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 | |
| parent | 978e595f88a1fba5869aa42a4af4fba36f33ecac (diff) | |
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>
| -rw-r--r-- | drivers/s390/char/con3215.c | 5 | ||||
| -rw-r--r-- | drivers/s390/char/sclp_tty.c | 4 | ||||
| -rw-r--r-- | drivers/s390/char/sclp_vt220.c | 6 | ||||
| -rw-r--r-- | drivers/s390/char/tty3270.c | 3 |
4 files changed, 12 insertions, 6 deletions
diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c index 0e1f35c9ed9..3e5653c92f4 100644 --- a/drivers/s390/char/con3215.c +++ b/drivers/s390/char/con3215.c @@ -982,15 +982,16 @@ tty3215_write(struct tty_struct * tty, /* * Put character routine for 3215 ttys */ -static void +static int tty3215_put_char(struct tty_struct *tty, unsigned char ch) { struct raw3215_info *raw; if (!tty) - return; + return 0; raw = (struct raw3215_info *) tty->driver_data; raw3215_putchar(raw, ch); + return 1; } static void diff --git a/drivers/s390/char/sclp_tty.c b/drivers/s390/char/sclp_tty.c index e3b3d390b4a..40b11521cd2 100644 --- a/drivers/s390/char/sclp_tty.c +++ b/drivers/s390/char/sclp_tty.c @@ -412,14 +412,14 @@ sclp_tty_write(struct tty_struct *tty, const unsigned char *buf, int count) * - including previous characters from sclp_tty_put_char() and strings from * sclp_write() without final '\n' - will be written. */ -static void +static int sclp_tty_put_char(struct tty_struct *tty, unsigned char ch) { sclp_tty_chars[sclp_tty_chars_count++] = ch; if (ch == '\n' || sclp_tty_chars_count >= SCLP_TTY_BUF_SIZE) { sclp_tty_write_string(sclp_tty_chars, sclp_tty_chars_count); sclp_tty_chars_count = 0; - } + } return 1; } /* diff --git a/drivers/s390/char/sclp_vt220.c b/drivers/s390/char/sclp_vt220.c index ed507594e62..35707c04e61 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; } /* diff --git a/drivers/s390/char/tty3270.c b/drivers/s390/char/tty3270.c index 70b1980a08b..c1f2adefad4 100644 --- a/drivers/s390/char/tty3270.c +++ b/drivers/s390/char/tty3270.c @@ -965,7 +965,7 @@ tty3270_write_room(struct tty_struct *tty) * Insert character into the screen at the current position with the * current color and highlight. This function does NOT do cursor movement. */ -static void +static int tty3270_put_character(struct tty3270 *tp, char ch) { struct tty3270_line *line; @@ -986,6 +986,7 @@ tty3270_put_character(struct tty3270 *tp, char ch) cell->character = tp->view.ascebc[(unsigned int) ch]; cell->highlight = tp->highlight; cell->f_color = tp->f_color; + return 1; } /* |