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[media] si2168: change the i2c gate to be mux-locked

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The root i2c adapter lock is then no longer held by the i2c mux during
accesses behind the i2c gate, and such accesses need to take that lock
just like any other ordinary i2c accesses do.

So, declare the i2c gate mux-locked, and zap the code that makes the
i2c accesses unlocked. But add a mutex so that firmware commands are
still serialized.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Antti Palosaari
2016-05-04 22:15:32 +02:00
committed by Wolfram Sang
parent 1ffcfaf195
commit e6d7ffcdf1
3 changed files with 22 additions and 64 deletions
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Documentation/i2c/i2c-topology
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@@ -56,7 +56,7 @@ In drivers/media/
dvb-frontends/m88ds3103 Parent-locked
dvb-frontends/rtl2830 Parent-locked
dvb-frontends/rtl2832 Parent-locked
dvb-frontends/si2168 Parent-locked
dvb-frontends/si2168 Mux-locked
usb/cx231xx/ Parent-locked