If kernel is built with hung task detection enabled and CONFIG_DEFAULT_HUNG_TASK_TIMEOUT set to less than 60 seconds, snd_hdac_i915_init() will trigger the hung task timeout in case i915 is not available and taint the kernel.
Split the 60sec wait into a loop of smaller waits to avoid this. Reviewed-by: Lucas De Marchi <[email protected]> Co-developed-by: Ramalingam C <[email protected]> Signed-off-by: Ramalingam C <[email protected]> Signed-off-by: Kai Vehmanen <[email protected]> --- sound/hda/hdac_i915.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) Changes V1->V2: - address local variable naming issue raised by Amadeusz and use Takashi's proposal diff --git a/sound/hda/hdac_i915.c b/sound/hda/hdac_i915.c index 454474ac5716..aa48bed7baf7 100644 --- a/sound/hda/hdac_i915.c +++ b/sound/hda/hdac_i915.c @@ -143,7 +143,7 @@ static bool i915_gfx_present(void) int snd_hdac_i915_init(struct hdac_bus *bus) { struct drm_audio_component *acomp; - int err; + int err, i; if (!i915_gfx_present()) return -ENODEV; @@ -159,9 +159,11 @@ int snd_hdac_i915_init(struct hdac_bus *bus) if (!acomp->ops) { if (!IS_ENABLED(CONFIG_MODULES) || !request_module("i915")) { - /* 60s timeout */ - wait_for_completion_timeout(&acomp->master_bind_complete, - msecs_to_jiffies(60 * 1000)); + /* max 60s timeout */ + for (i = 0; i < 60; i++) + if (wait_for_completion_timeout(&acomp->master_bind_complete, + msecs_to_jiffies(1000))) + break; } } if (!acomp->ops) { base-commit: fd7698cf0858f8c5e659b655109cd93c2f15cdd3 -- 2.35.1
