From 44cbd33899302fc5294fc5fedfd0276348d796e4 Mon Sep 17 00:00:00 2001 From: Ben Widawsky Date: Tue, 6 Nov 2012 14:36:36 +0000 Subject: [PATCH] drm/i915: Missed lock change with rps lock Fixes a WARN_ON in igt/tests/debugfs_reader CC: Jesse Barnes Signed-off-by: Ben Widawsky Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_debugfs.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 09cd7d76f6ae..4568e7d8a060 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -1096,8 +1096,10 @@ static int gen6_drpc_info(struct seq_file *m) rpmodectl1 = I915_READ(GEN6_RP_CONTROL); rcctl1 = I915_READ(GEN6_RC_CONTROL); - sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS, &rc6vids); mutex_unlock(&dev->struct_mutex); + mutex_lock(&dev_priv->rps.hw_lock); + sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS, &rc6vids); + mutex_unlock(&dev_priv->rps.hw_lock); seq_printf(m, "Video Turbo Mode: %s\n", yesno(rpmodectl1 & GEN6_RP_MEDIA_TURBO)); -- GitLab