sbs-battery: make writes to ManufacturerAccess optional

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According to the Smart Battery Data Specification, the use
of ManufacturerAcess (register 0x0) is implementation-defined.
It appears that some batteries use writes to this register
in order to implement certain functionality, but others may
simply NAK all writes to it. As a result, write failures to
ManufacturerAccess should not be used as an indicator of
battery presence, nor as a failure to enter sleep mode.

The failed write access was seen with SANYO AP13J3K.

Cc: Brian Norris <briannorris@chromium.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sebastian Reichel <sre@kernel.org>

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Guenter Roeck 2016-09-08 19:10:00 -07:00 • committed by Sebastian Reichel

parent 0610735928

commit 17c6d3979e

1 changed files with 15 additions and 14 deletions

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drivers/power/supply/sbs-battery.c

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