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From: ira.weiny@intel.com
To: David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
	Patrik Jakobsson <patrik.r.jakobsson@gmail.com>,
	Rob Clark <robdclark@gmail.com>, Sean Paul <sean@poorly.run>
Cc: Ira Weiny <ira.weiny@intel.com>,
	amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
	linux-kernel@vger.kernel.org, intel-gfx@lists.freedesktop.org,
	linux-arm-msm@vger.kernel.org
Subject: [PATCH 3/7] drm/gma: Remove calls to kmap()
Date: Fri, 10 Dec 2021 15:24:00 -0800	[thread overview]
Message-ID: <20211210232404.4098157-4-ira.weiny@intel.com> (raw)
In-Reply-To: <20211210232404.4098157-1-ira.weiny@intel.com>

From: Ira Weiny <ira.weiny@intel.com>

kmap() is being deprecated and these instances are easy to convert to
kmap_local_page().

Furthermore, in gma_crtc_cursor_set() use the memcpy_from_page() helper
instead of an open coded use of kmap_local_page().

Signed-off-by: Ira Weiny <ira.weiny@intel.com>
---
 drivers/gpu/drm/gma500/gma_display.c | 6 ++----
 drivers/gpu/drm/gma500/mmu.c         | 8 ++++----
 2 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/gma500/gma_display.c b/drivers/gpu/drm/gma500/gma_display.c
index cbcecbaa041b..caf7c7b321a9 100644
--- a/drivers/gpu/drm/gma500/gma_display.c
+++ b/drivers/gpu/drm/gma500/gma_display.c
@@ -334,7 +334,7 @@ int gma_crtc_cursor_set(struct drm_crtc *crtc,
 	struct gtt_range *gt;
 	struct gtt_range *cursor_gt = gma_crtc->cursor_gt;
 	struct drm_gem_object *obj;
-	void *tmp_dst, *tmp_src;
+	void *tmp_dst;
 	int ret = 0, i, cursor_pages;
 
 	/* If we didn't get a handle then turn the cursor off */
@@ -400,9 +400,7 @@ int gma_crtc_cursor_set(struct drm_crtc *crtc,
 		/* Copy the cursor to cursor mem */
 		tmp_dst = dev_priv->vram_addr + cursor_gt->offset;
 		for (i = 0; i < cursor_pages; i++) {
-			tmp_src = kmap(gt->pages[i]);
-			memcpy(tmp_dst, tmp_src, PAGE_SIZE);
-			kunmap(gt->pages[i]);
+			memcpy_from_page(tmp_dst, gt->pages[i], 0, PAGE_SIZE);
 			tmp_dst += PAGE_SIZE;
 		}
 
diff --git a/drivers/gpu/drm/gma500/mmu.c b/drivers/gpu/drm/gma500/mmu.c
index fe9ace2a7967..a70b01ccdf70 100644
--- a/drivers/gpu/drm/gma500/mmu.c
+++ b/drivers/gpu/drm/gma500/mmu.c
@@ -184,17 +184,17 @@ struct psb_mmu_pd *psb_mmu_alloc_pd(struct psb_mmu_driver *driver,
 		pd->invalid_pte = 0;
 	}
 
-	v = kmap(pd->dummy_pt);
+	v = kmap_local_page(pd->dummy_pt);
 	for (i = 0; i < (PAGE_SIZE / sizeof(uint32_t)); ++i)
 		v[i] = pd->invalid_pte;
 
-	kunmap(pd->dummy_pt);
+	kunmap_local(v);
 
-	v = kmap(pd->p);
+	v = kmap_local_page(pd->p);
 	for (i = 0; i < (PAGE_SIZE / sizeof(uint32_t)); ++i)
 		v[i] = pd->invalid_pde;
 
-	kunmap(pd->p);
+	kunmap_local(v);
 
 	clear_page(kmap(pd->dummy_page));
 	kunmap(pd->dummy_page);
-- 
2.31.1


  parent reply	other threads:[~2021-12-10 23:24 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-12-10 23:23 [PATCH 0/7] DRM kmap() fixes and kmap_local_page() conversions ira.weiny
2021-12-10 23:23 ` [PATCH 1/7] drm/i915: Replace kmap() with kmap_local_page() ira.weiny
2021-12-13  9:04   ` Christoph Hellwig
2021-12-13 16:02     ` Ira Weiny
2021-12-13 12:39   ` Ville Syrjälä
2021-12-13 15:45     ` Ira Weiny
2021-12-22  6:08   ` [PATCH V2] " ira.weiny
2021-12-10 23:23 ` [PATCH 2/7] drm/amd: " ira.weiny
2021-12-10 23:24 ` ira.weiny [this message]
2021-12-10 23:24 ` [PATCH 4/7] drm/radeon: " ira.weiny
2021-12-10 23:24 ` [PATCH 5/7] drm/msm: Alter comment to use kmap_local_page() ira.weiny
2021-12-10 23:24 ` [PATCH 6/7] drm/amdgpu: Ensure kunmap is called on error ira.weiny
2021-12-13 20:37   ` Christian König
2021-12-14  3:37     ` Ira Weiny
2021-12-14  7:09       ` Christian König
2021-12-15 21:09         ` Ira Weiny
2021-12-16  8:32           ` Christian König
2021-12-10 23:24 ` [PATCH 7/7] drm/radeon: " ira.weiny
2022-01-19 16:53 ` [PATCH 0/7] DRM kmap() fixes and kmap_local_page() conversions Ira Weiny
2022-01-19 17:24   ` Daniel Vetter
2022-01-19 23:55     ` Ira Weiny
2022-01-20  8:16       ` Christian König
2022-01-20 15:48         ` [Intel-gfx] " Daniel Vetter
2022-01-20 16:57           ` Ira Weiny

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