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 <archit@ti.com>
diff --git a/drivers/video/omap2/dss/hdmi.c b/drivers/video/omap2/dss/hdmi.c
index 964a195..0cdf246 100644
--- a/drivers/video/omap2/dss/hdmi.c
+++ b/drivers/video/omap2/dss/hdmi.c
@@ -561,6 +561,8 @@
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 @@
} else {
dss_mgr_set_timings(dssdev->manager, &t->timings);
}
+
+ mutex_unlock(&hdmi.lock);
}
static void hdmi_dump_regs(struct seq_file *s)