[PATCH v4] i2c/pasemi: PASemi I2C controller IRQ enablement

[Wolfram Sang]

On Sat, Nov 05, 2022 at 07:56:49AM -0400, Arminder Singh wrote:
> This patch adds IRQ support to the PASemi I2C controller driver to
> increase the performace of I2C transactions on platforms with PASemi I2C
> controllers. While primarily intended for Apple silicon platforms, this
> patch should also help in enabling IRQ support for older PASemi hardware
> as well should the need arise.
> 
> This version of the patch has been tested on an M1 Ultra Mac Studio,
> as well as an M1 MacBook Pro, and userspace launches successfully
> while using the IRQ path for I2C transactions.
> 
> Signed-off-by: Arminder Singh <arminders208 at outlook.com>

Applied to for-next, thanks! One thing, though:

> +		while (!(status & SMSTA_XEN) && timeout--) {
> +			msleep(1);

Checkpatch complained about this one:

WARNING: msleep < 20ms can sleep for up to 20ms; see Documentation/timers/timers-howto.rst

Not your issue because you were just moving this code around. But this
might be a candidate for future improvements, thiugh.

> +			status = reg_read(smbus, REG_SMSTA);
> +		}

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