[PATCH 2/3] drm/radeon: remove range check from *_gart_set_page
Christian König
deathsimple at vodafone.de
Wed Jun 4 06:29:57 PDT 2014
From: Christian König <christian.koenig at amd.com>
We never check the return value anyway and if the
index isn't valid would crash way before calling
the functions.
Signed-off-by: Christian König <christian.koenig at amd.com>
---
drivers/gpu/drm/radeon/r100.c | 8 ++------
drivers/gpu/drm/radeon/r300.c | 7 ++-----
drivers/gpu/drm/radeon/radeon.h | 3 ++-
drivers/gpu/drm/radeon/radeon_asic.h | 12 ++++++++----
drivers/gpu/drm/radeon/rs400.c | 7 +------
drivers/gpu/drm/radeon/rs600.c | 6 +-----
6 files changed, 16 insertions(+), 27 deletions(-)
diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c
index ad99813..1544efc 100644
--- a/drivers/gpu/drm/radeon/r100.c
+++ b/drivers/gpu/drm/radeon/r100.c
@@ -682,15 +682,11 @@ void r100_pci_gart_disable(struct radeon_device *rdev)
WREG32(RADEON_AIC_HI_ADDR, 0);
}
-int r100_pci_gart_set_page(struct radeon_device *rdev, int i, uint64_t addr)
+void r100_pci_gart_set_page(struct radeon_device *rdev, unsigned i,
+ uint64_t addr)
{
u32 *gtt = rdev->gart.ptr;
-
- if (i < 0 || i > rdev->gart.num_gpu_pages) {
- return -EINVAL;
- }
gtt[i] = cpu_to_le32(lower_32_bits(addr));
- return 0;
}
void r100_pci_gart_fini(struct radeon_device *rdev)
diff --git a/drivers/gpu/drm/radeon/r300.c b/drivers/gpu/drm/radeon/r300.c
index 206caf9..3c21d77 100644
--- a/drivers/gpu/drm/radeon/r300.c
+++ b/drivers/gpu/drm/radeon/r300.c
@@ -72,13 +72,11 @@ void rv370_pcie_gart_tlb_flush(struct radeon_device *rdev)
#define R300_PTE_WRITEABLE (1 << 2)
#define R300_PTE_READABLE (1 << 3)
-int rv370_pcie_gart_set_page(struct radeon_device *rdev, int i, uint64_t addr)
+void rv370_pcie_gart_set_page(struct radeon_device *rdev, unsigned i,
+ uint64_t addr)
{
void __iomem *ptr = rdev->gart.ptr;
- if (i < 0 || i > rdev->gart.num_gpu_pages) {
- return -EINVAL;
- }
addr = (lower_32_bits(addr) >> 8) |
((upper_32_bits(addr) & 0xff) << 24) |
R300_PTE_WRITEABLE | R300_PTE_READABLE;
@@ -86,7 +84,6 @@ int rv370_pcie_gart_set_page(struct radeon_device *rdev, int i, uint64_t addr)
* on powerpc without HW swappers, it'll get swapped on way
* into VRAM - so no need for cpu_to_le32 on VRAM tables */
writel(addr, ((void __iomem *)ptr) + (i * 4));
- return 0;
}
int rv370_pcie_gart_init(struct radeon_device *rdev)
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 0661a77..c08987c 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -1778,7 +1778,8 @@ struct radeon_asic {
/* gart */
struct {
void (*tlb_flush)(struct radeon_device *rdev);
- int (*set_page)(struct radeon_device *rdev, int i, uint64_t addr);
+ void (*set_page)(struct radeon_device *rdev, unsigned i,
+ uint64_t addr);
} gart;
struct {
int (*init)(struct radeon_device *rdev);
diff --git a/drivers/gpu/drm/radeon/radeon_asic.h b/drivers/gpu/drm/radeon/radeon_asic.h
index 0eab015..01e7c0a 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.h
+++ b/drivers/gpu/drm/radeon/radeon_asic.h
@@ -67,7 +67,8 @@ bool r100_gpu_is_lockup(struct radeon_device *rdev, struct radeon_ring *cp);
int r100_asic_reset(struct radeon_device *rdev);
u32 r100_get_vblank_counter(struct radeon_device *rdev, int crtc);
void r100_pci_gart_tlb_flush(struct radeon_device *rdev);
-int r100_pci_gart_set_page(struct radeon_device *rdev, int i, uint64_t addr);
+void r100_pci_gart_set_page(struct radeon_device *rdev, unsigned i,
+ uint64_t addr);
void r100_ring_start(struct radeon_device *rdev, struct radeon_ring *ring);
