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ANDROID: binder: correct the cmd print for BINDER_WORK_RETURN_ERROR 

When to execute binder_stat_br the e->cmd has been modifying as BR_OK
instead of the original return error cmd, in fact we want to know the
original return error, such as BR_DEAD_REPLY or BR_FAILED_REPLY, etc.
instead of always BR_OK, in order to avoid the value of the e->cmd is
always BR_OK, so we need assign the value of the e->cmd to cmd before
e->cmd = BR_OK.

Signed-off-by: songjinshi <songjinshi@xiaomi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
hifive-unleashed-5.1
宋金时 2018-05-10 02:05:03 +00:00 committed by Greg Kroah-Hartman
parent 1190b4e38f
commit 838d556566
1 changed files with 2 additions and 1 deletions
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3
drivers/android/binder.c
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@ -3921,10 +3921,11 @@ retry:
binder_inner_proc_unlock(proc);
if (put_user(e->cmd, (uint32_t __user *)ptr))
return -EFAULT;
cmd = e->cmd;
e->cmd = BR_OK;
ptr += sizeof(uint32_t);
binder_stat_br(proc, thread, e->cmd);
binder_stat_br(proc, thread, cmd);
} break;
case BINDER_WORK_TRANSACTION_COMPLETE: {
binder_inner_proc_unlock(proc);