On 02/10/2024 21:38, Saravana Kannan wrote:
On Wed, Oct 2, 2024 at 11:30 AM Jon Hunter <jonathanh@xxxxxxxxxx> wrote:
Hi Greg,
On 16/09/2024 18:49, Greg Kroah-Hartman wrote:
On Mon, Sep 16, 2024 at 03:50:34PM +0100, Jon Hunter wrote:
On 11/09/2024 15:32, Greg Kroah-Hartman wrote:
On Tue, Sep 10, 2024 at 02:00:19PM +0100, Jon Hunter wrote:
The following error messages are observed on boot with the Tegra234
Jetson AGX Orin board ...
tegra-xusb-padctl 3520000.padctl: Failed to create device link (0x180)
with 1-0008
tegra-xusb-padctl 3520000.padctl: Failed to create device link (0x180)
with 1-0008
tegra-xusb-padctl 3520000.padctl: Failed to create device link (0x180)
with 1-0008
In the above case, device_link_add() intentionally returns NULL because
these are SYNC_STATE_ONLY links and the device is already probed.
Therefore, the above messages are not actually errors. Fix this by
replicating the test from device_link_add() in the function
fw_devlink_create_devlink() and don't call device_link_add() if there
are no links to create.
Signed-off-by: Jon Hunter <jonathanh@xxxxxxxxxx>
What commit id does this fix?
Hard to say exactly. The above error message was first added with commit
3fb16866b51d ("driver core: fw_devlink: Make cycle detection more robust")
but at this time we did not have the support in place for Tegra234 USB. I am
guessing we first started seeing this when I enabled support for the type-c
controller in commit 16744314ee57 ("arm64: tegra: Populate USB Type-C
Controller for Jetson AGX Orin"). I can confirm if that is helpful?
That helps, I'll look at this after -rc1 is out, thanks!
Let me know if there is anything else I can answer on this one.
Hi Jon,
See this.
https://lore.kernel.org/all/c622df86-0372-450e-b3dd-ab93cd051d6f@notapiano/
Ignore my point 1. My point 2 still stands. I got busy and forgot to
reply to Nícolas.
I'm fine with either one of your patches as long as we define a
"useless link" function and use it in all the places.
Thanks! Yes I am also fine with Nicolas' fix too. I quite like the
dev_dbg() in Nicolas' version. I was wondering if we should define a
function for this check too.
Nicolas do you want to update your patch with a 'useless link' function?
I will be happy to test on my side. Looks like you identified the exact
patch that introduced this and have the appropriate fixes tag too.
Thanks
Jon
--
nvpublic
