rtc: stop validating rtc_time after rtc_time_to_tm

rtc_time_to_tm never generates an invalid tm. It is not necessary to
validate it.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

drivers/rtc/rtc-ab8500.c

@@ -131,7 +131,7 @@ static int ab8500_rtc_read_time(struct device *dev, struct rtc_time *tm)
 	secs += get_elapsed_seconds(AB8500_RTC_EPOCH);
 
 	rtc_time_to_tm(secs, tm);
-	return rtc_valid_tm(tm);
+	return 0;
 }
 
 static int ab8500_rtc_set_time(struct device *dev, struct rtc_time *tm)

drivers/rtc/rtc-coh901331.c

@@ -82,7 +82,7 @@ static int coh901331_read_time(struct device *dev, struct rtc_time *tm)
 	if (readl(rtap->virtbase + COH901331_VALID)) {
 		rtc_time_to_tm(readl(rtap->virtbase + COH901331_CUR_TIME), tm);
 		clk_disable(rtap->clk);
-		return rtc_valid_tm(tm);
+		return 0;
 	}
 	clk_disable(rtap->clk);
 	return -EINVAL;

drivers/rtc/rtc-jz4740.c

@@ -173,7 +173,7 @@ static int jz4740_rtc_read_time(struct device *dev, struct rtc_time *time)
 
 	rtc_time_to_tm(secs, time);
 
-	return rtc_valid_tm(time);
+	return 0;
 }
 
 static int jz4740_rtc_set_mmss(struct device *dev, unsigned long secs)

drivers/rtc/rtc-lpc32xx.c

@@ -70,7 +70,7 @@ static int lpc32xx_rtc_read_time(struct device *dev, struct rtc_time *time)
 	elapsed_sec = rtc_readl(rtc, LPC32XX_RTC_UCOUNT);
 	rtc_time_to_tm(elapsed_sec, time);
 
-	return rtc_valid_tm(time);
+	return 0;
 }
 
 static int lpc32xx_rtc_set_mmss(struct device *dev, unsigned long secs)

drivers/rtc/rtc-ls1x.c

@@ -98,7 +98,7 @@ static int ls1x_rtc_read_time(struct device *dev, struct rtc_time *rtm)
 			ls1x_get_min(v), ls1x_get_sec(v));
 	rtc_time_to_tm(t, rtm);
 
-	return rtc_valid_tm(rtm);
+	return 0;
 }
 
 static int ls1x_rtc_set_time(struct device *dev, struct  rtc_time *rtm)

drivers/rtc/rtc-mpc5121.c

@@ -122,7 +122,7 @@ static int mpc5121_rtc_read_time(struct device *dev, struct rtc_time *tm)
 	 */
 	mpc5121_rtc_update_smh(regs, tm);
 
-	return rtc_valid_tm(tm);
+	return 0;
 }
 
 static int mpc5121_rtc_set_time(struct device *dev, struct rtc_time *tm)

drivers/rtc/rtc-pcap.c

@@ -95,7 +95,7 @@ static int pcap_rtc_read_time(struct device *dev, struct rtc_time *tm)
 
 	rtc_time_to_tm(secs, tm);
 
-	return rtc_valid_tm(tm);
+	return 0;
 }
 
 static int pcap_rtc_set_mmss(struct device *dev, unsigned long secs)

drivers/rtc/rtc-ps3.c

@@ -41,7 +41,7 @@ static u64 read_rtc(void)
 static int ps3_get_time(struct device *dev, struct rtc_time *tm)
 {
 	rtc_time_to_tm(read_rtc() + ps3_os_area_get_rtc_diff(), tm);
-	return rtc_valid_tm(tm);
+	return 0;
 }
 
 static int ps3_set_time(struct device *dev, struct rtc_time *tm)

drivers/rtc/rtc-starfire.c

@@ -28,7 +28,7 @@ static u32 starfire_get_time(void)
 static int starfire_read_time(struct device *dev, struct rtc_time *tm)
 {
 	rtc_time_to_tm(starfire_get_time(), tm);
-	return rtc_valid_tm(tm);
+	return 0;
 }
 
 static const struct rtc_class_ops starfire_rtc_ops = {

drivers/rtc/rtc-tps6586x.c

@@ -90,7 +90,7 @@ static int tps6586x_rtc_read_time(struct device *dev, struct rtc_time *tm)
 	seconds = ticks >> 10;
 	seconds += rtc->epoch_start;
 	rtc_time_to_tm(seconds, tm);
-	return rtc_valid_tm(tm);
+	return 0;
 }
 
 static int tps6586x_rtc_set_time(struct device *dev, struct rtc_time *tm)

drivers/rtc/rtc-tx4939.c

@@ -112,7 +112,7 @@ static int tx4939_rtc_read_time(struct device *dev, struct rtc_time *tm)
 	sec = ((unsigned long)buf[5] << 24) | (buf[4] << 16) |
 		(buf[3] << 8) | buf[2];
 	rtc_time_to_tm(sec, tm);
-	return rtc_valid_tm(tm);
+	return 0;
 }
 
 static int tx4939_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)

drivers/rtc/rtc-wm831x.c

@@ -156,7 +156,7 @@ static int wm831x_rtc_readtime(struct device *dev, struct rtc_time *tm)
 			u32 time = (time1[0] << 16) | time1[1];
 
 			rtc_time_to_tm(time, tm);
-			return rtc_valid_tm(tm);
+			return 0;
 		}
 
 	} while (++count < WM831X_GET_TIME_RETRIES);

drivers/rtc/rtc-xgene.c

@@ -60,7 +60,7 @@ static int xgene_rtc_read_time(struct device *dev, struct rtc_time *tm)
 	struct xgene_rtc_dev *pdata = dev_get_drvdata(dev);
 
 	rtc_time_to_tm(readl(pdata->csr_base + RTC_CCVR), tm);
-	return rtc_valid_tm(tm);
+	return 0;
 }
 
 static int xgene_rtc_set_mmss(struct device *dev, unsigned long secs)