From 93a0ed6cc164bad2bc9afcf1d06186f8425020af Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Fri, 14 Feb 2020 15:50:57 +0200 Subject: [PATCH] drm/i915: split intel_modeset_driver_remove() to pre/post irq uninstall MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Split intel_modeset_driver_remove() to two, the part with working irqs before irq uninstall, and the part after irq uninstall. Move irq_unintall() closer to the layer it belongs. The error path in i915_driver_modeset_probe() looks obviously weird after this, but remains as good or broken as it ever was. No functional changes. Cc: Ville Syrjälä Reviewed-by: Ville Syrjälä Signed-off-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20200214135058.7580-1-jani.nikula@intel.com --- drivers/gpu/drm/i915/display/intel_display.c | 12 +++++------- drivers/gpu/drm/i915/display/intel_display.h | 1 + drivers/gpu/drm/i915/i915_drv.c | 5 +++++ 3 files changed, 11 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index df47b2fdfa38..87df5f937f94 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -18923,6 +18923,7 @@ static void intel_hpd_poll_fini(struct drm_i915_private *i915) drm_connector_list_iter_end(&conn_iter); } +/* part #1: call before irq uninstall */ void intel_modeset_driver_remove(struct drm_i915_private *i915) { flush_workqueue(i915->flip_wq); @@ -18930,14 +18931,11 @@ void intel_modeset_driver_remove(struct drm_i915_private *i915) flush_work(&i915->atomic_helper.free_work); WARN_ON(!llist_empty(&i915->atomic_helper.free_list)); +} - /* - * Interrupts and polling as the first thing to avoid creating havoc. - * Too much stuff here (turning of connectors, ...) would - * experience fancy races otherwise. - */ - intel_irq_uninstall(i915); - +/* part #2: call after irq uninstall */ +void intel_modeset_driver_remove_noirq(struct drm_i915_private *i915) +{ /* * Due to the hpd irq storm handling the hotplug work can re-arm the * poll handlers. Hence disable polling after hpd handling is shut down. diff --git a/drivers/gpu/drm/i915/display/intel_display.h b/drivers/gpu/drm/i915/display/intel_display.h index 75438a136d58..f92efbbec838 100644 --- a/drivers/gpu/drm/i915/display/intel_display.h +++ b/drivers/gpu/drm/i915/display/intel_display.h @@ -616,6 +616,7 @@ intel_format_info_is_yuv_semiplanar(const struct drm_format_info *info, void intel_modeset_init_hw(struct drm_i915_private *i915); int intel_modeset_init(struct drm_i915_private *i915); void intel_modeset_driver_remove(struct drm_i915_private *i915); +void intel_modeset_driver_remove_noirq(struct drm_i915_private *i915); void intel_display_resume(struct drm_device *dev); void intel_init_pch_refclk(struct drm_i915_private *dev_priv); diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 0e8b56d8fce2..e85078eb7b7d 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -272,6 +272,9 @@ static int i915_driver_modeset_probe(struct drm_i915_private *i915) i915_gem_driver_release(i915); cleanup_modeset: intel_modeset_driver_remove(i915); + intel_irq_uninstall(i915); + intel_modeset_driver_remove_noirq(i915); + goto cleanup_csr; cleanup_irq: intel_irq_uninstall(i915); cleanup_csr: @@ -288,6 +291,8 @@ static void i915_driver_modeset_remove(struct drm_i915_private *i915) intel_irq_uninstall(i915); + intel_modeset_driver_remove_noirq(i915); + intel_bios_driver_remove(i915); intel_vga_unregister(i915);