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| author | Rob Herring <rob.herring@calxeda.com> | 2013-09-24 21:05:58 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-09-25 18:10:56 -0700 |
| commit | f377775dc083506e2fd7739d8615971c46b5246e (patch) | |
| tree | 9fac95e32736d6a172db90ccc376043af9ef039c /Makefile | |
| parent | 469d6d0631386e6865a30c9ded87a5cc0fdf8e2e (diff) | |
| download | linux-stable-f377775dc083506e2fd7739d8615971c46b5246e.tar.gz linux-stable-f377775dc083506e2fd7739d8615971c46b5246e.tar.bz2 linux-stable-f377775dc083506e2fd7739d8615971c46b5246e.zip | |
TTY: hvc_dcc: probe for a JTAG connection before registering
Enabling the ARM DCC console and using without a JTAG connection will
simply hang the system. Since distros like to turn on all options, this
is a reoccurring problem to debug. We can do better by checking if
anything is attached and handling characters. There is no way to probe
this, so send a newline and check that it is handled.
Cc: Paolo Pisati <paolo.pisati@canonical.com>
Cc: Tim Gardner <tim.gardner@canonical.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Makefile')
0 files changed, 0 insertions, 0 deletions