Revert "i2c: rcar: remove spinlock"

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commit 91bfe2989a upstream.

This reverts commit 150b8be3cd.

The I2C core's per-adapter locks can't protect from IRQs, so the driver still
needs a spinlock to protect the register accesses.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Sergei Shtylyov 2014-08-24 00:44:09 +04:00 • committed by Greg Kroah-Hartman

parent 705ee1e247

commit 2fb2af14c2

1 changed files with 22 additions and 0 deletions

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drivers/i2c/busses/i2c-rcar.c

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