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Bug fix: check file descriptor after opening serial device.

This commit is contained in:
Daniel Beer 2010-08-13 19:08:27 +12:00
parent 9a4ef8a909
commit a59d1dc73b
1 changed files with 3 additions and 0 deletions
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3
util.c
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@ -113,6 +113,9 @@ int open_serial(const char *device, int rate)
int fd = open(device, O_RDWR | O_NOCTTY); int fd = open(device, O_RDWR | O_NOCTTY);
struct termios attr; struct termios attr;
if (fd < 0)
return -1;
tcgetattr(fd, &attr); tcgetattr(fd, &attr);
cfmakeraw(&attr); cfmakeraw(&attr);
cfsetispeed(&attr, rate); cfsetispeed(&attr, rate);