Re: [PATCH] drm/i915: Don't enable hwmon for selftests

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On Tue, Apr 09, 2024 at 09:28:55PM -0700, Ashutosh Dixit wrote:
> There are no hwmon selftests so there is no need to enable hwmon for
> selftests. So enable hwmon only for real driver load.
> 
> Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/10366
> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@xxxxxxxxx>

Why are we adding duct tape instead of fixing it properly?

> ---
>  drivers/gpu/drm/i915/i915_driver.c | 16 ++++++++++++++--
>  1 file changed, 14 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_driver.c b/drivers/gpu/drm/i915/i915_driver.c
> index 9ee902d5b72c..6fa6d2c8109f 100644
> --- a/drivers/gpu/drm/i915/i915_driver.c
> +++ b/drivers/gpu/drm/i915/i915_driver.c
> @@ -94,6 +94,7 @@
>  #include "i915_memcpy.h"
>  #include "i915_perf.h"
>  #include "i915_query.h"
> +#include "i915_selftest.h"
>  #include "i915_suspend.h"
>  #include "i915_switcheroo.h"
>  #include "i915_sysfs.h"
> @@ -589,6 +590,15 @@ static void i915_driver_hw_remove(struct drm_i915_private *dev_priv)
>  		pci_disable_msi(pdev);
>  }
>  
> +static bool is_selftest(void)
> +{
> +#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
> +	return i915_selftest.live || i915_selftest.perf || i915_selftest.mock;
> +#else
> +	return false;
> +#endif
> +}
> +
>  /**
>   * i915_driver_register - register the driver with the rest of the system
>   * @dev_priv: device private
> @@ -624,7 +634,8 @@ static void i915_driver_register(struct drm_i915_private *dev_priv)
>  
>  	intel_pxp_debugfs_register(dev_priv->pxp);
>  
> -	i915_hwmon_register(dev_priv);
> +	if (!is_selftest())
> +		i915_hwmon_register(dev_priv);
>  
>  	intel_display_driver_register(dev_priv);
>  
> @@ -660,7 +671,8 @@ static void i915_driver_unregister(struct drm_i915_private *dev_priv)
>  	for_each_gt(gt, dev_priv, i)
>  		intel_gt_driver_unregister(gt);
>  
> -	i915_hwmon_unregister(dev_priv);
> +	if (!is_selftest())
> +		i915_hwmon_unregister(dev_priv);
>  
>  	i915_perf_unregister(dev_priv);
>  	i915_pmu_unregister(dev_priv);
> -- 
> 2.41.0

-- 
Ville Syrjälä
Intel



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