commit d8f75024e5e03ed111a9cc06f8a8216cdd219d38
author Tomi Valkeinen <tomi.valkeinen@ti.com> Wed Oct 12 10:13:14 2011 +0300
committer Charles M. Hannum <root@ihack.net> Fri May 09 19:19:04 2014 +0200
tree a7433de9a5fff5e2029c04f59623284b5d187d83
parent a27710aa0746cc997ba1aacdb7046b8beea8ccdf

OMAPDSS: DSI: flush posted write in send_bta

Flush posted write after setting the bit to send the BTA to ensure the
BTA is sent right away, as the code in dsi_vc_send_bta_sync() waits for
an interrupt caused indirectly by sending the BTA.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

drivers/video/omap2/dss/dsi.c

diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c
index ee3be27..e23e3c8 100644
--- a/drivers/video/omap2/dss/dsi.c
+++ b/drivers/video/omap2/dss/dsi.c
@@ -2976,6 +2976,9 @@
 
 	REG_FLD_MOD(dsidev, DSI_VC_CTRL(channel), 1, 6, 6); /* BTA_EN */
 
+	/* flush posted write */
+	dsi_read_reg(dsidev, DSI_VC_CTRL(channel));
+
 	return 0;
 }