From: Thara Gopinath <thara@ti.com>
Date: Wed, 31 Mar 2010 10:16:29 +0000 (-0600)
Subject: OMAP: HWMOD: Adding clockdomain check
X-Git-Tag: v2.6.34-rc6~26^2~28^2~3
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d5647c18eac9a313a89a3049a9fff51b20021a44;p=platform%2Fkernel%2Flinux-stable.git

OMAP: HWMOD: Adding clockdomain check

This patch adds check for presence of clockdomain structure in the API
omap_hwmod_get_pwrdm before trying to access the powerdomain structure.
This will prevent unnecessary crashing of the system in case of a
clock node with out an associated clockdomain.

Signed-off-by: Thara Gopinath <thara@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
---

diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index c664947..e436dcb 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -1511,6 +1511,9 @@ struct powerdomain *omap_hwmod_get_pwrdm(struct omap_hwmod *oh)
 		c = oh->slaves[oh->_mpu_port_index]->_clk;
 	}
 
+	if (!c->clkdm)
+		return NULL;
+
 	return c->clkdm->pwrdm.ptr;
 
 }