diff options
| author | Prashanth K <quic_prashk@quicinc.com> | 2023-08-01 14:33:52 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-08-04 14:57:04 +0200 |
| commit | 8e21a620c7e6e00347ade1a6ed4967b359eada5a (patch) | |
| tree | bf4a740a9a432c725994a18ea366a8aeb299b1a7 | |
| parent | 65dadb2beeb7360232b09ebc4585b54475dfee06 (diff) | |
usb: common: usb-conn-gpio: Prevent bailing out if initial role is none
Currently if we bootup a device without cable connected, then
usb-conn-gpio won't call set_role() because last_role is same
as current role. This happens since last_role gets initialised
to zero during the probe.
To avoid this, add a new flag initial_detection into struct
usb_conn_info, which prevents bailing out during initial
detection.
Cc: <stable@vger.kernel.org> # 5.4
Fixes: 4602f3bff266 ("usb: common: add USB GPIO based connection detection driver")
Signed-off-by: Prashanth K <quic_prashk@quicinc.com>
Tested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/1690880632-12588-1-git-send-email-quic_prashk@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/common/usb-conn-gpio.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/usb/common/usb-conn-gpio.c b/drivers/usb/common/usb-conn-gpio.c index 766005d20bae..501e8bc9738e 100644 --- a/drivers/usb/common/usb-conn-gpio.c +++ b/drivers/usb/common/usb-conn-gpio.c @@ -42,6 +42,7 @@ struct usb_conn_info { struct power_supply_desc desc; struct power_supply *charger; + bool initial_detection; }; /* @@ -86,11 +87,13 @@ static void usb_conn_detect_cable(struct work_struct *work) dev_dbg(info->dev, "role %s -> %s, gpios: id %d, vbus %d\n", usb_role_string(info->last_role), usb_role_string(role), id, vbus); - if (info->last_role == role) { + if (!info->initial_detection && info->last_role == role) { dev_warn(info->dev, "repeated role: %s\n", usb_role_string(role)); return; } + info->initial_detection = false; + if (info->last_role == USB_ROLE_HOST && info->vbus) regulator_disable(info->vbus); @@ -258,6 +261,7 @@ static int usb_conn_probe(struct platform_device *pdev) device_set_wakeup_capable(&pdev->dev, true); /* Perform initial detection */ + info->initial_detection = true; usb_conn_queue_dwork(info, 0); return 0; |