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Xtensa port: Set Swap function result to -EAGAIN.

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Change-Id: I70a651012d5da873c98f6b13ada5e80e67e18e0c
Signed-off-by: Mazen NEIFER <mazen@nestwave.com>
This commit is contained in:
Mazen NEIFER 2017-02-05 11:51:26 +01:00 • committed by Andrew Boie
commit 884005673c
1 changed files with 6 additions and 0 deletions
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6
arch/xtensa/core/swap.S
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@ -59,6 +59,12 @@ _Swap:
s32i a3, sp, XT_SOL_exit /* 0 to flag as solicited frame */
s32i sp, a4, THREAD_OFFSET(sp) /* current->arch.topOfStack := sp */
/*
* Set _Swap()'s default return code to -EAGAIN. This eliminates the
* need for the timeout code to set it itself.
*/
movi a3, -11 /* a3 := -EAGAIN. TODO: Use a macro here insted of 11 */
s32i a3, a4, THREAD_OFFSET(retval) /* current->arch.retval := -EAGAIN */
#if XCHAL_CP_NUM > 0
/* Clear CPENABLE, also in task's co-processor state save area. */