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bbecac5b GKH |
1 | From 9965db26ac0548648309f506dc155a92daa2158f Mon Sep 17 00:00:00 2001 |
2 | From: Mika Kahola <mika.kahola@intel.com> | |
3 | Date: Mon, 18 Dec 2017 10:04:03 +0200 | |
4 | Subject: drm/i915: Check for fused or unused pipes | |
5 | ||
6 | From: Mika Kahola <mika.kahola@intel.com> | |
7 | ||
8 | commit 9965db26ac0548648309f506dc155a92daa2158f upstream. | |
9 | ||
10 | We may have fused or unused pipes in our system. Let's check that the pipe | |
11 | in question is within limits of accessible pipes. In case, that we are not | |
12 | able to access the pipe, we return early with a warning. | |
13 | ||
14 | v2: Rephrasing of the commit message (Jani) | |
15 | ||
16 | Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103206 | |
17 | Reported-by: Thomas Gleixner <tglx@linutronix.de> | |
18 | Tested-by: Jaswinder Singh Rajput <jaswinder@perfectintelligent.com> | |
19 | Suggested-by: Jani Nikula <jani.nikula@intel.com> | |
20 | Reviewed-by: Jani Nikula <jani.nikula@intel.com> | |
21 | Signed-off-by: Mika Kahola <mika.kahola@intel.com> | |
22 | Signed-off-by: Jani Nikula <jani.nikula@intel.com> | |
23 | Link: https://patchwork.freedesktop.org/patch/msgid/1513584243-12607-1-git-send-email-mika.kahola@intel.com | |
24 | (cherry picked from commit 0b7029b7e43fda1304c181a3ade0b429b9edcd9d) | |
25 | Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> | |
26 | Cc: <stable@vger.kernel.org> # v4.10+ | |
27 | Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |
28 | ||
29 | --- | |
30 | drivers/gpu/drm/i915/intel_audio.c | 2 +- | |
31 | 1 file changed, 1 insertion(+), 1 deletion(-) | |
32 | ||
33 | --- a/drivers/gpu/drm/i915/intel_audio.c | |
34 | +++ b/drivers/gpu/drm/i915/intel_audio.c | |
35 | @@ -754,7 +754,7 @@ static struct intel_encoder *get_saved_e | |
36 | { | |
37 | struct intel_encoder *encoder; | |
38 | ||
39 | - if (WARN_ON(pipe >= INTEL_INFO(dev_priv)->num_pipes)) | |
40 | + if (WARN_ON(pipe >= ARRAY_SIZE(dev_priv->av_enc_map))) | |
41 | return NULL; | |
42 | ||
43 | /* MST */ |