hwmon: (sfctemp) Assert reset between conversions

Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>

drivers/hwmon/sfctemp.c

@@ -76,36 +76,34 @@ static irqreturn_t sfctemp_isr(int irq, void *data)
 	struct sfctemp *sfctemp = data;
 
 	sfctemp->dout = readl(sfctemp->regs);
-	writel(SFCTEMP_RSTN, sfctemp->regs);
+	writel(0, sfctemp->regs);
 	complete(&sfctemp->conversion_done);
 	return IRQ_HANDLED;
 }
 
 static void sfctemp_power_up(struct sfctemp *sfctemp)
 {
+	/* make sure we're powered down first */
 	writel(SFCTEMP_PD, sfctemp->regs);
 	udelay(1);
 
 	writel(0, sfctemp->regs);
 	/* wait t_pu(50us) + t_rst(100ns) */
 	usleep_range(60, 200);
-
-	writel(SFCTEMP_RSTN, sfctemp->regs);
-	/* wait t_su(500ps) */
-	udelay(1);
 }
 
 static void sfctemp_power_down(struct sfctemp *sfctemp)
 {
-	writel(SFCTEMP_RSTN, sfctemp->regs);
-	udelay(1);
-
 	writel(SFCTEMP_PD, sfctemp->regs);
-	udelay(1);
 }
 
 static void sfctemp_run(struct sfctemp *sfctemp)
 {
+	/* de-assert reset */
+	writel(SFCTEMP_RSTN, sfctemp->regs);
+	udelay(1); /* wait t_su(500ps) */
+
+	/* start conversion */
 	writel(SFCTEMP_RSTN | SFCTEMP_RUN, sfctemp->regs);
 }