Messages in this thread | | | Date | Thu, 14 Jul 2022 10:49:38 +0200 | From | Takashi Iwai <> | Subject | Re: [PATCH] ALSA: usb-audio: Use atomic_try_cmpxchg in ep_state_update |
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On Wed, 13 Jul 2022 17:19:46 +0200, Uros Bizjak wrote: > > Use atomic_try_cmpxchg instead of atomic_cmpxchg (*ptr, old, new) == old in > ep_state_update. x86 CMPXCHG instruction returns success in ZF flag, > so this change saves a compare after cmpxchg (and related move instruction > in front of cmpxchg). > > No functional change intended. > > Signed-off-by: Uros Bizjak <ubizjak@gmail.com> > Cc: Takashi Iwai <tiwai@suse.de>
Thanks, applied.
Takashi
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