RE: [Xen-devel] compile error of HVM pv drivers

["Zhao, Yunfeng" <yunfeng.zhao@xxxxxxxxx>]

>
>490:   list_for_each_entry_safe(vif_state, tmp,
>491:                            &accelerator->vif_states,
>492:                            link) {
>493:           /* Make sure there are no data path operations going on
*/
>494:           netif_poll_disable(vif_state->np->netdev);
>495:           netif_tx_lock_bh(vif_state->np->netdev);
>
>Which doesn't seem to match the error you're getting.  No "do" for
>example.
>
>I'll try and reproduce it, but haven't seen this before, and the
nearest
>gcc version I have easily to hand is 3.4.3
[Yunfeng]  The code I have is the same as yours.
netif_tx_lock_bh is a inline function which contains a macro of LOCK_HB
#define __LOCK(lock) \
  do { preempt_disable(); __acquire(lock); (void)(lock); } while (0)

#define __LOCK_BH(lock) \
  do { local_bh_disable(); __LOCK(lock); } while (0)

>
>Kieran

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