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author | Bill Pemberton <wfp5p@virginia.edu> | 2013-03-13 09:50:15 -0400 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-03-13 12:32:47 -0700 |
commit | 27b351c5546008c640b3e65152f60ca74b3706f1 (patch) | |
tree | 766c1d602d3942be6ba24086c7752926f70197c5 /tools | |
parent | 3f8bc5e4da29c7e05edeca6b475abb4fb01a5a13 (diff) | |
download | linux-27b351c5546008c640b3e65152f60ca74b3706f1.tar.bz2 |
USB: quatech2: only write to the tty if the port is open.
The commit 2e124b4a390ca85325fae75764bef92f0547fa25 removed the checks
that prevented qt2_process_read_urb() from trying to put chars into
ttys that weren't actually opened. This resulted in 'tty is NULL'
warnings from flush_to_ldisc() when the device was used.
The devices use just one read urb for all ports. As a result
qt2_process_read_urb() may be called with the current port set to a
port number that has not been opened. Add a check if the port is open
before calling tty_flip_buffer_push().
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions