imx:mx6 fix return value of mxc_get_clock

mxc_get_clock's return type is unsigned int. 'return -1' is same with
'return 0xffffffff', so 0 should be used as the return value when
unsupported mxc_clock type is passed to mxc_get_clock.

Also include an err message when unsupported mxc_clock type is passed
to mxc_get_clock.

Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>

diff --git a/arch/arm/cpu/armv7/mx6/clock.c b/arch/arm/cpu/armv7/mx6/clock.c
index 93a02adcec4d843e68196903f891cccaddb566ab..b6983e60d7363fa03752ffd7b821b60e8dd917c1 100644 (file)
--- a/arch/arm/cpu/armv7/mx6/clock.c
+++ b/arch/arm/cpu/armv7/mx6/clock.c
@@ -746,10 +746,11 @@ unsigned int mxc_get_clock(enum mxc_clock clk)
        case MXC_SATA_CLK:
                return get_ahb_clk();
        default:
+               printf("Unsupported MXC CLK: %d\n", clk);
                break;
        }
 
-       return -1;
+       return 0;
 }
 
 /*