diff options
| author |   Steven A. Falco <sfalco@harris.com> | 2013-04-22 09:34:39 +0000 |
|---|---|---|
| committer |   Wolfram Sang <wsa@the-dreams.de> | 2013-04-23 20:18:34 +0200 |
| commit | c39e8e4354ce4daf23336de5daa28a3b01f00aa6 (patch) | |
| tree | 41ebb9ee4bd1323269c8a8c8849e361ef4910375 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | i2c: octeon: use HZ in timeout value (diff) | |
| download | linux-dev-c39e8e4354ce4daf23336de5daa28a3b01f00aa6.tar.xz linux-dev-c39e8e4354ce4daf23336de5daa28a3b01f00aa6.zip | |
i2c: xiic: must always write 16-bit words to TX_FIFO
The TX_FIFO register is 10 bits wide. The lower 8 bits are the data to be
written, while the upper two bits are flags to indicate stop/start.
The driver apparently attempted to optimize write access, by only writing a
byte in those cases where the stop/start bits are zero. However, we have
seen cases where the lower byte is duplicated onto the upper byte by the
hardware, which causes inadvertent stop/starts.
This patch changes the write access to the transmit FIFO to always be 16 bits
wide.
Signed off by: Steven A. Falco <sfalco@harris.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Cc: stable@kernel.org
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions