drm/amd/amdgpu: Fix debugfs reg read/write address width

The MMIO space is wider now so we mask the lower 22 bits
instead of 18.

Signed-off-by: Tom St Denis <[email protected]>
Reviewed-by: Christian König <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 4120b351a8e5cc856492ad628f4d0567614dfe57..a3a105ec99e2d797978c79355f6ea67d4d4df5b4 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2590,7 +2590,7 @@ static ssize_t amdgpu_debugfs_regs_read(struct file *f, char __user *buf,
                use_bank = 0;
        }
 
-       *pos &= 0x3FFFF;
+       *pos &= (1UL << 22) - 1;
 
        if (use_bank) {
                if ((sh_bank != 0xFFFFFFFF && sh_bank >= adev->gfx.config.max_sh_per_se) ||
@@ -2666,7 +2666,7 @@ static ssize_t amdgpu_debugfs_regs_write(struct file *f, const char __user *buf,
                use_bank = 0;
        }
 
-       *pos &= 0x3FFFF;
+       *pos &= (1UL << 22) - 1;
 
        if (use_bank) {
                if ((sh_bank != 0xFFFFFFFF && sh_bank >= adev->gfx.config.max_sh_per_se) ||