[3/8] soc: bcm: bcm2835-pm: Stop using _relaxed mmio accessors.

Commit Message

Eric Anholt Nov. 20, 2018, 5:19 p.m. UTC

We definitely don't want I/O to be reordered here (like the setting of
the WDT timeout before enabling the WDT).  None of this is performance
critical, anyway.

Signed-off-by: Eric Anholt <[e-mail]>
---
 drivers/soc/bcm/bcm2835-pm.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

Patch

diff --git a/drivers/soc/bcm/bcm2835-pm.c b/drivers/soc/bcm/bcm2835-pm.c
index ca37145e4e40..decc316fbe40 100644
--- a/drivers/soc/bcm/bcm2835-pm.c
+++ b/drivers/soc/bcm/bcm2835-pm.c
@@ -67,11 +67,11 @@  static int bcm2835_wdt_start(struct watchdog_device *wdog)
 
 	spin_lock_irqsave(&pm->lock, flags);
 
-	writel_relaxed(PM_PASSWORD | (SECS_TO_WDOG_TICKS(wdog->timeout) &
-				PM_WDOG_TIME_SET), pm->base + PM_WDOG);
-	cur = readl_relaxed(pm->base + PM_RSTC);
-	writel_relaxed(PM_PASSWORD | (cur & PM_RSTC_WRCFG_CLR) |
-		  PM_RSTC_WRCFG_FULL_RESET, pm->base + PM_RSTC);
+	writel(PM_PASSWORD | (SECS_TO_WDOG_TICKS(wdog->timeout) &
+			      PM_WDOG_TIME_SET), pm->base + PM_WDOG);
+	cur = readl(pm->base + PM_RSTC);
+	writel(PM_PASSWORD | (cur & PM_RSTC_WRCFG_CLR) |
+	       PM_RSTC_WRCFG_FULL_RESET, pm->base + PM_RSTC);
 
 	spin_unlock_irqrestore(&pm->lock, flags);
 
@@ -82,7 +82,7 @@  static int bcm2835_wdt_stop(struct watchdog_device *wdog)
 {
 	struct bcm2835_pm *pm = watchdog_get_drvdata(wdog);
 
-	writel_relaxed(PM_PASSWORD | PM_RSTC_RESET, pm->base + PM_RSTC);
+	writel(PM_PASSWORD | PM_RSTC_RESET, pm->base + PM_RSTC);
 	return 0;
 }
 
@@ -90,7 +90,7 @@  static unsigned int bcm2835_wdt_get_timeleft(struct watchdog_device *wdog)
 {
 	struct bcm2835_pm *pm = watchdog_get_drvdata(wdog);
 
-	uint32_t ret = readl_relaxed(pm->base + PM_WDOG);
+	uint32_t ret = readl(pm->base + PM_WDOG);
 	return WDOG_TICKS_TO_SECS(ret & PM_WDOG_TIME_SET);
 }
 
@@ -99,11 +99,11 @@  static void __bcm2835_restart(struct bcm2835_pm *pm)
 	u32 val;
 
 	/* use a timeout of 10 ticks (~150us) */
-	writel_relaxed(10 | PM_PASSWORD, pm->base + PM_WDOG);
-	val = readl_relaxed(pm->base + PM_RSTC);
+	writel(10 | PM_PASSWORD, pm->base + PM_WDOG);
+	val = readl(pm->base + PM_RSTC);
 	val &= PM_RSTC_WRCFG_CLR;
 	val |= PM_PASSWORD | PM_RSTC_WRCFG_FULL_RESET;
-	writel_relaxed(val, pm->base + PM_RSTC);
+	writel(val, pm->base + PM_RSTC);
 
 	/* No sleeping, possibly atomic. */
 	mdelay(1);
@@ -159,9 +159,9 @@  static void bcm2835_power_off(void)
 	 * from the normal (full) reset. bootcode.bin will not reboot after a
 	 * hard reset.
 	 */
-	val = readl_relaxed(pm->base + PM_RSTS);
+	val = readl(pm->base + PM_RSTS);
 	val |= PM_PASSWORD | PM_RSTS_RASPBERRYPI_HALT;
-	writel_relaxed(val, pm->base + PM_RSTS);
+	writel(val, pm->base + PM_RSTS);
 
 	/* Continue with normal reset mechanism */
 	__bcm2835_restart(pm);