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Commit 5b2cacce authored by Hans de Goede's avatar Hans de Goede Committed by Daniel Vetter
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i2c: designware-baytrail: Acquire P-Unit access on bus acquire

Acquire P-Unit access to stop others from accessing the P-Unit while the
PMIC i2c bus is in use. This is necessary because accessing the P-Unit
from the kernel may result in the P-Unit trying to access the PMIC i2c
bus, which results in a hang when it happens while we own the PMIC i2c
bus semaphore.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=155241


Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Tested-by: default avatartagorereddy <tagore.chandan@gmail.com>
Acked-by: default avatarWolfram Sang <wsa@the-dreams.de>
Acked-by: default avatarJarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170210102802.20898-10-hdegoede@redhat.com
parent fd476fa2
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