Messages in this thread | | | From | Linus Walleij <> | Date | Mon, 19 Nov 2018 13:20:46 +0100 | Subject | Re: [PATCH 2/3] pinctrl: stm32: protect configuration registers with a hwspinlock |
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On Tue, Nov 13, 2018 at 10:51 AM Benjamin Gaignard <benjamin.gaignard@linaro.org> wrote:
> If a hwspinlock if defined in device tree use it to protect > configuration registers. > > Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Patch applied with Alex' ACK.
Out of curiosity: what is it protecting against? I would guess simultaneous access from another CPU but the commit doesn't say.
Simultaneous access from two CPUs makes it extra important that all register access is read-modify-write, so I'd have a second check over the code to make sure this is the case.
Yours, Linus Walleij
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