cdc-acm: Fix long standing abuse of tty->low_latency
commit7a9a65ced11ece416b730d6f21040a18e62d78a8
authorAlan Cox <alan@lxorguk.ukuu.org.uk>
Tue, 14 Apr 2009 13:57:36 +0000 (14 14:57 +0100)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 14 Apr 2009 15:48:50 +0000 (14 08:48 -0700)
tree6110bcec1e1e0983188f2c4a11930ca948e99cdd
parentb21597d0268983f8f9e8b563494f75490403e948
cdc-acm: Fix long standing abuse of tty->low_latency

ACM sets the low latency flag but calls the flip buffer routines from
IRQ context which isn't permitted (and as of 2.6.29 causes a warning
hence this one was caught)

Fortunatelt ACM doesn't need to set this flag in the first place as it
only set it to work around problems in ancient (pre tty flip rewrite)
kernels.

Reported-by: Chuck Ebbert <cebbert@redhat.com>
Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
drivers/usb/class/cdc-acm.c