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watchdog: hpwdt (12/12): Make NMI decoding a compile-time option
[firefly-linux-kernel-4.4.55.git]
/
drivers
/
mfd
/
ab8500-spi.c
diff --git
a/drivers/mfd/ab8500-spi.c
b/drivers/mfd/ab8500-spi.c
index b81d4f768ef6ce410a78694118111075c9af38cd..e1c8b62b086d506ef46d8a52ccb6d5c4d73e0a18 100644
(file)
--- a/
drivers/mfd/ab8500-spi.c
+++ b/
drivers/mfd/ab8500-spi.c
@@
-68,7
+68,12
@@
static int ab8500_spi_read(struct ab8500 *ab8500, u16 addr)
ret = spi_sync(spi, &msg);
if (!ret)
- ret = ab8500->rx_buf[0];
+ /*
+ * Only the 8 lowermost bytes are
+ * defined with value, the rest may
+ * vary depending on chip/board noise.
+ */
+ ret = ab8500->rx_buf[0] & 0xFFU;
return ret;
}