From: Tero Kristo <t-kristo@ti.com>
Date: Fri, 12 Jul 2013 09:26:41 +0000 (+0300)
Subject: ARM: OMAP: hwmod: fix an incorrect clk type cast with _get_clkdm
X-Git-Tag: v3.14-rc1~68^2~15
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=924f9498acb004d8cb704a008f1060fad604ccca;p=karo-tx-linux.git

ARM: OMAP: hwmod: fix an incorrect clk type cast with _get_clkdm

If the main clock for a hwmod is of basic clock type, it is illegal to type
cast this to clk_hw_omap and will result in bogus data. Fixed by checking
the clock flags before attempting the type cast.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Tested-by: Nishanth Menon <nm@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
---

diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index 8a1b5e0bad40..cc24c95b77e5 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -686,6 +686,8 @@ static struct clockdomain *_get_clkdm(struct omap_hwmod *oh)
 	if (oh->clkdm) {
 		return oh->clkdm;
 	} else if (oh->_clk) {
+		if (__clk_get_flags(oh->_clk) & CLK_IS_BASIC)
+			return NULL;
 		clk = to_clk_hw_omap(__clk_get_hw(oh->_clk));
 		return  clk->clkdm;
 	}