rtc: allow rtc_set to return an error and use it in cmd_date

[J-u-boot.git] / drivers / rtc / mc13783-rtc.c

diff --git a/drivers/rtc/mc13783-rtc.c b/drivers/rtc/mc13783-rtc.c
index b6e15014bb68e67f22c2e1b3340a7a23f5ed5ed6..6ea9137889709c0d2ddc931fa1072721babd32df 100644 (file)
--- a/drivers/rtc/mc13783-rtc.c
+++ b/drivers/rtc/mc13783-rtc.c
@@ -77,7 +77,7 @@ int rtc_get(struct rtc_time *rtc)
        return 0;
 }
 
-void rtc_set(struct rtc_time *rtc)
+int rtc_set(struct rtc_time *rtc)
 {
        u32 time, day, reg;
 
@@ -86,7 +86,7 @@ void rtc_set(struct rtc_time *rtc)
                slave = spi_setup_slave(1, 0, 1000000,
                                SPI_MODE_2 | SPI_CS_HIGH);
                if (!slave)
-                       return;
+                       return -1;
        }
 
        time = mktime(rtc->tm_year, rtc->tm_mon, rtc->tm_mday,
@@ -95,7 +95,7 @@ void rtc_set(struct rtc_time *rtc)
        time %= 86400;
 
        if (spi_claim_bus(slave))
-               return;
+               return -1;
 
        reg = 0x2c000000 | day | 0x80000000;
        spi_xfer(slave, 32, (uchar *)&reg, (uchar *)&day,
@@ -106,6 +106,8 @@ void rtc_set(struct rtc_time *rtc)
                        SPI_XFER_BEGIN | SPI_XFER_END);
 
        spi_release_bus(slave);
+
+       return -1;
 }
 
 void rtc_reset(void)