[rtc-linux] Re: [PATCH 4/6] rtc: rv8803: Always apply the I²C workaround

[Alexandre Belloni <alexandre.belloni@free-electrons.com>]

On 21/07/2016 at 12:41:30 +0200, Beno=C3=AEt Th=C3=A9baudeau wrote :
> The I=C2=B2C NACK issue of the RV-8803 may occur after any I=C2=B2C START
> condition, depending on the timings. Consequently, the workaround must
> be applied for all the I=C2=B2C transfers.
>=20
> This commit abstracts the I=C2=B2C transfer code into register access
> functions. This avoids duplicating the I=C2=B2C workaround everywhere. Th=
is
> also avoids the duplication of the code handling the return value of
> i2c_smbus_read_i2c_block_data(). Error messages are issued in case of
> definitive register access failures (if the workaround fails). This
> change also makes the I=C2=B2C transfer return value checks consistent.
>=20

Well, my initial idea was that the workaround is actually needed only
for operations that are not restartable from userspace.

Did you it that bug? On which RTC?

--=20
Alexandre Belloni, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com

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