spin_unit 100 drivers/acpi/apei/erst.c static int erst_timedout(u64 *t, u64 spin_unit) spin_unit 102 drivers/acpi/apei/erst.c if ((s64)*t < spin_unit) { spin_unit 106 drivers/acpi/apei/erst.c *t -= spin_unit; spin_unit 107 drivers/acpi/apei/erst.c ndelay(spin_unit);