| Issue |
52923
|
| Summary |
Kernel 5.15.11 (and higher) C syntax parse error
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
ErichLoew
|
Compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project.git 946eb7a037d5f83ea9cdc99bac0f939ddd344e09)
Target: x86_64-unknown-linux-gnu
Thread model: posix
Kernel: 5.15.11 vanilla
Module: source/drivers/gpu/drm/i915/intel_pm.c
Method: snb_wm_latency_quirk(struct drm_i915_private *dev_priv)
Observations:
--> Compiles fine with "gcc (GCC) 11.2.0" without changes of source code
--> clang 14.0.0 fails on original source code --> source code mitigation changes are required.
Mitigation for clang 14.0.0:
A) Change ilk_increase_wm_latency() to return int instead of bool
B) Updated statement:
changed = (bool)(ilk_increase_wm_latency(dev_priv, dev_priv->wm.pri_latency, 12) |
ilk_increase_wm_latency(dev_priv, dev_priv->wm.spr_latency, 12) |
ilk_increase_wm_latency(dev_priv, dev_priv->wm.cur_latency, 12));
Guess: clang-14 refuses usage of data type bool inside of bit logic evaluating statements.
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