On Sat, Mar 18, 2023 at 02:07:16PM +0800, zhuyinbo wrote: > 在 2023/3/18 上午12:26, Mark Brown 写道: > > On Fri, Mar 17, 2023 at 04:29:50PM +0800, Yinbo Zhu wrote: > > As IIRC I mentioned last time setup() might be called while other > > transfers are happening and therefore shouldn't affect parallel > > operations on other devices. > I think add spin_lock in transfer_one interface that should be to fix this > issue, Do you think so? No, that doesn't help if setup() reconfigures the controller while it's doing a transfer. The issue is that the controller might be put into the wrong mode or run at the wrong speed.
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