diff options
| author | Alexis Bouzigues <BouziguesAlexis@JohnDeere.com> | 2026-05-29 09:28:14 -0500 |
|---|---|---|
| committer | Wolfram Sang <wsa+renesas@sang-engineering.com> | 2026-05-30 15:56:07 +0200 |
| commit | 1d774589f924056b8403e271fdecaf9a803a50fc (patch) | |
| tree | e3c4046812d76509a5c53dcfd8b4005860440dd8 /drivers | |
| parent | e2aecff95bc6d59030332959a18f8c9f654961be (diff) | |
i2c: virtio: mark device ready before registering the adapter
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@JohnDeere.com>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/i2c/busses/i2c-virtio.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/i2c/busses/i2c-virtio.c b/drivers/i2c/busses/i2c-virtio.c index 7b0b0bff8000..5da6fef92bec 100644 --- a/drivers/i2c/busses/i2c-virtio.c +++ b/drivers/i2c/busses/i2c-virtio.c @@ -222,6 +222,8 @@ static int virtio_i2c_probe(struct virtio_device *vdev) */ ACPI_COMPANION_SET(&vi->adap.dev, ACPI_COMPANION(vdev->dev.parent)); + virtio_device_ready(vdev); + ret = i2c_add_adapter(&vi->adap); if (ret) virtio_i2c_del_vqs(vdev); |