4.20-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++) {
