Re: [PATCH] i2c: virtio: mark device ready before registering the adapter
From: Wolfram Sang
Date: Sat May 30 2026 - 09:56:32 EST
On Fri, May 29, 2026 at 09:28:14AM -0500, Alexis Bouzigues via B4 Relay wrote:
> From: Alexis Bouzigues <BouziguesAlexis@xxxxxxxxxxxxx>
>
> virtio_i2c_probe() synchronously probes child i2c drivers on the bus,
> but peripherals may use the bus at probe for tasks like reading a chip
> id. The vhost-user-i2c backend stalls at such probes unless DRIVER_OK
> is already set before the virtqueue is first kicked.
>
> Set DRIVER_OK explicitly before i2c_add_adapter(), as done for the
> same reason in commit f5866db64f34 ("virtio_console: enable VQs
> early") and commit 71e4b8bf0482 ("virtio_rpmsg: set DRIVER_OK before
> using device").
>
> Signed-off-by: Alexis Bouzigues <BouziguesAlexis@xxxxxxxxxxxxx>
Applied to for-current, thanks!
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