kernel: Fix several typos and minor errors

- duplicate words
- typos
- references to old versions of FreeBSD

Reviewed by:	imp, benno

sys/amd64/amd64/support.S

@@ -596,7 +596,7 @@ END(subyte)
  * copyinstr(from, to, maxlen, int *lencopied) - MP SAFE
  *           %rdi, %rsi, %rdx, %rcx
  *
- *	copy a string from from to to, stop when a 0 character is reached.
+ *	copy a string from 'from' to 'to', stop when a 0 character is reached.
  *	return ENAMETOOLONG if string is longer than maxlen, and
  *	EFAULT on protection violations. If lencopied is non-zero,
  *	return the actual length in *lencopied.

sys/dev/ath/if_ath.c

@@ -1081,7 +1081,7 @@ ath_attach(u_int16_t devid, struct ath_softc *sc)
 	sc->sc_txq_node_psq_maxdepth = 16;
 
 	/*
-	 * Default the maximum queue to to 1/4'th the TX buffers, or
+	 * Default the maximum queue to 1/4'th the TX buffers, or
 	 * 64, whichever is smaller.
 	 */
 	sc->sc_txq_node_maxdepth = MIN(64, ath_txbuf / 4);

sys/dev/bhnd/nvram/bhnd_nvram_store_subr.c

@@ -748,7 +748,7 @@ bhnd_nvstore_var_register_path(struct bhnd_nvram_store *sc,
 }
 
 /**
- * Resolve the device path entry referenced referenced by @p info.
+ * Resolve the device path entry referenced by @p info.
  *
  * @param	sc		The NVRAM store to be updated.
  * @param	info		Variable name information descriptor containing

sys/dev/cadence/if_cgem.c

@@ -811,7 +811,7 @@ cgem_start_locked(if_t ifp)
 		WR4(sc, CGEM_NET_CTRL, sc->net_ctl_shadow |
 		    CGEM_NET_CTRL_START_TX);
 
-		/* If there is a BPF listener, bounce a copy to to him. */
+		/* If there is a BPF listener, bounce a copy to him. */
 		ETHER_BPF_MTAP(ifp, m);
 	}
 }

sys/dev/de/if_de.c

@@ -3920,7 +3920,7 @@ tulip_txput(tulip_softc_t * const sc, struct mbuf *m)
      * a bit reminiscent of going on the Ark two by two
      * since each descriptor for the TULIP can describe
      * two buffers.  So we advance through packet filling
-     * each of the two entries at a time to to fill each
+     * each of the two entries at a time to fill each
      * descriptor.  Clear the first and last segment bits
      * in each descriptor (actually just clear everything
      * but the end-of-ring or chain bits) to make sure

sys/dev/drm/mga_state.c

@@ -258,7 +258,7 @@ static __inline__ void mga_g200_emit_pipe(drm_mga_private_t * dev_priv)
 		  MGA_WR42, 0x0000ffff,
 		  MGA_WR60, 0x0000ffff);
 
-	/* Padding required to to hardware bug.
+	/* Padding required due to hardware bug.
 	 */
 	DMA_BLOCK(MGA_DMAPAD, 0xffffffff,
 		  MGA_DMAPAD, 0xffffffff,
@@ -340,7 +340,7 @@ static __inline__ void mga_g400_emit_pipe(drm_mga_private_t * dev_priv)
 		  MGA_WR52, MGA_G400_WR_MAGIC,	/* tex1 width        */
 		  MGA_WR60, MGA_G400_WR_MAGIC);	/* tex1 height       */
 
-	/* Padding required to to hardware bug */
+	/* Padding required due to hardware bug */
 	DMA_BLOCK(MGA_DMAPAD, 0xffffffff,
 		  MGA_DMAPAD, 0xffffffff,
 		  MGA_DMAPAD, 0xffffffff,

sys/dev/e1000/e1000_82543.c

@@ -1310,7 +1310,7 @@ static s32 e1000_check_for_copper_link_82543(struct e1000_hw *hw)
 			 * turn it on. For compatibility with a TBI link
 			 * partner, we will store bad packets. Some
 			 * frames have an additional byte on the end and
-			 * will look like CRC errors to to the hardware.
+			 * will look like CRC errors to the hardware.
 			 */
 			if (!e1000_tbi_sbp_enabled_82543(hw)) {
 				e1000_set_tbi_sbp_82543(hw, TRUE);

sys/dev/isci/scil/scic_sds_remote_node_context.c

@@ -899,7 +899,7 @@ SCI_STATUS scic_sds_remote_node_context_tx_suspended_state_resume_handler(
 *
 * @param[in] this_rnc The remote node context which is to receive the task
 *       request.
-* @param[in] the_request The task request to be transmitted to to the remote
+* @param[in] the_request The task request to be transmitted to the remote
 *       target device.
 *
 * @return SCI_STATUS

sys/dev/isci/scil/scif_sas_controller.c

@@ -913,7 +913,7 @@ void scif_sas_controller_free_internal_request(
       fw_controller, fw_internal_request_buffer
    ));
 
