提交 29ac2218 编写于 作者: E Eric Anholt 提交者: Greg Kroah-Hartman

drm/v3d: Skip debugfs dumping GCA on platforms without GCA.

commit 2f20fa8d12e859a03f68bdd81d75830141bc9ac9 upstream.

Fixes an oops reading this debugfs entry on BCM7278.
Signed-off-by: NEric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20180928232126.4332-4-eric@anholt.net
Fixes: 57692c94 ("drm/v3d: Introduce a new DRM driver for Broadcom V3D V3.x+")
Cc: <stable@vger.kernel.org>
Reviewed-by: NBoris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
上级 6c56e89e
......@@ -71,10 +71,13 @@ static int v3d_v3d_debugfs_regs(struct seq_file *m, void *unused)
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++) {
......
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