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ocxl: Fix missing unlock on error in afu_ioctl_enable_p9_wait() 

Add the missing unlock before return from function
afu_ioctl_enable_p9_wait() in the error handling case.

Fixes: e948e06fc6 ("ocxl: Expose the thread_id needed for wait on POWER9")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Alastair D'Silva <alastair@d-silva.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Wei Yongjun 2018-06-05 09:16:21 +00:00 committed by Michael Ellerman
parent b0c4acb1dd
commit 2e5c93d6bb
1 changed files with 3 additions and 1 deletions
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4
drivers/misc/ocxl/file.c
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@ -139,8 +139,10 @@ static long afu_ioctl_enable_p9_wait(struct ocxl_context *ctx,
// Locks both status & tidr
mutex_lock(&ctx->status_mutex);
if (!ctx->tidr) {
if (set_thread_tidr(current))
if (set_thread_tidr(current)) {
mutex_unlock(&ctx->status_mutex);
return -ENOENT;
}
ctx->tidr = current->thread.tidr;
}