OMAP3+: VP: update_errorgain(): return error if VP

Add check for valid VP in omap_vp_update_errorgain()

Signed-off-by: Kevin Hilman <khilman@ti.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/vp.c b/arch/arm/mach-omap2/vp.c
index 38076205312e..29698acc2aea 100644
--- a/arch/arm/mach-omap2/vp.c
+++ b/arch/arm/mach-omap2/vp.c
@@ -103,6 +103,9 @@ int omap_vp_update_errorgain(struct voltagedomain *voltdm,
 {
         struct omap_volt_data *volt_data;
 
+        if (!voltdm->vp)
+                return -EINVAL;
+
         /* Get volt_data corresponding to target_volt */
         volt_data = omap_voltage_get_voltdata(voltdm, target_volt);
         if (IS_ERR(volt_data))