On Mon, Apr 19, 2021 at 4:31 PM Andy Shevchenko <andy.shevchenko@xxxxxxxxx> wrote: > On Mon, Apr 19, 2021 at 8:32 AM Tzung-Bi Shih <tzungbi@xxxxxxxxxx> wrote: > > For example call trace: > > Please, shrink it to the necessary minimum. I'll snip the stack a bit in the next version. > > Uses spin lock in mtk_rmw instead. > > It's nice, but now the question is, can you have this function be > called in a non-IRQ context concurrently with IRQ accessing registers? Fixed in v2. See https://patchwork.ozlabs.org/project/linux-gpio/list/?series=239787 .
Re: [RESEND PATCH] pinctrl: mediatek: use spin lock in mtk_rmw
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- Subject: Re: [RESEND PATCH] pinctrl: mediatek: use spin lock in mtk_rmw
- From: Tzung-Bi Shih <tzungbi@xxxxxxxxxx>
- Date: Mon, 19 Apr 2021 17:36:42 +0800
- In-reply-to: <CAHp75VfgSaRmqg96KSabmwnf6xQRMM6GQi3XAv-cJb+Lhg91cQ@mail.gmail.com>
- References: <20210419052136.2475373-1-tzungbi@google.com> <CAHp75VfgSaRmqg96KSabmwnf6xQRMM6GQi3XAv-cJb+Lhg91cQ@mail.gmail.com>
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- [RESEND PATCH] pinctrl: mediatek: use spin lock in mtk_rmw
- From: Tzung-Bi Shih
- Re: [RESEND PATCH] pinctrl: mediatek: use spin lock in mtk_rmw
- From: Andy Shevchenko
- [RESEND PATCH] pinctrl: mediatek: use spin lock in mtk_rmw
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