On Mon, Jan 17, 2022 at 09:12:37PM +0530, Jagan Teki wrote: > On Mon, Dec 13, 2021 at 10:32 PM Maxime Ripard <maxime@xxxxxxxxxx> wrote: > > > > On Fri, Dec 10, 2021 at 04:47:06PM +0530, Jagan Teki wrote: > > > Existing host driver will keep looking for DRM pointer in > > > sun6i_dsi_attach and defers even if the particular DSI device > > > is found for the first time. Meanwhile it triggers the bind > > > callback and gets the DRM pointer and then continues the > > > sun6i_dsi_attach. > > > > > > This makes a deadlock situation if sun6i_dsi_attach is trying > > > to find the bridge. > > > > I'm not sure what you mean by deadlock here, there's no lock involved? > > deadlock parse here for general understanding, where bind is trying to > attach bridge but drm pointer is not available that point and drm > pointer will available only when bind done. This is what I'm calling > as deadlock here. Have you read: https://www.kernel.org/doc/html/latest/gpu/drm-kms-helpers.html#special-care-with-mipi-dsi-bridges Maxime
Attachment:
signature.asc
Description: PGP signature
