Re: [PATCH] staging/vboxvideo: Another FIXME item

From: Hans de Goede
Date: Thu Feb 21 2019 - 11:40:11 EST


Hi,

On 21-02-19 16:59, Daniel Vetter wrote:
Found while grepping around.

Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
Cc: Hans de Goede <hdegoede@xxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Sam Ravnborg <sam@xxxxxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
Cc: Liviu Dudau <liviu.dudau@xxxxxxx>
---
drivers/staging/vboxvideo/vbox_irq.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/drivers/staging/vboxvideo/vbox_irq.c b/drivers/staging/vboxvideo/vbox_irq.c
index 195484713365..89944134ea86 100644
--- a/drivers/staging/vboxvideo/vbox_irq.c
+++ b/drivers/staging/vboxvideo/vbox_irq.c
@@ -123,6 +123,11 @@ static void vbox_update_mode_hints(struct vbox_private *vbox)
validate_or_set_position_hints(vbox);
drm_modeset_lock_all(dev);
+ /*
+ * FIXME: this needs to use drm_connector_list_iter and some real
+ * locking for the actual data it changes, not the deprecated
+ * drm_modeset_lock_all() shotgun approach.
+ */

Question, are the locking expectations from the drm's core pov (for modesetting-drivers)
*fully* (and clearly) documented somewhere?

Regards,

Hans




list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
vbox_conn = to_vbox_connector(connector);