The todr_handle struct contains two unused function pointers, which are
either not implemented or with clones of eopnotsupp(). The following
diff removes this waste of kernel text.

Index: arch/sparc64/dev/rtc.c
===================================================================
RCS file: /OpenBSD/src/sys/arch/sparc64/dev/rtc.c,v
retrieving revision 1.10
diff -u -p -r1.10 rtc.c
--- arch/sparc64/dev/rtc.c      11 Jul 2014 08:18:31 -0000      1.10
+++ arch/sparc64/dev/rtc.c      21 Apr 2021 19:24:32 -0000
@@ -119,8 +119,6 @@ int rtc_gettime(todr_chip_handle_t, stru
 int rtc_settime(todr_chip_handle_t, struct timeval *);
 int rtc_bq4802_gettime(todr_chip_handle_t, struct timeval *);
 int rtc_bq4802_settime(todr_chip_handle_t, struct timeval *);
-int rtc_getcal(todr_chip_handle_t, int *);
-int rtc_setcal(todr_chip_handle_t, int);
 
 int
 rtc_match(struct device *parent, void *cf, void *aux)
@@ -166,8 +164,6 @@ rtc_attach(struct device *parent, struct
        handle->cookie = sc;
        handle->todr_gettime = rtc_gettime;
        handle->todr_settime = rtc_settime;
-       handle->todr_getcal = rtc_getcal;
-       handle->todr_setcal = rtc_setcal;
 
        handle->bus_cookie = NULL;
        handle->todr_setwen = NULL;
@@ -403,16 +399,4 @@ rtc_bq4802_settime(todr_chip_handle_t ha
        csr &= ~BQ4802_UTI;
        bus_space_write_1(iot, ioh, BQ4802_CTRL, csr);
        return (0);
-}
-
-int
-rtc_getcal(todr_chip_handle_t handle, int *vp)
-{
-       return (EOPNOTSUPP);
-}
-
-int
-rtc_setcal(todr_chip_handle_t handle, int v)
-{
-       return (EOPNOTSUPP);
 }
Index: dev/clock_subr.h
===================================================================
RCS file: /OpenBSD/src/sys/dev/clock_subr.h,v
retrieving revision 1.6
diff -u -p -r1.6 clock_subr.h
--- dev/clock_subr.h    17 May 2020 13:21:20 -0000      1.6
+++ dev/clock_subr.h    21 Apr 2021 19:24:32 -0000
@@ -35,8 +35,6 @@
  *
  * todr_gettime: convert time-of-day clock into a `struct timeval'
  * todr_settime: set time-of-day clock from a `struct timeval'
- * todr_getcal: get current TOD clock calibration value in ppm
- * todr_setcal: set calibration value in ppm in TOD clock
  *
  * (this is probably not so useful:)
  * todr_setwen: provide a machine-dependent TOD clock write-enable callback
@@ -49,16 +47,12 @@ struct todr_chip_handle {
 
        int     (*todr_gettime)(struct todr_chip_handle *, struct timeval *);
        int     (*todr_settime)(struct todr_chip_handle *, struct timeval *);
-       int     (*todr_getcal)(struct todr_chip_handle *, int *);
-       int     (*todr_setcal)(struct todr_chip_handle *, int);
        int     (*todr_setwen)(struct todr_chip_handle *, int);
 };
 typedef struct todr_chip_handle *todr_chip_handle_t;
 
 #define todr_gettime(ct, t)    ((*(ct)->todr_gettime)(ct, t))
 #define todr_settime(ct, t)    ((*(ct)->todr_settime)(ct, t))
-#define todr_getcal(ct, vp)    ((*(ct)->todr_gettime)(ct, vp))
-#define todr_setcal(ct, v)     ((*(ct)->todr_settime)(ct, v))
 #define todr_wenable(ct, v)    if ((ct)->todr_setwen) \
                                        ((*(ct)->todr_setwen)(ct, v))
 
Index: dev/fdt/sxirtc.c
===================================================================
RCS file: /OpenBSD/src/sys/dev/fdt/sxirtc.c,v
retrieving revision 1.4
diff -u -p -r1.4 sxirtc.c
--- dev/fdt/sxirtc.c    11 Aug 2019 14:46:18 -0000      1.4
+++ dev/fdt/sxirtc.c    21 Apr 2021 19:24:32 -0000
@@ -146,8 +146,6 @@ sxirtc_attach(struct device *parent, str
        handle->cookie = self;
        handle->todr_gettime = sxirtc_gettime;
        handle->todr_settime = sxirtc_settime;
-       handle->todr_getcal = NULL;
-       handle->todr_setcal = NULL;
        handle->bus_cookie = NULL;
        handle->todr_setwen = NULL;
        todr_handle = handle;
Index: dev/i2c/ds1307.c
===================================================================
RCS file: /OpenBSD/src/sys/dev/i2c/ds1307.c,v
retrieving revision 1.2
diff -u -p -r1.2 ds1307.c
--- dev/i2c/ds1307.c    27 Apr 2020 12:41:44 -0000      1.2
+++ dev/i2c/ds1307.c    21 Apr 2021 19:24:32 -0000
@@ -72,8 +72,6 @@ int   maxrtc_enable_osc(struct maxrtc_soft
 int    maxrtc_set_24h_mode(struct maxrtc_softc *);
 int    maxrtc_gettime(struct todr_chip_handle *, struct timeval *);
 int    maxrtc_settime(struct todr_chip_handle *, struct timeval *);
-int    maxrtc_getcal(struct todr_chip_handle *, int *);
-int    maxrtc_setcal(struct todr_chip_handle *, int);
 
