[PATCH 2/2] iommu/sun50i: Use __GFP_ZERO instead of memset()

Joerg Roedel joro at 8bytes.org
Thu May 14 12:46:21 UTC 2020


From: Joerg Roedel <jroedel at suse.de>

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

Cc: Maxime Ripard <maxime at cerno.tech>
Signed-off-by: Joerg Roedel <jroedel at suse.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



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