diff options
| author | Maciej Żenczykowski <[email protected]> | 2021-07-01 04:48:31 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2021-07-21 10:04:19 +0200 |
| commit | ec017d6b60f8aa400987fe95cd839e9ba5dda41d (patch) | |
| tree | 255b7db453d000e084ceddcf1a0e5220e5714225 | |
| parent | cf4e2e880bde13af103d229be261e8f80c37921f (diff) | |
usb: gadget: f_ncm: remove check for NULL skb_tx_data in timer function
This condition is already checked for in ncm_wrap_ntb(),
except that that check is done with eth_dev->lock held
(it is grabbed by eth_start_xmit).
It's best to not be reaching into ncm struct without locks held.
Cc: Brooke Basile <[email protected]>
Cc: "Bryan O'Donoghue" <[email protected]>
Cc: Felipe Balbi <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Lorenzo Colitti <[email protected]>
Signed-off-by: Maciej Żenczykowski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
| -rw-r--r-- | drivers/usb/gadget/function/f_ncm.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/usb/gadget/function/f_ncm.c b/drivers/usb/gadget/function/f_ncm.c index e45a938424a4..77f55b3c805a 100644 --- a/drivers/usb/gadget/function/f_ncm.c +++ b/drivers/usb/gadget/function/f_ncm.c @@ -1156,8 +1156,7 @@ static enum hrtimer_restart ncm_tx_timeout(struct hrtimer *data) struct f_ncm *ncm = container_of(data, struct f_ncm, task_timer); struct net_device *netdev = READ_ONCE(ncm->netdev); - /* Only send if data is available. */ - if (netdev && ncm->skb_tx_data) { + if (netdev) { /* XXX This allowance of a NULL skb argument to ndo_start_xmit * XXX is not sane. The gadget layer should be redesigned so * XXX that the dev->wrap() invocations to build SKBs is transparent |