[PATCH v4 3/3] OMAP2+: voltage: add check for missing PMIC info in vp init

[Abhilash K V]

If PMIC info is not available in omap_vp_init(), abort.

Signed-off-by: Abhilash K V <abhilash.kv at ti.com>
---
 arch/arm/mach-omap2/vp.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-omap2/vp.c b/arch/arm/mach-omap2/vp.c
index 66bd700..2c99837 100644
--- a/arch/arm/mach-omap2/vp.c
+++ b/arch/arm/mach-omap2/vp.c
@@ -41,6 +41,13 @@ void __init omap_vp_init(struct voltagedomain *voltdm)
 	u32 val, sys_clk_rate, timeout, waittime;
 	u32 vddmin, vddmax, vstepmin, vstepmax;
 
+	if (!voltdm->pmic || !voltdm->pmic->uv_to_vsel) {
+		pr_err("%s: PMIC info requried to configure vp for"
+			"vdd_%s not populated.Hence cannot initialize vp\n",
+			__func__, voltdm->name);
+		return;
+	}
+
 	if (!voltdm->read || !voltdm->write) {
 		pr_err("%s: No read/write API for accessing vdd_%s regs\n",
 			__func__, voltdm->name);
-- 
1.7.1