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[meta-oe,v2] android-tools-conf-configfs: handle multiple UDC controllers

Message ID 20260123175019.4072-2-quaresma.jose@gmail.com
State Under Review
Headers show
Series [meta-oe,v2] android-tools-conf-configfs: handle multiple UDC controllers | expand

Commit Message

Jose Quaresma Jan. 23, 2026, 5:50 p.m. UTC
From: Shoudi Li <shoudil@qti.qualcomm.com>

For the boards with multiple UDC ports, adb funtion will be impacted due
to below error.

ls /sys/class/udc/ > /sys/kernel/config/usb_gadget/adb/UDC
ls: write error: Device or resource busy

Signed-off-by: Shoudi Li <shoudil@qti.qualcomm.com>
Signed-off-by: Jose Quaresma <jose.quaresma@oss.qualcomm.com>
---
 .../android-tools-conf-configfs/android-gadget-start        | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

Comments

Dmitry Baryshkov Jan. 24, 2026, 8:06 p.m. UTC | #1
On Fri, Jan 23, 2026 at 05:50:20PM +0000, Jose Quaresma wrote:
> From: Shoudi Li <shoudil@qti.qualcomm.com>
> 
> For the boards with multiple UDC ports, adb funtion will be impacted due
> to below error.
> 
> ls /sys/class/udc/ > /sys/kernel/config/usb_gadget/adb/UDC
> ls: write error: Device or resource busy

Ok, it is imacted, what is to be done?

> 
> Signed-off-by: Shoudi Li <shoudil@qti.qualcomm.com>
> Signed-off-by: Jose Quaresma <jose.quaresma@oss.qualcomm.com>
> ---
>  .../android-tools-conf-configfs/android-gadget-start        | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/meta-oe/dynamic-layers/selinux/recipes-devtool/android-tools/android-tools-conf-configfs/android-gadget-start b/meta-oe/dynamic-layers/selinux/recipes-devtool/android-tools/android-tools-conf-configfs/android-gadget-start
> index ca6c3df275..76b5e29624 100644
> --- a/meta-oe/dynamic-layers/selinux/recipes-devtool/android-tools/android-tools-conf-configfs/android-gadget-start
> +++ b/meta-oe/dynamic-layers/selinux/recipes-devtool/android-tools/android-tools-conf-configfs/android-gadget-start
> @@ -2,6 +2,8 @@
>  
>  set -e
>  
> -sleep 3
> +sleep 10

Why?

>  
> -ls /sys/class/udc/ > /sys/kernel/config/usb_gadget/adb/UDC
> +ls /sys/class/udc/ | head -n 1 | xargs echo -n > /sys/kernel/config/usb_gadget/adb/UDC
> +
> +echo "Setting UDC $(ls /sys/class/udc/ | head -n 1) for USB ADB Gadget usage"
> -- 
> 2.52.0
> 
>
diff mbox series

Patch

diff --git a/meta-oe/dynamic-layers/selinux/recipes-devtool/android-tools/android-tools-conf-configfs/android-gadget-start b/meta-oe/dynamic-layers/selinux/recipes-devtool/android-tools/android-tools-conf-configfs/android-gadget-start
index ca6c3df275..76b5e29624 100644
--- a/meta-oe/dynamic-layers/selinux/recipes-devtool/android-tools/android-tools-conf-configfs/android-gadget-start
+++ b/meta-oe/dynamic-layers/selinux/recipes-devtool/android-tools/android-tools-conf-configfs/android-gadget-start
@@ -2,6 +2,8 @@ 
 
 set -e
 
-sleep 3
+sleep 10
 
-ls /sys/class/udc/ > /sys/kernel/config/usb_gadget/adb/UDC
+ls /sys/class/udc/ | head -n 1 | xargs echo -n > /sys/kernel/config/usb_gadget/adb/UDC
+
+echo "Setting UDC $(ls /sys/class/udc/ | head -n 1) for USB ADB Gadget usage"