drm/panfrost: Remove incorrect IS_ERR() check

sg_page_iter_page() doesn't return an error code, so the IS_ERR() check
is wrong and the error path will never be executed. This also allows
simplifying the code to remove the local variable 'page'.

CC: Adrián Larumbe <adrian.larumbe@collabora.com>
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/r/376713ff-9a4f-4ea3-b097-fb5efb685d95@moroto.mountain
Signed-off-by: Steven Price <steven.price@arm.com>
Reviewed-by: Adrián Larumbe <adrian.larumbe@collabora.com>
Tested-by: Adrián Larumbe <adrian.larumbe@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231020104405.53992-1-steven.price@arm.com

diff --git a/drivers/gpu/drm/panfrost/panfrost_dump.c b/drivers/gpu/drm/panfrost/panfrost_dump.c
index e7942ac449c68cb5dedfade6ec5cbdbfd9093767..47751302f1bc95c1e2618f547243a7b9f1ebde47 100644 (file)
--- a/drivers/gpu/drm/panfrost/panfrost_dump.c
+++ b/drivers/gpu/drm/panfrost/panfrost_dump.c
@@ -220,16 +220,8 @@ void panfrost_core_dump(struct panfrost_job *job)
 
                iter.hdr->bomap.data[0] = bomap - bomap_start;
 
-               for_each_sgtable_page(bo->base.sgt, &page_iter, 0) {
-                       struct page *page = sg_page_iter_page(&page_iter);
-
-                       if (!IS_ERR(page)) {
-                               *bomap++ = page_to_phys(page);
-                       } else {
-                               dev_err(pfdev->dev, "Panfrost Dump: wrong page\n");
-                               *bomap++ = 0;
-                       }
-               }
+               for_each_sgtable_page(bo->base.sgt, &page_iter, 0)
+                       *bomap++ = page_to_phys(sg_page_iter_page(&page_iter));
 
                iter.hdr->bomap.iova = mapping->mmnode.start << PAGE_SHIFT;