When 'PAGE_SIZE=64K',the following compilation error occurs:
"
../drivers/gpu/drm/imagination/pvr_fw_mips.c: In function
‘pvr_mips_fw_process’:
../drivers/gpu/drm/imagination/pvr_fw_mips.c:140:60: error: array
subscript 0 is outside the bounds of an interior zero-length array
‘dma_addr_t[0]’ {aka ‘long long unsigned int[]’}
[-Werror=zero-length-bounds]
140 | boot_data->pt_phys_addr[page_nr] =
mips_data->pt_dma_addr[src_page_nr] +
~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~
In file included from ../drivers/gpu/drm/imagination/pvr_fw_mips.c:6:
../drivers/gpu/drm/imagination/pvr_fw_mips.h:30:13: note: while
referencing ‘pt_dma_addr’
30 | dma_addr_t pt_dma_addr[PVR_MIPS_PT_PAGE_COUNT];
"
This is because 'PVR_MIPS_PT_PAGE_COUNT' is defined as
'(ROGUE_MIPSFW_MAX_NUM_PAGETABLE_PAGES * ROGUE_MIPSFW_PAGE_SIZE_4K) \
>> PAGE_SHIFT', and under the above conditions, 'PAGE_SHIFT' is '16',
'ROGUE_MIPSFW_MAX_NUM_PAGETABLE_PAGES' is '4','ROGUE_MIPSFW_PAGE_SIZE_4K'
is '4096',so 'PVR_MIPS_PT_PAGE_COUNT' is '0' causing the member
'pt_dma_addr' to be incorrectly defined.
Signed-off-by: Lu Yao <yaolu@xxxxxxxxxx>
---
drivers/gpu/drm/imagination/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/imagination/Kconfig b/drivers/gpu/drm/imagination/Kconfig
index 3bfa2ac212dc..e585922f634d 100644
--- a/drivers/gpu/drm/imagination/Kconfig
+++ b/drivers/gpu/drm/imagination/Kconfig
@@ -3,7 +3,7 @@
config DRM_POWERVR
tristate "Imagination Technologies PowerVR (Series 6 and later) & IMG Graphics"
- depends on ARM64
+ depends on (ARM64 && ARM64_PAGE_SHIFT=12)
depends on DRM
depends on PM
select DRM_EXEC
--
2.25.1
