| Message ID | 1654291716-6603-2-git-send-email-quic_khsieh@quicinc.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | Fix NOC fatal error if msm_drm_init() failed | expand |
I will drop this patch since the problem had been fixed by Dmitry Baryshkov patch. https://gitlab.freedesktop.org/drm/msm/-/commit/577e2a9dfc8fba7938aaf75db63fae7e328cc3cb On 6/3/2022 2:28 PM, Kuogee Hsieh wrote: > At msm initialize phase, msm_drm_init() is called to initialize modules > sequentially. It will call msm_drm_uninit() to clean up initialized phase > if any module initialization return failed. This patch move msm_irq_install() > to the last step of msm_drm_init() after all modules are initialized successfully > so that no msm_irq_unistall() required at msm_drm_uninit() if any module > initialization failed happen at msm_drm_init(). > > Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com> > --- > drivers/gpu/drm/msm/msm_drv.c | 29 ++++++----------------------- > 1 file changed, 6 insertions(+), 23 deletions(-) > > diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c > index 6665c5a..ab42e9a 100644 > --- a/drivers/gpu/drm/msm/msm_drv.c > +++ b/drivers/gpu/drm/msm/msm_drv.c > @@ -132,15 +132,6 @@ static int msm_irq_install(struct drm_device *dev, unsigned int irq) > return 0; > } > > -static void msm_irq_uninstall(struct drm_device *dev) > -{ > - struct msm_drm_private *priv = dev->dev_private; > - struct msm_kms *kms = priv->kms; > - > - kms->funcs->irq_uninstall(kms); > - free_irq(kms->irq, dev); > -} > - > struct msm_vblank_work { > struct work_struct work; > int crtc_id; > @@ -232,10 +223,6 @@ static int msm_drm_uninit(struct device *dev) > > drm_mode_config_cleanup(ddev); > > - pm_runtime_get_sync(dev); > - msm_irq_uninstall(ddev); > - pm_runtime_put_sync(dev); > - > if (kms && kms->funcs) > kms->funcs->destroy(kms); > > @@ -437,16 +424,6 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv) > goto err_msm_uninit; > } > > - if (kms) { > - pm_runtime_get_sync(dev); > - ret = msm_irq_install(ddev, kms->irq); > - pm_runtime_put_sync(dev); > - if (ret < 0) { > - DRM_DEV_ERROR(dev, "failed to install IRQ handler\n"); > - goto err_msm_uninit; > - } > - } > - > ret = drm_dev_register(ddev, 0); > if (ret) > goto err_msm_uninit; > @@ -467,6 +444,12 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv) > if (ret) > goto err_msm_uninit; > > + if (kms) { > + pm_runtime_get_sync(dev); > + msm_irq_install(ddev, kms->irq); > + pm_runtime_put_sync(dev); > + } > + > drm_kms_helper_poll_init(ddev); > > return 0;
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 6665c5a..ab42e9a 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -132,15 +132,6 @@ static int msm_irq_install(struct drm_device *dev, unsigned int irq) return 0; } -static void msm_irq_uninstall(struct drm_device *dev) -{ - struct msm_drm_private *priv = dev->dev_private; - struct msm_kms *kms = priv->kms; - - kms->funcs->irq_uninstall(kms); - free_irq(kms->irq, dev); -} - struct msm_vblank_work { struct work_struct work; int crtc_id; @@ -232,10 +223,6 @@ static int msm_drm_uninit(struct device *dev) drm_mode_config_cleanup(ddev); - pm_runtime_get_sync(dev); - msm_irq_uninstall(ddev); - pm_runtime_put_sync(dev); - if (kms && kms->funcs) kms->funcs->destroy(kms); @@ -437,16 +424,6 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv) goto err_msm_uninit; } - if (kms) { - pm_runtime_get_sync(dev); - ret = msm_irq_install(ddev, kms->irq); - pm_runtime_put_sync(dev); - if (ret < 0) { - DRM_DEV_ERROR(dev, "failed to install IRQ handler\n"); - goto err_msm_uninit; - } - } - ret = drm_dev_register(ddev, 0); if (ret) goto err_msm_uninit; @@ -467,6 +444,12 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv) if (ret) goto err_msm_uninit; + if (kms) { + pm_runtime_get_sync(dev); + msm_irq_install(ddev, kms->irq); + pm_runtime_put_sync(dev); + } + drm_kms_helper_poll_init(ddev); return 0;
At msm initialize phase, msm_drm_init() is called to initialize modules sequentially. It will call msm_drm_uninit() to clean up initialized phase if any module initialization return failed. This patch move msm_irq_install() to the last step of msm_drm_init() after all modules are initialized successfully so that no msm_irq_unistall() required at msm_drm_uninit() if any module initialization failed happen at msm_drm_init(). Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com> --- drivers/gpu/drm/msm/msm_drv.c | 29 ++++++----------------------- 1 file changed, 6 insertions(+), 23 deletions(-)