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runtime/mailbox: fix mailbox_acknowledged for first message

This commit is contained in:
Sebastien Bourdeauducq 2015-04-28 16:51:55 +08:00
parent 53055a045d
commit 1ce41d567c
1 changed files with 4 additions and 1 deletions
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5
soc/runtime/mailbox.c
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@ -51,7 +51,10 @@ void mailbox_send(void *ptr)
int mailbox_acknowledged(void) int mailbox_acknowledged(void)
{ {
return KERNELCPU_MAILBOX != last_transmission; unsigned int m;
m = KERNELCPU_MAILBOX;
return !m || (m != last_transmission);
} }
void mailbox_send_and_wait(void *ptr) void mailbox_send_and_wait(void *ptr)