int r100_irq_set(struct radeon_device *rdev);
int r100_irq_process(struct radeon_device *rdev);
@@ -171,7 +172,8 @@ extern void r300_fence_ring_emit(struct radeon_device *rdev,
struct radeon_fence *fence);
extern int r300_cs_parse(struct radeon_cs_parser *p);
extern void rv370_pcie_gart_tlb_flush(struct radeon_device *rdev);
-extern int rv370_pcie_gart_set_page(struct radeon_device *rdev, int i, uint64_t addr);
+extern void rv370_pcie_gart_set_page(struct radeon_device *rdev, unsigned i,
+ uint64_t addr);
extern void rv370_set_pcie_lanes(struct radeon_device *rdev, int lanes);
extern int rv370_get_pcie_lanes(struct radeon_device *rdev);
extern void r300_set_reg_safe(struct radeon_device *rdev);
@@ -206,7 +208,8 @@ extern void rs400_fini(struct radeon_device *rdev);
extern int rs400_suspend(struct radeon_device *rdev);
extern int rs400_resume(struct radeon_device *rdev);
void rs400_gart_tlb_flush(struct radeon_device *rdev);
-int rs400_gart_set_page(struct radeon_device *rdev, int i, uint64_t addr);
+void rs400_gart_set_page(struct radeon_device *rdev, unsigned i,
+ uint64_t addr);
uint32_t rs400_mc_rreg(struct radeon_device *rdev, uint32_t reg);
void rs400_mc_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v);
int rs400_gart_init(struct radeon_device *rdev);
@@ -229,7 +232,8 @@ int rs600_irq_process(struct radeon_device *rdev);
void rs600_irq_disable(struct radeon_device *rdev);
u32 rs600_get_vblank_counter(struct radeon_device *rdev, int crtc);
void rs600_gart_tlb_flush(struct radeon_device *rdev);
-int rs600_gart_set_page(struct radeon_device *rdev, int i, uint64_t addr);
+void rs600_gart_set_page(struct radeon_device *rdev, unsigned i,
+ uint64_t addr);
uint32_t rs600_mc_rreg(struct radeon_device *rdev, uint32_t reg);
void rs600_mc_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v);
void rs600_bandwidth_update(struct radeon_device *rdev);
diff --git a/drivers/gpu/drm/radeon/rs400.c b/drivers/gpu/drm/radeon/rs400.c
index 130d5cc..a0f96de 100644
--- a/drivers/gpu/drm/radeon/rs400.c
+++ b/drivers/gpu/drm/radeon/rs400.c
@@ -212,21 +212,16 @@ void rs400_gart_fini(struct radeon_device *rdev)
#define RS400_PTE_WRITEABLE (1 << 2)
#define RS400_PTE_READABLE (1 << 3)
-int rs400_gart_set_page(struct radeon_device *rdev, int i, uint64_t addr)
+void rs400_gart_set_page(struct radeon_device *rdev, unsigned i, uint64_t addr)
{
uint32_t entry;
u32 *gtt = rdev->gart.ptr;
- if (i < 0 || i > rdev->gart.num_gpu_pages) {
- return -EINVAL;
- }
-
entry = (lower_32_bits(addr) & PAGE_MASK) |
((upper_32_bits(addr) & 0xff) << 4) |
RS400_PTE_WRITEABLE | RS400_PTE_READABLE;
entry = cpu_to_le32(entry);
gtt[i] = entry;
- return 0;
}
int rs400_mc_wait_for_idle(struct radeon_device *rdev)
diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c
index e0465b2..d1a35cb 100644
--- a/drivers/gpu/drm/radeon/rs600.c
+++ b/drivers/gpu/drm/radeon/rs600.c
@@ -626,20 +626,16 @@ static void rs600_gart_fini(struct radeon_device *rdev)
radeon_gart_table_vram_free(rdev);
}
-int rs600_gart_set_page(struct radeon_device *rdev, int i, uint64_t addr)
+void rs600_gart_set_page(struct radeon_device *rdev, unsigned i, uint64_t addr)
{
void __iomem *ptr = (void *)rdev->gart.ptr;
- if (i < 0 || i > rdev->gart.num_gpu_pages) {
- return -EINVAL;
- }
addr = addr & 0xFFFFFFFFFFFFF000ULL;
if (addr == rdev->dummy_page.addr)
addr |= R600_PTE_SYSTEM | R600_PTE_SNOOPED;
else
addr |= R600_PTE_GART;
writeq(addr, ptr + (i * 8));
- return 0;
}
int rs600_irq_set(struct radeon_device *rdev)
--
1.9.1
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