Commit 1fdc4dca authored by Oliver Neukum's avatar Oliver Neukum Committed by Greg Kroah-Hartman
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USB: wdm: wdm_wwan_port_tx_complete mutex in atomic context 



wdm_wwan_port_tx_complete is called from a completion
handler with irqs disabled and possible in IRQ context
usb_autopm_put_interface can take a mutex.
Hence usb_autopm_put_interface_async must be used.

Fixes: cac6fb01 ("usb: class: cdc-wdm: WWAN framework integration")
Cc: stable <stable@kernel.org>
Signed-off-by: default avatarOliver Neukum <oneukum@suse.com>
Link: https://lore.kernel.org/r/20250401084749.175246-4-oneukum@suse.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent c1846ed4

drivers/usb/class/cdc-wdm.c

+1 −1
Original line number Diff line number Diff line
@@ -879,7 +879,7 @@ static void wdm_wwan_port_tx_complete(struct urb *urb) 
	struct sk_buff *skb = urb->context;

	struct wdm_device *desc = skb_shinfo(skb)->destructor_arg;



	usb_autopm_put_interface(desc->intf);

	usb_autopm_put_interface_async(desc->intf);

	wwan_port_txon(desc->wwanp);

	kfree_skb(skb);

}