iommu/sun50i: Use __GFP_ZERO instead of memset()

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

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Cc: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20200514124621.25999-2-joro@8bytes.org

diff --git a/drivers/iommu/sun50i-iommu.c b/drivers/iommu/sun50i-iommu.c
index a52f52e..9c763d4 100644 (file)
--- 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);