linux-kernel - [PATCH 4.5 011/200] ARM: OMAP2: Fix up interconnect barrier initialization for DRA7

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Date:	Mon,  2 May 2016 17:10:10 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Tomi Valkeinen <tomi.valkeinen@...com>,
	Russell King <rmk+kernel@....linux.org.uk>,
	Nishanth Menon <nm@...com>, Tony Lindgren <tony@...mide.com>
Subject: [PATCH 4.5 011/200] ARM: OMAP2: Fix up interconnect barrier initialization for DRA7

4.5-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Nishanth Menon <nm@...com>

commit 456e8d53482537616899a146b706eccd095404e6 upstream.

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>
Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Signed-off-by: Tony Lindgren <tony@...mide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

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

--- 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
 /*