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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2017-02-02 10:33:20 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2017-02-08 14:13:20 +0100 |
| commit | 02407baaebdef86571e4e939ddbd3b32d9b5d389 (patch) | |
| tree | 3389599af369faa22c2731947bde7714cad1ba66 /drivers/s390 | |
| parent | d5ab7a34f9bbad54f89b812e6b0d2d898f9433db (diff) | |
| download | linux-02407baaebdef86571e4e939ddbd3b32d9b5d389.tar.gz linux-02407baaebdef86571e4e939ddbd3b32d9b5d389.tar.xz | |
s390/sclp: don't add new lines to each printed string
The early vt220 sclp printk code added an extra new line to each
printed multi-line text. If used for the early sclp console this will
lead to numerous extra new lines. Therefore get rid of this semantic
and require that each to be printed string contains a line feed
character if a new line is wanted.
Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/char/sclp_early_core.c | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/drivers/s390/char/sclp_early_core.c b/drivers/s390/char/sclp_early_core.c index 97f4c84d6635..cc3ad8c69a7a 100644 --- a/drivers/s390/char/sclp_early_core.c +++ b/drivers/s390/char/sclp_early_core.c @@ -138,21 +138,18 @@ struct vt220_sccb { } msg; } __packed; -/* Output multi-line text (plus a newline) using SCLP VT220 - * interface. - */ +/* Output multi-line text using SCLP VT220 interface. */ static void sclp_early_print_vt220(const char *str, unsigned int len) { struct vt220_sccb *sccb; sccb = (struct vt220_sccb *) &sclp_early_sccb; if (sizeof(*sccb) + len >= sizeof(sclp_early_sccb)) - len = sizeof(sclp_early_sccb) - sizeof(*sccb) - 1; + len = sizeof(sclp_early_sccb) - sizeof(*sccb); memset(sccb, 0, sizeof(*sccb)); memcpy(&sccb->msg.data, str, len); - sccb->msg.data[len] = '\n'; - sccb->header.length = sizeof(*sccb) + len + 1; - sccb->msg.header.length = sizeof(sccb->msg) + len + 1; + sccb->header.length = sizeof(*sccb) + len; + sccb->msg.header.length = sizeof(sccb->msg) + len; sccb->msg.header.type = EVTYP_VT220MSG; sclp_early_cmd(SCLP_CMDW_WRITE_EVENT_DATA, sccb); } @@ -196,8 +193,9 @@ static int sclp_early_setup(int disable, int *have_linemode, int *have_vt220) return rc; } -/* Output one or more lines of text on the SCLP console (VT220 and / - * or line-mode). All lines get terminated; no need for a trailing LF. +/* + * Output one or more lines of text on the SCLP console (VT220 and / + * or line-mode). */ void __sclp_early_printk(const char *str, unsigned int len) { |