 /*
  * Driver glue structures.
@@ -114,8 +112,6 @@ maxrtc_attach(struct device *parent, str
        sc->sc_todr.cookie = sc;
        sc->sc_todr.todr_gettime = maxrtc_gettime;
        sc->sc_todr.todr_settime = maxrtc_settime;
-       sc->sc_todr.todr_getcal = maxrtc_getcal;
-       sc->sc_todr.todr_setcal = maxrtc_setcal;
        sc->sc_todr.todr_setwen = NULL;
 
        if (maxrtc_enable_osc(sc) == -1)
@@ -275,16 +271,4 @@ maxrtc_settime(struct todr_chip_handle *
        }
 
        return (0);
-}
-
-int
-maxrtc_getcal(struct todr_chip_handle *ch, int *cal)
-{
-       return (EOPNOTSUPP);
-}
-
-int
-maxrtc_setcal(struct todr_chip_handle *ch, int cal)
-{
-       return (EOPNOTSUPP);
 }
Index: dev/i2c/pcf8523.c
===================================================================
RCS file: /OpenBSD/src/sys/dev/i2c/pcf8523.c,v
retrieving revision 1.4
diff -u -p -r1.4 pcf8523.c
--- dev/i2c/pcf8523.c   27 Apr 2020 12:36:03 -0000      1.4
+++ dev/i2c/pcf8523.c   21 Apr 2021 19:24:32 -0000
@@ -109,8 +109,6 @@ int pcfrtc_clock_read(struct pcfrtc_soft
 int pcfrtc_clock_write(struct pcfrtc_softc *, struct clock_ymdhms *);
 int pcfrtc_gettime(struct todr_chip_handle *, struct timeval *);
 int pcfrtc_settime(struct todr_chip_handle *, struct timeval *);
-int pcfrtc_getcal(struct todr_chip_handle *, int *);
-int pcfrtc_setcal(struct todr_chip_handle *, int);
 
 int
 pcfrtc_match(struct device *parent, void *v, void *arg)
@@ -136,8 +134,6 @@ pcfrtc_attach(struct device *parent, str
        sc->sc_todr.cookie = sc;
        sc->sc_todr.todr_gettime = pcfrtc_gettime;
        sc->sc_todr.todr_settime = pcfrtc_settime;
-       sc->sc_todr.todr_getcal = pcfrtc_getcal;
-       sc->sc_todr.todr_setcal = pcfrtc_setcal;
        sc->sc_todr.todr_setwen = NULL;
 
 #if 0
@@ -201,18 +197,6 @@ pcfrtc_settime(struct todr_chip_handle *
        }
 
        return (0);
-}
-
-int
-pcfrtc_setcal(struct todr_chip_handle *ch, int cal)
-{
-       return (EOPNOTSUPP);
-}
-
-int
-pcfrtc_getcal(struct todr_chip_handle *ch, int *cal)
-{
-       return (EOPNOTSUPP);
 }
 
 uint8_t
Index: dev/i2c/pcf8563.c
===================================================================
RCS file: /OpenBSD/src/sys/dev/i2c/pcf8563.c,v
retrieving revision 1.3
diff -u -p -r1.3 pcf8563.c
--- dev/i2c/pcf8563.c   13 Jan 2021 11:01:19 -0000      1.3
+++ dev/i2c/pcf8563.c   21 Apr 2021 19:24:32 -0000
@@ -96,8 +96,6 @@ int pcxrtc_clock_read(struct pcxrtc_soft
 int pcxrtc_clock_write(struct pcxrtc_softc *, struct clock_ymdhms *);
 int pcxrtc_gettime(struct todr_chip_handle *, struct timeval *);
 int pcxrtc_settime(struct todr_chip_handle *, struct timeval *);
-int pcxrtc_getcal(struct todr_chip_handle *, int *);
-int pcxrtc_setcal(struct todr_chip_handle *, int);
 
 int
 pcxrtc_match(struct device *parent, void *v, void *arg)
@@ -123,8 +121,6 @@ pcxrtc_attach(struct device *parent, str
        sc->sc_todr.cookie = sc;
        sc->sc_todr.todr_gettime = pcxrtc_gettime;
        sc->sc_todr.todr_settime = pcxrtc_settime;
-       sc->sc_todr.todr_getcal = pcxrtc_getcal;
-       sc->sc_todr.todr_setcal = pcxrtc_setcal;
        sc->sc_todr.todr_setwen = NULL;
 
