From: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
Currently, if the machine is runtime suspended an you read the file,
you will get an "Unclaimed register" error message.
Testcase: igt/pm_rpm/debugfs-read
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_debugfs.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 0748960..c3bf3d5 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -703,6 +703,12 @@ static int i915_interrupt_info(struct seq_file *m, void *data)
}
for_each_pipe(pipe) {
+ if (!intel_display_power_enabled(dev_priv,
+ POWER_DOMAIN_PIPE(pipe))) {
+ seq_printf(m, "Pipe %c power disabled\n",
+ pipe_name(pipe));
+ continue;
+ }
seq_printf(m, "Pipe %c IMR:\t%08x\n",
pipe_name(pipe),
I915_READ(GEN8_DE_PIPE_IMR(pipe)));
--
2.0.1
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