diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2017-02-10 11:27:59 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2017-03-02 15:46:35 +0100 |
| commit | 5b2cacceb7a877f5eea60ffc7bb6ccd62c4d51cc (patch) | |
| tree | 13b4bed1050c730504b2554e3c9e177d236f9f92 /drivers/w1/slaves/w1_ds2760.c | |
| parent | fd476fa22a1f432658b799b023f351f291f2db8b (diff) | |
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: Hans de Goede <hdegoede@redhat.com>
Tested-by: tagorereddy <tagore.chandan@gmail.com>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170210102802.20898-10-hdegoede@redhat.com
Diffstat (limited to 'drivers/w1/slaves/w1_ds2760.c')
0 files changed, 0 insertions, 0 deletions