From: Geliang Tang <geliangtang@163.com>
Date: Mon, 16 Nov 2015 14:37:15 +0000 (+0800)
Subject: crypto: mcryptd - use list_first_entry_or_null()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=08346170d4483d58b8971fe9ff2a1318fd93d121;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

crypto: mcryptd - use list_first_entry_or_null()

Simplify mcryptd_opportunistic_flush() with list_first_entry_or_null().

Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/crypto/mcryptd.c b/crypto/mcryptd.c
index fe5b495a434d..f78d4fc4e38a 100644
--- a/crypto/mcryptd.c
+++ b/crypto/mcryptd.c
@@ -128,13 +128,9 @@ static void mcryptd_opportunistic_flush(void)
 	flist = per_cpu_ptr(mcryptd_flist, smp_processor_id());
 	while (single_task_running()) {
 		mutex_lock(&flist->lock);
-		if (list_empty(&flist->list)) {
-			mutex_unlock(&flist->lock);
-			return;
-		}
-		cstate = list_entry(flist->list.next,
+		cstate = list_first_entry_or_null(&flist->list,
 				struct mcryptd_alg_cstate, flush_list);
-		if (!cstate->flusher_engaged) {
+		if (!cstate || !cstate->flusher_engaged) {
 			mutex_unlock(&flist->lock);
 			return;
 		}