Hi Gabriel,
2017-01-12 Gabriel Krisman Bertazi <krisman@xxxxxxxxxxxxxxx>:
> This avoids using the deprecated drm_get_pci_dev() and load() hook
> interfaces in the qxl driver.
>
> The only tricky part is to ensure TTM debugfs initialization
> happens after the debugfs root node is created, which is done by moving
> that code into the debufs_init() hook. Since the hook is called 3 times
> for each minor function, we make sure it is only executed for the
> primary minor.
>
> Tested on qemu with igt and running a WM on top of X.
>
> Signed-off-by: Gabriel Krisman Bertazi <krisman@xxxxxxxxxxxxxxx>
> CC: Dave Airlie <airlied@xxxxxxxxxx>
> CC: Daniel Vetter <daniel.vetter@xxxxxxxx>
> CC: dri-devel@xxxxxxxxxxxxxxxxxxxxx
> ---
> drivers/gpu/drm/qxl/qxl_debugfs.c | 12 ++++++++
> drivers/gpu/drm/qxl/qxl_drv.c | 58 +++++++++++++++++++++++++++++++++++++--
> drivers/gpu/drm/qxl/qxl_drv.h | 7 ++++-
> drivers/gpu/drm/qxl/qxl_kms.c | 40 ++-------------------------
> drivers/gpu/drm/qxl/qxl_ttm.c | 8 +-----
> 5 files changed, 77 insertions(+), 48 deletions(-)
>
> diff --git a/drivers/gpu/drm/qxl/qxl_debugfs.c b/drivers/gpu/drm/qxl/qxl_debugfs.c
> index 241af9131dc8..417b538b3ed8 100644
> --- a/drivers/gpu/drm/qxl/qxl_debugfs.c
> +++ b/drivers/gpu/drm/qxl/qxl_debugfs.c
> @@ -84,8 +84,20 @@ int
> qxl_debugfs_init(struct drm_minor *minor)
> {
> #if defined(CONFIG_DEBUG_FS)
> + int r;
> + struct qxl_device *dev =
> + (struct qxl_device *) minor->dev->dev_private;
> +
> drm_debugfs_create_files(qxl_debugfs_list, QXL_DEBUGFS_ENTRIES,
> minor->debugfs_root, minor);
> +
> + if (minor->type == DRM_MINOR_PRIMARY) {
I'm not confortable with exposing minor->type here and making qxl
the first driver to use it outside of drm core. Don't we have any other
way.
I see that inside qxl_debugfs_add_files() we have a check for already
registered files. Wouldn't that or some modification around work for
this?
Gustavo
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