 #if 0
@@ -173,18 +169,6 @@ pcxrtc_settime(struct todr_chip_handle *
        if (pcxrtc_clock_write(sc, &dt) == 0)
                return (-1);
        return (0);
-}
-
-int
-pcxrtc_setcal(struct todr_chip_handle *ch, int cal)
-{
-       return (EOPNOTSUPP);
-}
-
-int
-pcxrtc_getcal(struct todr_chip_handle *ch, int *cal)
-{
-       return (EOPNOTSUPP);
 }
 
 uint8_t
Index: dev/i2c/rs5c372.c
===================================================================
RCS file: /OpenBSD/src/sys/dev/i2c/rs5c372.c,v
retrieving revision 1.5
diff -u -p -r1.5 rs5c372.c
--- dev/i2c/rs5c372.c   5 Oct 2009 18:59:36 -0000       1.5
+++ dev/i2c/rs5c372.c   21 Apr 2021 19:24:32 -0000
@@ -107,8 +107,6 @@ int ricohrtc_clock_read(struct ricohrtc_
 int ricohrtc_clock_write(struct ricohrtc_softc *, struct clock_ymdhms *);
 int ricohrtc_gettime(struct todr_chip_handle *, struct timeval *);
 int ricohrtc_settime(struct todr_chip_handle *, struct timeval *);
-int ricohrtc_getcal(struct todr_chip_handle *, int *);
-int ricohrtc_setcal(struct todr_chip_handle *, int);
 
 int
 ricohrtc_match(struct device *parent, void *v, void *arg)
@@ -186,8 +184,6 @@ ricohrtc_attach(struct device *parent, s
        sc->sc_todr.cookie = sc;
        sc->sc_todr.todr_gettime = ricohrtc_gettime;
        sc->sc_todr.todr_settime = ricohrtc_settime;
-       sc->sc_todr.todr_getcal = ricohrtc_getcal;
-       sc->sc_todr.todr_setcal = ricohrtc_setcal;
        sc->sc_todr.todr_setwen = NULL;
 
 #if 0
@@ -231,20 +227,6 @@ ricohrtc_settime(struct todr_chip_handle
        if (ricohrtc_clock_write(sc, &dt) == 0)
                return (-1);
        return (0);
-}
-
-int
-ricohrtc_setcal(struct todr_chip_handle *ch, int cal)
-{
-
-       return (EOPNOTSUPP);
-}
-
-int
-ricohrtc_getcal(struct todr_chip_handle *ch, int *cal)
-{
-
-       return (EOPNOTSUPP);
 }
 
 void
Index: dev/ic/mk48txx.c
===================================================================
RCS file: /OpenBSD/src/sys/dev/ic/mk48txx.c,v
retrieving revision 1.7
diff -u -p -r1.7 mk48txx.c
--- dev/ic/mk48txx.c    5 Apr 2011 19:54:35 -0000       1.7
+++ dev/ic/mk48txx.c    21 Apr 2021 19:24:32 -0000
@@ -54,8 +54,6 @@ struct mk48txx {
 
 int mk48txx_gettime(todr_chip_handle_t, struct timeval *);
 int mk48txx_settime(todr_chip_handle_t, struct timeval *);
-int mk48txx_getcal(todr_chip_handle_t, int *);
-int mk48txx_setcal(todr_chip_handle_t, int);
 
 int mk48txx_auto_century_adjust = 1;
 
@@ -111,8 +109,6 @@ mk48txx_attach(bt, bh, model, year0)
        handle->cookie = mk;
        handle->todr_gettime = mk48txx_gettime;
        handle->todr_settime = mk48txx_settime;
-       handle->todr_getcal = mk48txx_getcal;
-       handle->todr_setcal = mk48txx_setcal;
        handle->todr_setwen = NULL;
        mk->mk_bt = bt;
        mk->mk_bh = bh;
@@ -222,22 +218,6 @@ mk48txx_settime(handle, tv)
        bus_space_write_1(bt, bh, clkoff + MK48TXX_ICSR, csr);
        todr_wenable(handle, 0);
        return (0);
-}
-
-int
-mk48txx_getcal(handle, vp)
-       todr_chip_handle_t handle;
-       int *vp;
-{
-       return (EOPNOTSUPP);
-}
-
-int
-mk48txx_setcal(handle, v)
-       todr_chip_handle_t handle;
-       int v;
-{
-       return (EOPNOTSUPP);
 }
 
 int

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