diff options
Diffstat (limited to 'extras/scsi_id/scsi_serial.c')
| -rw-r--r-- | extras/scsi_id/scsi_serial.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/extras/scsi_id/scsi_serial.c b/extras/scsi_id/scsi_serial.c index 0f883dc02f..2e9168f941 100644 --- a/extras/scsi_id/scsi_serial.c +++ b/extras/scsi_id/scsi_serial.c @@ -23,6 +23,7 @@ #include <stdlib.h> #include <unistd.h> #include <syslog.h> +#include <time.h> #include <inttypes.h> #include <scsi/scsi.h> #include <scsi/sg.h> @@ -846,13 +847,15 @@ int scsi_get_serial(struct udev *udev, memset(dev_scsi->serial, 0, len); dbg(udev, "opening %s\n", devname); while (--cnt) { + const struct timespec duration = { 0, 500 * 1000 * 1000 }; + fd = open(devname, O_RDONLY | O_NONBLOCK); if (fd >= 0) break; info(udev, "%s: cannot open %s: %s\n", dev_scsi->kernel, devname, strerror(errno)); if (errno != EBUSY) break; - usleep(500000 + (rand() % 100000) ); + nanosleep(&duration, NULL); } if (fd < 0) return 1; |