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authorAndre Naujoks <nautsch2@gmail.com>2013-09-13 19:37:11 +0200
committerDavid S. Miller <davem@davemloft.net>2013-09-20 15:38:26 -0400
commitcc9fa74e2a195f7bab27fbbc4896d2fe3ec32150 (patch)
tree73ac9a9033f828b7130f4717005eb4404b8e67c5 /lib/hexdump.c
parentdcb30e659287a6b40dafed1362532da42ec27229 (diff)
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slip/slcan: added locking in wakeup function
The locking is needed, since the the internal buffer for the CAN frames is changed during the wakeup call. This could cause buffer inconsistencies under high loads, especially for the outgoing short CAN packet skbuffs. The needed locks led to deadlocks before commit "5ede52538ee2b2202d9dff5b06c33bfde421e6e4 tty: Remove extra wakeup from pty write() path", which removed the direct callback to the wakeup function from the tty layer. As slcan.c is based on slip.c the issue in the original code is fixed, too. Signed-off-by: Andre Naujoks <nautsch2@gmail.com> Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'lib/hexdump.c')
0 files changed, 0 insertions, 0 deletions