diff options
| author | Caleb Connolly | 2024-03-20 14:30:49 +0000 |
|---|---|---|
| committer | Mattijs Korpershoek | 2024-03-22 10:16:13 +0100 |
| commit | 341a172ef7867e3bfa90d6951997e5e2f168e188 (patch) | |
| tree | fe08a16263aae3240d5c8ad2a681976f361c6a5e /drivers/usb | |
| parent | 850b307789dca8dfff6d7cad57ba2ffbfbb5f6ed (diff) | |
usb: gadget: CDC ACM: call usb_gadget_initialize
To actually use the gadget the peripheral driver must be probed and we
must call g_dnl_clear_detach(). Otherwise acm_stdio_start() will always
fail to find a UDC on DT platforms.
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
Link: https://lore.kernel.org/r/20240320-b4-qcom-usb-v4-3-41be480172e1@linaro.org
Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/gadget/f_acm.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/usb/gadget/f_acm.c b/drivers/usb/gadget/f_acm.c index de42e0189e8..ba216128ab2 100644 --- a/drivers/usb/gadget/f_acm.c +++ b/drivers/usb/gadget/f_acm.c @@ -623,12 +623,21 @@ static void acm_stdio_puts(struct stdio_dev *dev, const char *str) static int acm_stdio_start(struct stdio_dev *dev) { + struct udevice *udc; int ret; if (dev->priv) { /* function already exist */ return 0; } + ret = udc_device_get_by_index(0, &udc); + if (ret) { + pr_err("USB init failed: %d\n", ret); + return ret; + } + + g_dnl_clear_detach(); + ret = g_dnl_register("usb_serial_acm"); if (ret) return ret; |