imx-common: rdc-sema: correct return value

When unlock, if caller is not the sema owner,
return -EACCES, not 1.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>

diff --git a/arch/arm/imx-common/rdc-sema.c b/arch/arm/imx-common/rdc-sema.c
index 5df4e02b53bda46c02aebd2696ac0b39c695e848..1d97ac8e7fdb7b8c51e5b231ba779de7cac7ba44 100644 (file)
--- a/arch/arm/imx-common/rdc-sema.c
+++ b/arch/arm/imx-common/rdc-sema.c
@@ -94,7 +94,7 @@ int imx_rdc_sema_unlock(int per_id)
 
        reg = readb(&imx_rdc_sema->gate[per_id % SEMA_GATES_NUM]);
        if ((reg & RDC_SEMA_GATE_GTFSM_MASK) != RDC_SEMA_PROC_ID)
-               return 1;       /*Not the semaphore owner */
+               return -EACCES; /*Not the semaphore owner */
 
        writeb(0x0, &imx_rdc_sema->gate[per_id % SEMA_GATES_NUM]);