diff options
| author | Thommy Jakobsson <thommyj@gmail.com> | 2013-04-23 23:45:11 +0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2013-05-09 01:15:06 +0400 |
| commit | 73b82bf0bfbf58e6ff328d3726934370585f6e78 (patch) | |
| tree | 19c23412ef8e7fbf7353eeb7084bf96c962ed725 /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | db178340433f90e09ada35c174dfb2c84c2c71f4 (diff) | |
| download | linux-73b82bf0bfbf58e6ff328d3726934370585f6e78.tar.xz | |
B43: Handle DMA RX descriptor underrun
Add handling of rx descriptor underflow. This fixes a fault that could
happen on slow machines, where data is received faster than the CPU can
handle. In such a case the device will use up all rx descriptors and
refuse to send any more data before confirming that it is ok. This
patch enables necessary interrupt to discover such a situation and will
handle them by dropping everything in the ring buffer.
Reviewed-by: Michael Buesch <m@bues.ch>
Signed-off-by: Thommy Jakobsson <thommyj@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions