drm/radeon: constify radeon_asic_ring structures

The radeon_asic_ring structures are never modified, so declare them as
const.

Done with the help of Coccinelle.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/radeon/radeon.h

@@ -1889,7 +1889,7 @@ struct radeon_asic {
 		void (*pad_ib)(struct radeon_ib *ib);
 	} vm;
 	/* ring specific callbacks */
-	struct radeon_asic_ring *ring[RADEON_NUM_RINGS];
+	const struct radeon_asic_ring *ring[RADEON_NUM_RINGS];
 	/* irqs */
 	struct {
 		int (*set)(struct radeon_device *rdev);

drivers/gpu/drm/radeon/radeon_asic.c

@@ -179,7 +179,7 @@ void radeon_agp_disable(struct radeon_device *rdev)
  * ASIC
  */
 
-static struct radeon_asic_ring r100_gfx_ring = {
+static const struct radeon_asic_ring r100_gfx_ring = {
 	.ib_execute = &r100_ring_ib_execute,
 	.emit_fence = &r100_fence_ring_emit,
 	.emit_semaphore = &r100_semaphore_ring_emit,
@@ -329,7 +329,7 @@ static struct radeon_asic r200_asic = {
 	},
 };
 
-static struct radeon_asic_ring r300_gfx_ring = {
+static const struct radeon_asic_ring r300_gfx_ring = {
 	.ib_execute = &r100_ring_ib_execute,
 	.emit_fence = &r300_fence_ring_emit,
 	.emit_semaphore = &r100_semaphore_ring_emit,
@@ -343,7 +343,7 @@ static struct radeon_asic_ring r300_gfx_ring = {
 	.set_wptr = &r100_gfx_set_wptr,
 };
 
-static struct radeon_asic_ring rv515_gfx_ring = {
+static const struct radeon_asic_ring rv515_gfx_ring = {
 	.ib_execute = &r100_ring_ib_execute,
 	.emit_fence = &r300_fence_ring_emit,
 	.emit_semaphore = &r100_semaphore_ring_emit,
@@ -901,7 +901,7 @@ static struct radeon_asic r520_asic = {
 	},
 };
 
-static struct radeon_asic_ring r600_gfx_ring = {
+static const struct radeon_asic_ring r600_gfx_ring = {
 	.ib_execute = &r600_ring_ib_execute,
 	.emit_fence = &r600_fence_ring_emit,
 	.emit_semaphore = &r600_semaphore_ring_emit,
@@ -914,7 +914,7 @@ static struct radeon_asic_ring r600_gfx_ring = {
 	.set_wptr = &r600_gfx_set_wptr,
 };
 
-static struct radeon_asic_ring r600_dma_ring = {
+static const struct radeon_asic_ring r600_dma_ring = {
 	.ib_execute = &r600_dma_ring_ib_execute,
 	.emit_fence = &r600_dma_fence_ring_emit,
 	.emit_semaphore = &r600_dma_semaphore_ring_emit,
@@ -999,7 +999,7 @@ static struct radeon_asic r600_asic = {
 	},
 };
 
-static struct radeon_asic_ring rv6xx_uvd_ring = {
+static const struct radeon_asic_ring rv6xx_uvd_ring = {
 	.ib_execute = &uvd_v1_0_ib_execute,
 	.emit_fence = &uvd_v1_0_fence_emit,
 	.emit_semaphore = &uvd_v1_0_semaphore_emit,
@@ -1198,7 +1198,7 @@ static struct radeon_asic rs780_asic = {
 	},
 };
 
-static struct radeon_asic_ring rv770_uvd_ring = {
+static const struct radeon_asic_ring rv770_uvd_ring = {
 	.ib_execute = &uvd_v1_0_ib_execute,
 	.emit_fence = &uvd_v2_2_fence_emit,
 	.emit_semaphore = &uvd_v2_2_semaphore_emit,
@@ -1305,7 +1305,7 @@ static struct radeon_asic rv770_asic = {
 	},
 };
 
-static struct radeon_asic_ring evergreen_gfx_ring = {
+static const struct radeon_asic_ring evergreen_gfx_ring = {
 	.ib_execute = &evergreen_ring_ib_execute,
 	.emit_fence = &r600_fence_ring_emit,
 	.emit_semaphore = &r600_semaphore_ring_emit,
@@ -1318,7 +1318,7 @@ static struct radeon_asic_ring evergreen_gfx_ring = {
 	.set_wptr = &r600_gfx_set_wptr,
 };
 
-static struct radeon_asic_ring evergreen_dma_ring = {
+static const struct radeon_asic_ring evergreen_dma_ring = {
 	.ib_execute = &evergreen_dma_ring_ib_execute,
 	.emit_fence = &evergreen_dma_fence_ring_emit,
 	.emit_semaphore = &r600_dma_semaphore_ring_emit,
@@ -1612,7 +1612,7 @@ static struct radeon_asic btc_asic = {
 	},
 };
 
