diff options
| author | Eric Blake <eblake@redhat.com> | 2017-12-01 17:24:29 -0600 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-01-16 14:54:51 +0100 |
| commit | 19a4d43ef05e323f811cf944980639449dbb39ac (patch) | |
| tree | 9219d62bda5843d105034e8b3b15878ddcc43cf5 /chardev/char-serial.c | |
| parent | 94f5c480e9b5ce95394026b3f025816470e23eaf (diff) | |
chardev: Use goto/label instead of do/break/while(0)
Use of a do/while(0) control flow in order to permit an early break
is an unusual paradigm, and triggers a false positive with a planned
future syntax check against 'while (0);'. Rewrite the code to use a
goto instead. This patch temporarily keeps an extra level of
indentation to highlight the change; the next patch cleans it up.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20171201232433.25193-4-eblake@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'chardev/char-serial.c')
| -rw-r--r-- | chardev/char-serial.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/chardev/char-serial.c b/chardev/char-serial.c index 2f8f83821d..10162f9fa3 100644 --- a/chardev/char-serial.c +++ b/chardev/char-serial.c @@ -64,9 +64,14 @@ static void tty_serial_init(int fd, int speed, #endif tcgetattr(fd, &tty); -#define check_speed(val) if (speed <= val) { spd = B##val; break; } +#define check_speed(val) \ + if (speed <= val) { \ + spd = B##val; \ + goto done; \ + } + speed = speed * 10 / 11; - do { + { check_speed(50); check_speed(75); check_speed(110); @@ -125,8 +130,10 @@ static void tty_serial_init(int fd, int speed, check_speed(4000000); #endif spd = B115200; - } while (0); + } +#undef check_speed + done: cfsetispeed(&tty, spd); cfsetospeed(&tty, spd); |