From: Philipp Zabel <p.zabel@pengutronix.de>
Date: Tue, 15 May 2018 16:09:15 +0200
Subject: drm/etnaviv: mmuv2: use memset32 to init scratch page
Git-commit: 6ae9c84ff249f2756086e71405375fd06124cf1f
Patch-mainline: v4.19-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
Replace the open-coded scratch page initialization loop with memset32
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
--- a/drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_iommu_v2.c
@@ -119,8 +119,7 @@ static size_t etnaviv_iommuv2_unmap(stru
static int etnaviv_iommuv2_init(struct etnaviv_iommuv2_domain *etnaviv_domain)
{
- u32 *p;
- int ret, i;
+ int ret;
/* allocate scratch page */
etnaviv_domain->base.bad_page_cpu =
@@ -131,9 +130,9 @@ static int etnaviv_iommuv2_init(struct e
ret = -ENOMEM;
goto fail_mem;
}
- p = etnaviv_domain->base.bad_page_cpu;
- for (i = 0; i < SZ_4K / 4; i++)
- *p++ = 0xdead55aa;
+
+ memset32(etnaviv_domain->base.bad_page_cpu, 0xdead55aa,
+ SZ_4K / sizeof(u32));
etnaviv_domain->pta_cpu = dma_alloc_wc(etnaviv_domain->base.dev,
SZ_4K, &etnaviv_domain->pta_dma,