 +581,8 @@ void omapdss_hdmi_display_set_timing(struct omap_dss_device *dssdev, } else { dss_mgr_set_timings(dssdev->manager, &t->timings); } + + mutex_unlock(&hdmi.lock); } static void hdmi_dump_regs(struct seq_file *s) -- 2.34.1