linux-kernel - [PATCH 2/2] crypto: caam - Fix opencoded cpumask_next_wrap() in caam_drv_ctx

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <20250604204742.21183-3-yury.norov@gmail.com>
Date: Wed,  4 Jun 2025 16:47:41 -0400
From: Yury Norov <yury.norov@...il.com>
To: linux-kernel@...r.kernel.org,
	linux-crypto@...r.kernel.org,
	Steffen Klassert <steffen.klassert@...unet.com>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	"David S. Miller" <davem@...emloft.net>,
	Horia Geantă <horia.geanta@....com>,
	Pankaj Gupta <pankaj.gupta@....com>,
	Gaurav Jain <gaurav.jain@....com>
Cc: "Yury Norov [NVIDIA]" <yury.norov@...il.com>
Subject: [PATCH 2/2] crypto: caam - Fix opencoded cpumask_next_wrap() in caam_drv_ctx_init()

From: Yury Norov [NVIDIA] <yury.norov@...il.com>

The dedicated cpumask_next_wrap() is more verbose and better optimized
comparing to cpumask_next() followed by cpumask_first().

Signed-off-by: Yury Norov [NVIDIA] <yury.norov@...il.com>
---
 drivers/crypto/caam/qi.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/crypto/caam/qi.c b/drivers/crypto/caam/qi.c
index b6e7c0b29d4e..1e731ed8702b 100644
--- a/drivers/crypto/caam/qi.c
+++ b/drivers/crypto/caam/qi.c
@@ -442,11 +442,8 @@ struct caam_drv_ctx *caam_drv_ctx_init(struct device *qidev,
 	if (!cpumask_test_cpu(*cpu, cpus)) {
 		int *pcpu = &get_cpu_var(last_cpu);
 
-		*pcpu = cpumask_next(*pcpu, cpus);
-		if (*pcpu >= nr_cpu_ids)
-			*pcpu = cpumask_first(cpus);
+		*pcpu = cpumask_next_wrap(*pcpu, cpus);
 		*cpu = *pcpu;
-
 		put_cpu_var(last_cpu);
 	}
 	drv_ctx->cpu = *cpu;
-- 
2.43.0