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| author | Maciej W. Rozycki <macro@linux-mips.org> | 2014-07-05 15:14:30 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-07-08 15:30:11 -0700 |
| commit | 6329fe5c4e61655bcb8456805d2c485f791b50cc (patch) | |
| tree | 5243eb413f7807356969eb4ed844f6e330aace5d /Documentation/rt-mutex-design.txt | |
| parent | d68ab591f874cf752101ac77b08c01123b6f3a2e (diff) | |
| download | linux-6329fe5c4e61655bcb8456805d2c485f791b50cc.tar.gz linux-6329fe5c4e61655bcb8456805d2c485f791b50cc.tar.bz2 linux-6329fe5c4e61655bcb8456805d2c485f791b50cc.zip | |
defxx: Discard DMA maps on buffer deallocation
Prearranged receive DMA bounce buffer mappings are not released in the
card reboot/shutdown path. That does not affect frame reception, but
probably explains the random segmentation fault I observed the other day
on interface shutdown. Card is rebooted as required by the spec in the
process of ring fault recovery when a PC Trace signal has been received.
This change fixes the problem in an obvious manner.
Reported-by: Robert Coerver <Robert.Coerver@ll.mit.edu>
Tested-by: Robert Coerver <Robert.Coerver@ll.mit.edu>
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/rt-mutex-design.txt')
0 files changed, 0 insertions, 0 deletions