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imx-common: rdc-sema: correct return value

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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>
This commit is contained in:
Peng Fan 2017-04-21 16:56:50 +08:00 committed by Stefano Babic
parent a267d3accd
commit ca10aa7561
1 changed files with 1 additions and 1 deletions
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2
arch/arm/imx-common/rdc-sema.c
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@ -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]);