On 29.07.2024 2:42 PM, Bryan O'Donoghue wrote: > pm_runtime_enable() should happen prior to vfe_get() since vfe_get() calls > pm_runtime_resume_and_get(). > > This is a basic race condition that doesn't show up for most users so is > not widely reported. If you blacklist qcom-camss in modules.d and then > subsequently modprobe the module post-boot it is possible to reliably show > this error up. > > The kernel log for this error looks like this: > > qcom-camss ac5a000.camss: Failed to power up pipeline: -13 > > Fixes: 02afa816dbbf ("media: camss: Add basic runtime PM support") > Reported-by: Johan Hovold <johan+linaro@xxxxxxxxxx> > Closes: https://lore.kernel.org/lkml/ZoVNHOTI0PKMNt4_@xxxxxxxxxxxxxxxxxxxx/ > Tested-by: Johan Hovold <johan+linaro@xxxxxxxxxx> > Cc: <stable@xxxxxxxxxxxxxxx> > Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx> > --- Reviewed-by: Konrad Dybcio <konradybcio@xxxxxxxxxx> Konrad