-static struct radeon_asic_ring cayman_gfx_ring = {
+static const struct radeon_asic_ring cayman_gfx_ring = {
 	.ib_execute = &cayman_ring_ib_execute,
 	.ib_parse = &evergreen_ib_parse,
 	.emit_fence = &cayman_fence_ring_emit,
@@ -1627,7 +1627,7 @@ static struct radeon_asic_ring cayman_gfx_ring = {
 	.set_wptr = &cayman_gfx_set_wptr,
 };
 
-static struct radeon_asic_ring cayman_dma_ring = {
+static const struct radeon_asic_ring cayman_dma_ring = {
 	.ib_execute = &cayman_dma_ring_ib_execute,
 	.ib_parse = &evergreen_dma_ib_parse,
 	.emit_fence = &evergreen_dma_fence_ring_emit,
@@ -1642,7 +1642,7 @@ static struct radeon_asic_ring cayman_dma_ring = {
 	.set_wptr = &cayman_dma_set_wptr
 };
 
-static struct radeon_asic_ring cayman_uvd_ring = {
+static const struct radeon_asic_ring cayman_uvd_ring = {
 	.ib_execute = &uvd_v1_0_ib_execute,
 	.emit_fence = &uvd_v2_2_fence_emit,
 	.emit_semaphore = &uvd_v3_1_semaphore_emit,
@@ -1760,7 +1760,7 @@ static struct radeon_asic cayman_asic = {
 	},
 };
 
-static struct radeon_asic_ring trinity_vce_ring = {
+static const struct radeon_asic_ring trinity_vce_ring = {
 	.ib_execute = &radeon_vce_ib_execute,
 	.emit_fence = &radeon_vce_fence_emit,
 	.emit_semaphore = &radeon_vce_semaphore_emit,
@@ -1881,7 +1881,7 @@ static struct radeon_asic trinity_asic = {
 	},
 };
 
-static struct radeon_asic_ring si_gfx_ring = {
+static const struct radeon_asic_ring si_gfx_ring = {
 	.ib_execute = &si_ring_ib_execute,
 	.ib_parse = &si_ib_parse,
 	.emit_fence = &si_fence_ring_emit,
@@ -1896,7 +1896,7 @@ static struct radeon_asic_ring si_gfx_ring = {
 	.set_wptr = &cayman_gfx_set_wptr,
 };
 
-static struct radeon_asic_ring si_dma_ring = {
+static const struct radeon_asic_ring si_dma_ring = {
 	.ib_execute = &cayman_dma_ring_ib_execute,
 	.ib_parse = &evergreen_dma_ib_parse,
 	.emit_fence = &evergreen_dma_fence_ring_emit,
@@ -2023,7 +2023,7 @@ static struct radeon_asic si_asic = {
 	},
 };
 
-static struct radeon_asic_ring ci_gfx_ring = {
+static const struct radeon_asic_ring ci_gfx_ring = {
 	.ib_execute = &cik_ring_ib_execute,
 	.ib_parse = &cik_ib_parse,
 	.emit_fence = &cik_fence_gfx_ring_emit,
@@ -2038,7 +2038,7 @@ static struct radeon_asic_ring ci_gfx_ring = {
 	.set_wptr = &cik_gfx_set_wptr,
 };
 
-static struct radeon_asic_ring ci_cp_ring = {
+static const struct radeon_asic_ring ci_cp_ring = {
 	.ib_execute = &cik_ring_ib_execute,
 	.ib_parse = &cik_ib_parse,
 	.emit_fence = &cik_fence_compute_ring_emit,
@@ -2053,7 +2053,7 @@ static struct radeon_asic_ring ci_cp_ring = {
 	.set_wptr = &cik_compute_set_wptr,
 };
 
-static struct radeon_asic_ring ci_dma_ring = {
+static const struct radeon_asic_ring ci_dma_ring = {
 	.ib_execute = &cik_sdma_ring_ib_execute,
 	.ib_parse = &cik_ib_parse,
 	.emit_fence = &cik_sdma_fence_ring_emit,
@@ -2068,7 +2068,7 @@ static struct radeon_asic_ring ci_dma_ring = {
 	.set_wptr = &cik_sdma_set_wptr,
 };
 
-static struct radeon_asic_ring ci_vce_ring = {
+static const struct radeon_asic_ring ci_vce_ring = {
 	.ib_execute = &radeon_vce_ib_execute,
 	.emit_fence = &radeon_vce_fence_emit,
 	.emit_semaphore = &radeon_vce_semaphore_emit,