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| author | Jiri Slaby <jslaby@suse.cz> | 2021-05-05 11:18:54 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-13 16:57:15 +0200 |
| commit | ed5aecd3da2eabd8a6c9f5593df2c4f00985fca2 (patch) | |
| tree | e402dc88de61bbc0bd526700acb9799b28190604 /drivers/tty/vt/vt.c | |
| parent | d7e325aaa8c3593b5a572b583ecad79e95f32e7f (diff) | |
| download | lwn-ed5aecd3da2eabd8a6c9f5593df2c4f00985fca2.tar.gz lwn-ed5aecd3da2eabd8a6c9f5593df2c4f00985fca2.zip | |
tty: remove broken r3964 line discipline
Noone stepped up in the past two years since it was marked as BROKEN by
commit c7084edc3f6d (tty: mark Siemens R3964 line discipline as BROKEN).
Remove the line discipline for good.
Three remarks:
* we remove also the uapi header (as noone is able to use that interface
anyway)
* we do *not* remove the N_R3964 constant definition from tty.h, so it
remains reserved.
* in_interrupt() check is now removed from vt's con_put_char. Noone else
calls tty_operations::put_char from interrupt context.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20210505091928.22010-2-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/vt/vt.c')
| -rw-r--r-- | drivers/tty/vt/vt.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c index 01645e87b3d5..e5040bdadcd6 100644 --- a/drivers/tty/vt/vt.c +++ b/drivers/tty/vt/vt.c @@ -3260,8 +3260,6 @@ static int con_write(struct tty_struct *tty, const unsigned char *buf, int count static int con_put_char(struct tty_struct *tty, unsigned char ch) { - if (in_interrupt()) - return 0; /* n_r3964 calls put_char() from interrupt context */ return do_con_write(tty, &ch, 1); } |