hwclock: remove dead cmos code

* hwclock-cmos.c: remove unused 'century' code.

Signed-off-by: J William Piggott <elseifthen@gmx.com>

diff --git a/sys-utils/hwclock-cmos.c b/sys-utils/hwclock-cmos.c
index 5158369ac7875ed135d8b123baa8a8c36f233fb8..6227b94c0f64da6d9499672b428211589d47cbb9 100644 (file)
--- a/sys-utils/hwclock-cmos.c
+++ b/sys-utils/hwclock-cmos.c
@@ -104,11 +104,6 @@ static int inb(int c __attribute__((__unused__)))
 static unsigned short clock_ctl_addr = 0x70;
 static unsigned short clock_data_addr = 0x71;
 
-static int century_byte = 0;           /* 0: don't access a century byte
-                                        * 50 (0x32): usual PC value
-                                        * 55 (0x37): PS/2
-                                        */
-
 /*
  * Hmmh, this isn't very atomic. Maybe we should force an error instead?
  *
@@ -156,7 +151,6 @@ static unsigned long cmos_set_time(unsigned long arg)
 {
        unsigned char save_control, save_freq_select, pmbit = 0;
        struct tm tm = *(struct tm *)arg;
-       unsigned int century;
 
 /*
  * CMOS byte 10 (clock status register A) has 3 bitfields:
@@ -180,7 +174,6 @@ static unsigned long cmos_set_time(unsigned long arg)
        save_freq_select = cmos_read(10);       /* stop and reset prescaler */
        cmos_write(10, (save_freq_select | 0x70));
 
-       century = (tm.tm_year + TM_EPOCH) / 100;
        tm.tm_year %= 100;
        tm.tm_mon += 1;
        tm.tm_wday += 1;
@@ -202,7 +195,6 @@ static unsigned long cmos_set_time(unsigned long arg)
                BIN_TO_BCD(tm.tm_mday);
                BIN_TO_BCD(tm.tm_mon);
                BIN_TO_BCD(tm.tm_year);
-               BIN_TO_BCD(century);
        }
 
        cmos_write(0, tm.tm_sec);
@@ -212,8 +204,6 @@ static unsigned long cmos_set_time(unsigned long arg)
        cmos_write(7, tm.tm_mday);
        cmos_write(8, tm.tm_mon);
        cmos_write(9, tm.tm_year);
-       if (century_byte)
-               cmos_write(century_byte, century);
 
        /*
         * The kernel sources, linux/arch/i386/kernel/time.c, have the
@@ -316,10 +306,6 @@ static int read_hardware_clock_cmos(const struct hwclock_control *ctl
                        tm->tm_mon = hclock_read(8);
                        tm->tm_year = hclock_read(9);
                        status = hclock_read(11);
-#if 0
-                       if (century_byte)
-                               century = hclock_read(century_byte);
-#endif
                        /*
                         * Unless the clock changed while we were reading,
                         * consider this a good clock read .
@@ -343,9 +329,6 @@ static int read_hardware_clock_cmos(const struct hwclock_control *ctl
                BCD_TO_BIN(tm->tm_mday);
                BCD_TO_BIN(tm->tm_mon);
                BCD_TO_BIN(tm->tm_year);
-#if 0
-               BCD_TO_BIN(century);
-#endif
        }
 
        /*