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drm/i915: fix i915_interrupt_info on BDW 

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@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Paulo Zanoni 2014-08-08 17:45:32 -03:00 committed by Daniel Vetter
parent fdd508a641
commit 22c59960d9
1 changed files with 6 additions and 0 deletions
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6
drivers/gpu/drm/i915/i915_debugfs.c
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@ -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)));