linux-kernel - [PATCH 2/2] iommu/sun50i: Use __GFP

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: <20200514124621.25999-2-joro@8bytes.org>
Date:   Thu, 14 May 2020 14:46:21 +0200
From:   Joerg Roedel <joro@...tes.org>
To:     Maxime Ripard <mripard@...nel.org>
Cc:     Chen-Yu Tsai <wens@...e.org>, iommu@...ts.linux-foundation.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        joro@...tes.org, jroedel@...e.de, Maxime Ripard <maxime@...no.tech>
Subject: [PATCH 2/2] iommu/sun50i: Use __GFP_ZERO instead of memset()

From: Joerg Roedel <jroedel@...e.de>

Allocate zeroed memory so there is no need to memset it to 0 in the
driver.

Cc: Maxime Ripard <maxime@...no.tech>
Signed-off-by: Joerg Roedel <jroedel@...e.de>
---
 drivers/iommu/sun50i-iommu.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/iommu/sun50i-iommu.c b/drivers/iommu/sun50i-iommu.c
index a52f52eff7c8..9c763d4a8e2a 100644
--- a/drivers/iommu/sun50i-iommu.c
+++ b/drivers/iommu/sun50i-iommu.c
@@ -616,11 +616,10 @@ static struct iommu_domain *sun50i_iommu_domain_alloc(unsigned type)
 	    iommu_get_dma_cookie(&sun50i_domain->domain))
 		goto err_free_domain;
 
-	sun50i_domain->dt = (u32 *)__get_free_pages(GFP_KERNEL,
+	sun50i_domain->dt = (u32 *)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
 						    get_order(DT_SIZE));
 	if (!sun50i_domain->dt)
 		goto err_put_cookie;
-	memset(sun50i_domain->dt, 0, DT_SIZE);
 
 	refcount_set(&sun50i_domain->refcnt, 1);
 
-- 
2.17.1