diff options
| author | Jean Delvare <khali@linux-fr.org> | 2012-05-30 10:55:34 +0200 |
|---|---|---|
| committer | Jean Delvare <khali@endymion.delvare> | 2012-05-30 10:55:34 +0200 |
| commit | 838bfa6049fb84dc66c9c9bbeb3a968ec987fd3d (patch) | |
| tree | 5c6cf6d3d7dee7514f62b874b50bf88726144b11 /Documentation/i2c/functionality | |
| parent | 731a7378b81c2f5fa88ca1ae20b83d548d5613dc (diff) | |
| download | lwn-838bfa6049fb84dc66c9c9bbeb3a968ec987fd3d.tar.gz lwn-838bfa6049fb84dc66c9c9bbeb3a968ec987fd3d.zip | |
i2c-dev: Add support for I2C_M_RECV_LEN
As the bus driver side implementation of I2C_M_RECV_LEN is heavily
tied to SMBus, we can't support received length over 32 bytes, but
let's at least support that.
In practice, the caller will have to setup a buffer large enough to
cover the case where received length byte has value 32, so minimum
32 + 1 = 33 bytes, possibly more if there is a fixed number of bytes
added for the specific slave (for example a checksum.)
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Tested-by: Douglas Gilbert <dgilbert@interlog.com>
Diffstat (limited to 'Documentation/i2c/functionality')
0 files changed, 0 insertions, 0 deletions