*/
static int wait_read(void)
{
+ unsigned long end = jiffies + (APPLESMC_MAX_WAIT * HZ) / USEC_PER_SEC;
u8 status;
int us;
+
for (us = APPLESMC_MIN_WAIT; us < APPLESMC_MAX_WAIT; us <<= 1) {
- udelay(us);
+ usleep_range(us, us * 16);
status = inb(APPLESMC_CMD_PORT);
/* read: wait for smc to settle */
if (status & 0x01)
return 0;
+ /* timeout: give up */
+ if (time_after(jiffies, end))
+ break;
}
pr_warn("wait_read() fail: 0x%02x\n", status);
{
u8 status;
int us;
+ unsigned long end = jiffies + (APPLESMC_MAX_WAIT * HZ) / USEC_PER_SEC;
outb(cmd, port);
for (us = APPLESMC_MIN_WAIT; us < APPLESMC_MAX_WAIT; us <<= 1) {
- udelay(us);
+ usleep_range(us, us * 16);
status = inb(APPLESMC_CMD_PORT);
/* write: wait for smc to settle */
if (status & 0x02)
if (status & 0x04)
return 0;
/* timeout: give up */
- if (us << 1 == APPLESMC_MAX_WAIT)
+ if (time_after(jiffies, end))
break;
/* busy: long wait and resend */
udelay(APPLESMC_RETRY_WAIT);