[PATCH] drm: drop DRIVER_HAVE_IRQ flag for some drivers

[PATCH] drm: drop DRIVER_HAVE_IRQ flag for some drivers

[Shawn Guo]

The drm driver feature flag DRIVER_HAVE_IRQ is used to indicates whether
the driver has an IRQ handler managed by the DRM core.  Some drivers,
armada, etnaviv, kirin and sti, set this flag without .irq_handler setup
in drm_driver.  These drivers manage IRQ handler by themselves and the
flag DRIVER_HAVE_IRQ makes no sense there.

Drop the flag for these drivers to avoid confusion.

Signed-off-by: Shawn Guo <shawnguo@kernel.org>
---
 drivers/gpu/drm/armada/armada_drv.c             | 2 +-
 drivers/gpu/drm/etnaviv/etnaviv_drv.c           | 3 +--
 drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c | 2 +-
 drivers/gpu/drm/sti/sti_drv.c                   | 2 +-
 4 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/armada/armada_drv.c b/drivers/gpu/drm/armada/armada_drv.c
index f5ebdd681445..1e0e68f608e4 100644
--- a/drivers/gpu/drm/armada/armada_drv.c
+++ b/drivers/gpu/drm/armada/armada_drv.c
@@ -211,7 +211,7 @@ static struct drm_driver armada_drm_driver = {
 	.desc			= "Armada SoC DRM",
 	.date			= "20120730",
 	.driver_features	= DRIVER_GEM | DRIVER_MODESET |
-				  DRIVER_HAVE_IRQ | DRIVER_PRIME,
+				  DRIVER_PRIME,
 	.ioctls			= armada_ioctls,
 	.fops			= &armada_drm_fops,
 };
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.c b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
index ffd1b32caa8d..fd0ed61565f3 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_drv.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
@@ -488,8 +488,7 @@ static const struct file_operations fops = {
 };
 
 static struct drm_driver etnaviv_drm_driver = {
-	.driver_features    = DRIVER_HAVE_IRQ |
-				DRIVER_GEM |
+	.driver_features    = DRIVER_GEM |
 				DRIVER_PRIME |
 				DRIVER_RENDER,
 	.open               = etnaviv_open,
diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
index 1edd9bc80294..1fc2f502d20d 100644
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
@@ -169,7 +169,7 @@ static int kirin_gem_cma_dumb_create(struct drm_file *file,
 
 static struct drm_driver kirin_drm_driver = {
 	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME |
-				  DRIVER_ATOMIC | DRIVER_HAVE_IRQ,
+				  DRIVER_ATOMIC,
 	.fops			= &kirin_drm_fops,
 
 	.gem_free_object_unlocked = drm_gem_cma_free_object,
diff --git a/drivers/gpu/drm/sti/sti_drv.c b/drivers/gpu/drm/sti/sti_drv.c
index 96bd3d08b2d4..f8311b2bc84e 100644
--- a/drivers/gpu/drm/sti/sti_drv.c
+++ b/drivers/gpu/drm/sti/sti_drv.c
@@ -282,7 +282,7 @@ static const struct file_operations sti_driver_fops = {
 };
 
 static struct drm_driver sti_driver = {
-	.driver_features = DRIVER_HAVE_IRQ | DRIVER_MODESET |
+	.driver_features = DRIVER_MODESET |
 	    DRIVER_GEM | DRIVER_PRIME | DRIVER_ATOMIC,
 	.gem_free_object_unlocked = drm_gem_cma_free_object,
 	.gem_vm_ops = &drm_gem_cma_vm_ops,
-- 
1.9.1

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Re: [PATCH] drm: drop DRIVER_HAVE_IRQ flag for some drivers

[Russell King - ARM Linux]

On Fri, Aug 12, 2016 at 01:15:37PM +0800, Shawn Guo wrote:
> The drm driver feature flag DRIVER_HAVE_IRQ is used to indicates whether
> the driver has an IRQ handler managed by the DRM core.  Some drivers,
> armada, etnaviv, kirin and sti, set this flag without .irq_handler setup
> in drm_driver.  These drivers manage IRQ handler by themselves and the
> flag DRIVER_HAVE_IRQ makes no sense there.

It's worth noting that DRIVER_HAVE_IRQ was required prior to:

commit 4984979b9b9025a1cb9a9bea089d31a3e01ccff1
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Wed Aug 28 15:02:37 2013 +0200

    drm/irq: simplify irq checks in drm_wait_vblank

to have working vblank.  As this is no longer the case, this change
looks sane.

> 
> Drop the flag for these drivers to avoid confusion.
> 
> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
> ---
>  drivers/gpu/drm/armada/armada_drv.c             | 2 +-
>  drivers/gpu/drm/etnaviv/etnaviv_drv.c           | 3 +--

For both of these,

Acked-by: Russell King <rmk+kernel@armlinux.org.uk>

-- 
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
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Re: [PATCH] drm: drop DRIVER_HAVE_IRQ flag for some drivers

[Shawn Guo]

On Fri, Aug 12, 2016 at 03:03:31PM +0100, Russell King - ARM Linux wrote:
> On Fri, Aug 12, 2016 at 01:15:37PM +0800, Shawn Guo wrote:
> > The drm driver feature flag DRIVER_HAVE_IRQ is used to indicates whether
> > the driver has an IRQ handler managed by the DRM core.  Some drivers,
> > armada, etnaviv, kirin and sti, set this flag without .irq_handler setup
> > in drm_driver.  These drivers manage IRQ handler by themselves and the
> > flag DRIVER_HAVE_IRQ makes no sense there.
> 
> It's worth noting that DRIVER_HAVE_IRQ was required prior to:
> 
> commit 4984979b9b9025a1cb9a9bea089d31a3e01ccff1
> Author: Daniel Vetter <daniel.vetter@ffwll.ch>
> Date:   Wed Aug 28 15:02:37 2013 +0200
> 
>     drm/irq: simplify irq checks in drm_wait_vblank
> 
> to have working vblank.  As this is no longer the case, this change
> looks sane.

Okay, I will improve the commit log and send v2 soon.

> 
> > 
> > Drop the flag for these drivers to avoid confusion.
> > 
> > Signed-off-by: Shawn Guo <shawnguo@kernel.org>
> > ---
> >  drivers/gpu/drm/armada/armada_drv.c             | 2 +-
> >  drivers/gpu/drm/etnaviv/etnaviv_drv.c           | 3 +--
> 
> For both of these,
> 
> Acked-by: Russell King <rmk+kernel@armlinux.org.uk>

Thanks, Russell.

Shawn
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