opp_get_opp_id should handle the error cases that might hit it. check
parameters before using it

Signed-off-by: Nishanth Menon <[email protected]>

Cc: Eduardo Valentin <[email protected]>
Cc: Jouni Hogander <[email protected]>
Cc: Kevin Hilman <[email protected]>
Cc: Paul Walmsley <[email protected]>
Cc: Rajendra Nayak <[email protected]>
Cc: Sanjeev Premi <[email protected]>
Cc: Tero Kristo <[email protected]>
Cc: Tony Lindgren <[email protected]>
Cc: Vishwanath BS <[email protected]>
---
Note: even though this is a deprecated function, it should be robust

 arch/arm/plat-omap/opp.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/arch/arm/plat-omap/opp.c b/arch/arm/plat-omap/opp.c
index 229960d..0b61325 100644
--- a/arch/arm/plat-omap/opp.c
+++ b/arch/arm/plat-omap/opp.c
@@ -101,6 +101,10 @@ struct omap_opp * __deprecated opp_find_by_opp_id(enum 
opp_t opp_type,
 
 u8 __deprecated opp_get_opp_id(struct omap_opp *opp)
 {
+       if (unlikely(!opp || IS_ERR(opp)) || !opp->enabled) {
+               pr_err("%s: Invalid parameter being passed\n", __func__);
+               return 0;
+       }
        return opp->opp_id;
 }
 
-- 
1.6.3.3

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