[PATCH 4.19 096/170] drm/v3d: Skip debugfs dumping GCA on platforms without GCA.
From: Greg Kroah-Hartman
Date: Mon Jan 07 2019 - 07:52:59 EST
4.19-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eric Anholt <eric@xxxxxxxxxx>
commit 2f20fa8d12e859a03f68bdd81d75830141bc9ac9 upstream.
Fixes an oops reading this debugfs entry on BCM7278.
Signed-off-by: Eric Anholt <eric@xxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20180928232126.4332-4-eric@xxxxxxxxxx
Fixes: 57692c94dcbe ("drm/v3d: Introduce a new DRM driver for Broadcom V3D V3.x+")
Cc: <stable@xxxxxxxxxxxxxxx>
Reviewed-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/v3d/v3d_debugfs.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/v3d/v3d_debugfs.c
+++ b/drivers/gpu/drm/v3d/v3d_debugfs.c
@@ -71,10 +71,13 @@ static int v3d_v3d_debugfs_regs(struct s
V3D_READ(v3d_hub_reg_defs[i].reg));
}
- for (i = 0; i < ARRAY_SIZE(v3d_gca_reg_defs); i++) {
- seq_printf(m, "%s (0x%04x): 0x%08x\n",
- v3d_gca_reg_defs[i].name, v3d_gca_reg_defs[i].reg,
- V3D_GCA_READ(v3d_gca_reg_defs[i].reg));
+ if (v3d->ver < 41) {
+ for (i = 0; i < ARRAY_SIZE(v3d_gca_reg_defs); i++) {
+ seq_printf(m, "%s (0x%04x): 0x%08x\n",
+ v3d_gca_reg_defs[i].name,
+ v3d_gca_reg_defs[i].reg,
+ V3D_GCA_READ(v3d_gca_reg_defs[i].reg));
+ }
}
for (core = 0; core < v3d->cores; core++) {