Commit b35692eb authored by Ralf Baechle's avatar Ralf Baechle
Browse files

[CHAR] ds1286: Fix handling of seconds in RTC_ALM_SET ioctl. 



 o Fix use of uninitialized variable sec.
 o Make the RTC_ALM_SET ioctl return -EINVAL for non-zero seconds - the
   DS1286 has no second field for the alarm time.
 o Replace the obscure BIN_TO_BCD macro with BIN2BCD.

Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 45592145

drivers/char/ds1286.c

+6 −3
Original line number Diff line number Diff line
@@ -197,6 +197,7 @@ static int ds1286_ioctl(struct inode *inode, struct file *file, 


		hrs = alm_tm.tm_hour;

		min = alm_tm.tm_min;

		sec = alm_tm.tm_sec;



		if (hrs >= 24)

			hrs = 0xff;
@@ -204,9 +205,11 @@ static int ds1286_ioctl(struct inode *inode, struct file *file, 
		if (min >= 60)

			min = 0xff;



		BIN_TO_BCD(sec);

		BIN_TO_BCD(min);

		BIN_TO_BCD(hrs);

		if (sec != 0)

			return -EINVAL;



		min = BIN2BCD(min);

		min = BIN2BCD(hrs);



		spin_lock(&ds1286_lock);

		rtc_write(hrs, RTC_HOURS_ALARM);

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