linux-kernel - [PATCH 1/1] drm/i915: remove unused IO_TLB_SEGPAGES which should be defined by swiotlb

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Date:   Tue, 21 May 2019 12:40:39 +0800
From:   Dongli Zhang <dongli.zhang@...cle.com>
To:     intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org
Cc:     linux-kernel@...r.kernel.org, jani.nikula@...ux.intel.com,
        joonas.lahtinen@...ux.intel.com, rodrigo.vivi@...el.com,
        airlied@...ux.ie, daniel@...ll.ch, dongli.zhang@...cle.com
Subject: [PATCH 1/1] drm/i915: remove unused IO_TLB_SEGPAGES which should be defined by swiotlb

This patch removes IO_TLB_SEGPAGES which is no longer used since
commit 5584f1b1d73e ("drm/i915: fix i915 running as dom0 under Xen").

As the define of both IO_TLB_SEGSIZE and IO_TLB_SHIFT are from swiotlb,
IO_TLB_SEGPAGES should be defined on swiotlb side if it is required in the
future.

Signed-off-by: Dongli Zhang <dongli.zhang@...cle.com>
---
 drivers/gpu/drm/i915/i915_gem_internal.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem_internal.c b/drivers/gpu/drm/i915/i915_gem_internal.c
index ab627ed..2166217 100644
--- a/drivers/gpu/drm/i915/i915_gem_internal.c
+++ b/drivers/gpu/drm/i915/i915_gem_internal.c
@@ -28,9 +28,6 @@
 #define QUIET (__GFP_NORETRY | __GFP_NOWARN)
 #define MAYFAIL (__GFP_RETRY_MAYFAIL | __GFP_NOWARN)
 
-/* convert swiotlb segment size into sensible units (pages)! */
-#define IO_TLB_SEGPAGES (IO_TLB_SEGSIZE << IO_TLB_SHIFT >> PAGE_SHIFT)
-
 static void internal_free_pages(struct sg_table *st)
 {
 	struct scatterlist *sg;
-- 
2.7.4