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| author | Jean Delvare <khali@linux-fr.org> | 2012-06-29 14:47:19 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-06-30 02:03:25 +0400 |
| commit | b37d2a3a75cb0e72e18c29336cb2095b63dabfc8 (patch) | |
| tree | 212e01d73f40881626b54ef4811de3a061788989 /Documentation/hwmon/twl4030-madc-hwmon | |
| parent | a99817ca60d206be3645d156f755cf065e949c58 (diff) | |
| download | linux-b37d2a3a75cb0e72e18c29336cb2095b63dabfc8.tar.xz | |
[media] i2c: Export an unlocked flavor of i2c_transfer
Some drivers (in particular for TV cards) need exclusive access to
their I2C buses for specific operations. Export an unlocked flavor
of i2c_transfer to give them full control.
The unlocked flavor has the following limitations:
* Obviously, caller must hold the i2c adapter lock.
* No debug messages are logged. We don't want to log messages while
holding a rt_mutex.
* No check is done on the existence of adap->algo->master_xfer. It
is thus the caller's responsibility to ensure that the function is
OK to call.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'Documentation/hwmon/twl4030-madc-hwmon')
0 files changed, 0 insertions, 0 deletions