[PATCH v2 3/8] OMAP2+: hwmod: Enable module in shutdown to access sysconfig

[Benoit Cousson]

From: Miguel Vadillo <vadillo at ti.com>

When calling the shutdown, the module may be already in idle.
Accessing the sysconfig register will then lead to a crash.
In that case, re-enable the module in order to allow the access
to the sysconfig register.

Signed-off-by: Miguel Vadillo <vadillo at ti.com>
Signed-off-by: Benoit Cousson <b-cousson at ti.com>
Acked-by: Paul Walmsley <paul at pwsan.com>
---
 arch/arm/mach-omap2/omap_hwmod.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index 384d3c3..cbc2a8a 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -1396,8 +1396,11 @@ static int _shutdown(struct omap_hwmod *oh)
 		}
 	}
 
-	if (oh->class->sysc)
+	if (oh->class->sysc) {
+		if (oh->_state == _HWMOD_STATE_IDLE)
+			_enable(oh);
 		_shutdown_sysc(oh);
+	}
 
 	/*
 	 * If an IP contains only one HW reset line, then assert it
-- 
1.7.0.4