diff options
| author | Alan Cox <alan@lxorguk.ukuu.org.uk> | 2008-04-30 00:54:00 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-30 08:29:45 -0700 |
| commit | 9e7c9a19c1df8a7450c56c41b9c7405eca7eda07 (patch) | |
| tree | 8fd3e57dad8f05c7e43969d391bfd33a31738f27 /drivers/s390/char/sclp_vt220.c | |
| parent | 978e595f88a1fba5869aa42a4af4fba36f33ecac (diff) | |
| download | blackbird-op-linux-9e7c9a19c1df8a7450c56c41b9c7405eca7eda07.tar.gz blackbird-op-linux-9e7c9a19c1df8a7450c56c41b9c7405eca7eda07.zip | |
s390 tty: Prepare for put_char to return success/fail
Put the changes into the drivers first. This will still compile/work but
produce a warning if bisected so can still be debugged
Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/s390/char/sclp_vt220.c')
| -rw-r--r-- | drivers/s390/char/sclp_vt220.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/s390/char/sclp_vt220.c b/drivers/s390/char/sclp_vt220.c index ed507594e62b..35707c04e613 100644 --- a/drivers/s390/char/sclp_vt220.c +++ b/drivers/s390/char/sclp_vt220.c @@ -524,11 +524,15 @@ sclp_vt220_close(struct tty_struct *tty, struct file *filp) * NOTE: include/linux/tty_driver.h specifies that a character should be * ignored if there is no room in the queue. This driver implements a different * semantic in that it will block when there is no more room left. + * + * FIXME: putchar can currently be called from BH and other non blocking + * handlers so this semantic isn't a good idea. */ -static void +static int sclp_vt220_put_char(struct tty_struct *tty, unsigned char ch) { __sclp_vt220_write(&ch, 1, 0, 0, 1); + return 1; } /* |
