Messages in this thread | | | Date | Mon, 20 Mar 2023 12:52:00 +0000 | From | Mark Brown <> | Subject | Re: [PATCH v2 2/2] spi: loongson: add bus driver for the loongson spi controller |
| |
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. [unhandled content-type:application/pgp-signature] | |