Re: [PATCH] drm: Some ocd in drm_file.c

2019-05-09 Thread Daniel Vetter
On Thu, May 02, 2019 at 03:07:20PM +0100, Chris Wilson wrote:
> Quoting Daniel Vetter (2019-05-02 14:56:03)
> > Move the open helper around to avoid the forward decl, and give
> > drm_setup a drm_legacy_ prefix since it's all legacy stuff in there.
> > 
> > v2: Move drm_legacy_setup into drm_legacy_misc.c (Chris). The
> > counterpart in the form of drm_legacy_dev_reinit is there already too,
> > plus it fits perfectly into Dave's work of making DRIVER_LEGACY code
> > compile-time optional.
> > 
> > Cc: Chris Wilson 
> > Signed-off-by: Daniel Vetter 
> Reviewed-by: Chris Wilson 

Finally gotten around to ask for the backmerge so I can apply this. Thanks
a lot for your review.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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Re: [PATCH] drm: Some ocd in drm_file.c

2019-05-02 Thread Chris Wilson
Quoting Daniel Vetter (2019-05-02 14:56:03)
> Move the open helper around to avoid the forward decl, and give
> drm_setup a drm_legacy_ prefix since it's all legacy stuff in there.
> 
> v2: Move drm_legacy_setup into drm_legacy_misc.c (Chris). The
> counterpart in the form of drm_legacy_dev_reinit is there already too,
> plus it fits perfectly into Dave's work of making DRIVER_LEGACY code
> compile-time optional.
> 
> Cc: Chris Wilson 
> Signed-off-by: Daniel Vetter 
Reviewed-by: Chris Wilson 
-Chris
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Re: [PATCH] drm: Some ocd in drm_file.c

2019-05-02 Thread Chris Wilson
Quoting Daniel Vetter (2019-05-02 08:27:27)
> +static int drm_legacy_setup(struct drm_device * dev)
> +{
> +   int ret;
> +
> +   if (dev->driver->firstopen &&
> +   drm_core_check_feature(dev, DRIVER_LEGACY)) {
> +   ret = dev->driver->firstopen(dev);
> +   if (ret != 0)
> +   return ret;
> +   }

Did airlied land his patch to move legacy to a separate compilation
unit? If so, we could move this away and the compiler would have a field
day simplifying drm_open().
-Chris
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[PATCH] drm: Some ocd in drm_file.c

2019-05-02 Thread Daniel Vetter
Move the open helper around to avoid the forward decl, and give
drm_setup a drm_legacy_ prefix since it's all legacy stuff in there.

Signed-off-by: Daniel Vetter 
---
 drivers/gpu/drm/drm_file.c | 142 ++---
 1 file changed, 70 insertions(+), 72 deletions(-)

diff --git a/drivers/gpu/drm/drm_file.c b/drivers/gpu/drm/drm_file.c
index 233f114d2186..8437aa834245 100644
--- a/drivers/gpu/drm/drm_file.c
+++ b/drivers/gpu/drm/drm_file.c
@@ -100,8 +100,6 @@ DEFINE_MUTEX(drm_global_mutex);
  * :ref:`IOCTL support in the userland interfaces chapter`.
  */
 
-static int drm_open_helper(struct file *filp, struct drm_minor *minor);
-
 /**
  * drm_file_alloc - allocate file context
  * @minor: minor to allocate on
@@ -273,76 +271,6 @@ static void drm_close_helper(struct file *filp)
drm_file_free(file_priv);
 }
 
-static int drm_setup(struct drm_device * dev)
-{
-   int ret;
-
-   if (dev->driver->firstopen &&
-   drm_core_check_feature(dev, DRIVER_LEGACY)) {
-   ret = dev->driver->firstopen(dev);
-   if (ret != 0)
-   return ret;
-   }
-
-   ret = drm_legacy_dma_setup(dev);
-   if (ret < 0)
-   return ret;
-
-
-   DRM_DEBUG("\n");
-   return 0;
-}
-
-/**
- * drm_open - open method for DRM file
- * @inode: device inode
- * @filp: file pointer.
- *
- * This function must be used by drivers as their _operations.open method.
- * It looks up the correct DRM device and instantiates all the per-file
- * resources for it. It also calls the _driver.open driver callback.
- *
- * RETURNS:
- *
- * 0 on success or negative errno value on falure.
- */
-int drm_open(struct inode *inode, struct file *filp)
-{
-   struct drm_device *dev;
-   struct drm_minor *minor;
-   int retcode;
-   int need_setup = 0;
-
-   minor = drm_minor_acquire(iminor(inode));
-   if (IS_ERR(minor))
-   return PTR_ERR(minor);
-
-   dev = minor->dev;
-   if (!dev->open_count++)
-   need_setup = 1;
-
-   /* share address_space across all char-devs of a single device */
-   filp->f_mapping = dev->anon_inode->i_mapping;
-
-   retcode = drm_open_helper(filp, minor);
-   if (retcode)
-   goto err_undo;
-   if (need_setup) {
-   retcode = drm_setup(dev);
-   if (retcode) {
-   drm_close_helper(filp);
-   goto err_undo;
-   }
-   }
-   return 0;
-
-err_undo:
-   dev->open_count--;
-   drm_minor_release(minor);
-   return retcode;
-}
-EXPORT_SYMBOL(drm_open);
-
 /*
  * Check whether DRI will run on this CPU.
  *
@@ -424,6 +352,76 @@ static int drm_open_helper(struct file *filp, struct 
drm_minor *minor)
return 0;
 }
 
+static int drm_legacy_setup(struct drm_device * dev)
+{
+   int ret;
+
+   if (dev->driver->firstopen &&
+   drm_core_check_feature(dev, DRIVER_LEGACY)) {
+   ret = dev->driver->firstopen(dev);
+   if (ret != 0)
+   return ret;
+   }
+
+   ret = drm_legacy_dma_setup(dev);
+   if (ret < 0)
+   return ret;
+
+
+   DRM_DEBUG("\n");
+   return 0;
+}
+
+/**
+ * drm_open - open method for DRM file
+ * @inode: device inode
+ * @filp: file pointer.
+ *
+ * This function must be used by drivers as their _operations.open method.
+ * It looks up the correct DRM device and instantiates all the per-file
+ * resources for it. It also calls the _driver.open driver callback.
+ *
+ * RETURNS:
+ *
+ * 0 on success or negative errno value on falure.
+ */
+int drm_open(struct inode *inode, struct file *filp)
+{
+   struct drm_device *dev;
+   struct drm_minor *minor;
+   int retcode;
+   int need_setup = 0;
+
+   minor = drm_minor_acquire(iminor(inode));
+   if (IS_ERR(minor))
+   return PTR_ERR(minor);
+
+   dev = minor->dev;
+   if (!dev->open_count++)
+   need_setup = 1;
+
+   /* share address_space across all char-devs of a single device */
+   filp->f_mapping = dev->anon_inode->i_mapping;
+
+   retcode = drm_open_helper(filp, minor);
+   if (retcode)
+   goto err_undo;
+   if (need_setup) {
+   retcode = drm_legacy_setup(dev);
+   if (retcode) {
+   drm_close_helper(filp);
+   goto err_undo;
+   }
+   }
+   return 0;
+
+err_undo:
+   dev->open_count--;
+   drm_minor_release(minor);
+   return retcode;
+}
+EXPORT_SYMBOL(drm_open);
+
 void drm_lastclose(struct drm_device * dev)
 {
DRM_DEBUG("\n");
-- 
2.20.1

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