Re: [PATCH] Revert "drm/mipi-dsi: Set the fwnode for mipi_dsi_device"

["gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>]

On Mon, Oct 28, 2024 at 06:08:15AM +0000, Jason-JH Lin (林睿祥) wrote:
> On Mon, 2024-10-28 at 06:38 +0100, Greg KH wrote:
> > External email : Please do not click links or open attachments until
> > you have verified the sender or the content.
> > 
> > 
> > On Thu, Oct 24, 2024 at 06:30:01PM +0800, Jason-JH.Lin via B4 Relay
> > wrote:
> > > From: "Jason-JH.Lin" <jason-jh.lin@mediatek.com>
> > > 
> > > This reverts commit ac88a1f41f93499df6f50fd18ea835e6ff4f3200.
> > > 
> > > Reason for revert:
> > > 1. The commit [1] does not land on linux-5.15, so this patch does
> > > not
> > > fix anything.
> > > 
> > > 2. Since the fw_device improvements series [2] does not land on
> > > linux-5.15, using device_set_fwnode() causes the panel to flash
> > > during
> > > bootup.
> > > 
> > > Incorrect link management may lead to incorrect device
> > > initialization,
> > > affecting firmware node links and consumer relationships.
> > > The fwnode setting of panel to the DSI device would cause a DSI
> > > initialization error without series[2], so this patch was reverted
> > > to
> > > avoid using the incomplete fw_devlink functionality.
> > > 
> > > [1] commit 3fb16866b51d ("driver core: fw_devlink: Make cycle
> > > detection more robust")
> > > [2] Link: 
> > > https://lore.kernel.org/all/20230207014207.1678715-1-saravanak@google.com
> > > 
> > > Cc: stable@vger.kernel.org # 5.15.169
> > 
> > What about 5.10.y and 5.4.y as well?  Aren't those also affected?
> 
> Oh, Yes.
> 
> I'll send v3 for these versions as well.

Thank you.

> BTW, how can I know what other branches should I revert the patch as
> well? Just in case I missed it in another branch.

You can look at all the branches to verify if it has been applied or
not.  There are some tools that do this for you, I use the one I created
that can be found at:
	https://git.sr.ht/~gregkh/linux-stable_commit_tree

thanks,

greg k-h