linux-kernel - [PATCH] ARM: OMAP2: Fix up interconnect barrier initialization for DRA7

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Date:	Fri, 11 Mar 2016 10:12:28 -0600
From:	Nishanth Menon <nm@...com>
To:	Russell King <linux@....linux.org.uk>,
	Tony Lindgren <tony@...mide.com>
CC:	<linux-kernel@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	Tomi Valkeinen <tomi.valkeinen@...com>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Nishanth Menon <nm@...com>,
	Russell King <rmk+kernel@....linux.org.uk>
Subject: [PATCH] ARM: OMAP2: Fix up interconnect barrier initialization for DRA7

The following commits:
commit 3fa609755c11 ("ARM: omap2: restore OMAP4 barrier behaviour")
commit f746929ffdc8 ("Revert "ARM: OMAP4: remove dead kconfig option OMAP4_ERRATA_I688"")
and
commit ea827ad5ffbb ("ARM: DRA7: Provide proper IO map table")
came in around the same time, unfortunately this seem to have missed
initializing the barrier for DRA7 platforms - omap5_map_io was reused
for dra7 till it was split out by the last patch. barrier_init
needs to be hence carried forward as it is valid for DRA7 family of
processors as they are for OMAP5.

Fixes: ea827ad5ffbb7 ("ARM: DRA7: Provide proper IO map table")
Reported-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Reported-by: Tomi Valkeinen <tomi.valkeinen@...com>
Cc: Russell King <rmk+kernel@....linux.org.uk>
Signed-off-by: Nishanth Menon <nm@...com>
---

Original thread of report: http://www.spinics.net/lists/dri-devel/msg101246.html

 arch/arm/mach-omap2/io.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
index 3c87e40650cf..9821be6dfd5e 100644
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -368,6 +368,7 @@ void __init omap5_map_io(void)
 void __init dra7xx_map_io(void)
 {
 	iotable_init(dra7xx_io_desc, ARRAY_SIZE(dra7xx_io_desc));
+	omap_barriers_init();
 }
 #endif
 /*
-- 
2.7.0