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USB: wdm: wdm_wwan_port_tx_complete mutex in atomic context

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commit 1fdc4dca35 upstream.

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: cac6fb015f ("usb: class: cdc-wdm: WWAN framework integration")
Cc: stable <stable@kernel.org>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Link: https://lore.kernel.org/r/20250401084749.175246-4-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Oliver Neukum
2025-04-01 10:45:40 +02:00
committed by Greg Kroah-Hartman
parent b02a3fef3e
commit 6261b99ef0
1 changed files with 1 additions and 1 deletions
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drivers/usb/class/cdc-wdm.c
+1 -1
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@@ -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);
}