-   //return the memory to to pool.
+   //return the memory to the pool.
    if( !sci_pool_full(fw_controller->internal_request_memory_pool) )
    {
       sci_pool_put(

sys/dev/iwm/if_iwmreg.h

@@ -3734,7 +3734,7 @@ struct iwm_uapsd_misbehaving_ap_notif {
  *      beacon filtering; beacons will not be forced to be sent to driver
  *      regardless of whether its temperature has been changed.
  * @bf_enable_beacon_filter: 1, beacon filtering is enabled; 0, disabled.
- * @bf_filter_escape_timer: Send beacons to to driver if no beacons were passed
+ * @bf_filter_escape_timer: Send beacons to the driver if no beacons were passed
  *      for a specific period of time. Units: Beacons.
  * @ba_escape_timer: Fully receive and parse beacon if no beacons were passed
  *      for a longer period of time then this escape-timeout. Units: Beacons.

sys/dev/mvs/mvs_pci.c

@@ -338,7 +338,7 @@ mvs_intr(void *data)
 
 	ic = ATA_INL(ctlr->r_mem, CHIP_MIC);
 	if (ctlr->msi) {
-		/* We have to to mask MSI during processing. */
+		/* We have to mask MSI during processing. */
 		mtx_lock(&ctlr->mtx);
 		ATA_OUTL(ctlr->r_mem, CHIP_MIM, 0);
 		ctlr->msia = 1; /* Deny MIM update during processing. */

sys/dev/mwl/if_mwl.c

@@ -1239,7 +1239,7 @@ mwl_reset_vap(struct ieee80211vap *vap, int state)
 
 /*
  * Reset the hardware w/o losing operational state.
- * Used to to reset or reload hardware state for a vap.
+ * Used to reset or reload hardware state for a vap.
  */
 static int
 mwl_reset(struct ieee80211vap *vap, u_long cmd)

sys/dev/sfxge/common/siena_nvram.c

@@ -527,7 +527,7 @@ siena_nvram_partn_get_version(
 			: MC_CMD_NVRAM_TYPE_DYNAMIC_CFG_PORT1;
 		/*
 		 * Ingore missing partitions on port 2, assuming they're due
-		 * to to running on a single port part.
+		 * to running on a single port part.
 		 */
 		if ((1 << dcfg_partn) &  ~enp->en_u.siena.enu_partn_mask) {
 			if (entry->port == 2)

sys/dev/sio/sio.c

@@ -592,7 +592,7 @@ sioprobe(dev, xrid, rclk, noprobe)
 	 * junk after a (very fast) soft reboot and (apparently) after
 	 * master reset.
 	 * XXX what about the UART bug avoided by waiting in comparam()?
-	 * We don't want to to wait long enough to drain at 2 bps.
+	 * We don't want to wait long enough to drain at 2 bps.
 	 */
 	if (iobase == siocniobase)
 		DELAY((16 + 1) * 1000000 / (comdefaultrate / 10));

sys/dev/sound/isa/mss.h

@@ -183,7 +183,7 @@ typedef struct mixer_def mixer_tab[32][2];
  * The AD1848 codec has generic input lines called Line, Aux1 and Aux2.
  * Soundcard manufacturers have connected actual inputs (CD, synth, line,
  * etc) to these inputs in different order. Therefore it's difficult
- * to assign mixer channels to to these inputs correctly. The following
+ * to assign mixer channels to these inputs correctly. The following
  * contains two alternative mappings. The first one is for GUS MAX and
  * the second is just a generic one (line1, line2 and line3).
  * (Actually this is not a mapping but rather some kind of interleaving

sys/dev/syscons/scvgarndr.c

@@ -682,7 +682,7 @@ draw_txtmouse(scr_stat *scp, int x, int y)
     } else
 #endif /* SC_ALT_MOUSE_IMAGE */
     {
-	/* Red, magenta and brown are mapped to green to to keep it readable */
+	/* Red, magenta and brown are mapped to green to keep it readable */
 	static const int col_conv[16] = {
 		6, 6, 6, 6, 2, 2, 2, 6, 14, 14, 14, 14, 10, 10, 10, 14
 	};

sys/fs/nfsclient/nfs_clrpcops.c

@@ -5815,7 +5815,7 @@ nfsm_copym(struct mbuf *m, int off, int xfer)
 
 /*
  * Find a file layout that will handle the first bytes of the requested
- * range and return the information from it needed to to the I/O operation.
+ * range and return the information from it needed to the I/O operation.
  */
 int
 nfscl_findlayoutforio(struct nfscllayout *lyp, uint64_t off, uint32_t rwaccess,

sys/i386/i386/support.s

@@ -556,7 +556,7 @@ END(subyte)
 /*
  * copyinstr(from, to, maxlen, int *lencopied) - MP SAFE
  *
- *	copy a string from from to to, stop when a 0 character is reached.
+ *	copy a string from 'from' to 'to', stop when a 0 character is reached.
  *	return ENAMETOOLONG if string is longer than maxlen, and
  *	EFAULT on protection violations. If lencopied is non-zero,
  *	return the actual length in *lencopied.

sys/kern/vfs_subr.c

@@ -349,7 +349,7 @@ PCTRIE_DEFINE(BUF, buf, b_lblkno, buf_trie_alloc, buf_trie_free);
  *
  * Reevaluate the following cap on the number of vnodes after the physical
  * memory size exceeds 512GB.  In the limit, as the physical memory size
- * grows, the ratio of the memory size in KB to to vnodes approaches 64:1.
+ * grows, the ratio of the memory size in KB to vnodes approaches 64:1.
  */
 #ifndef	MAXVNODES_MAX
 #define	MAXVNODES_MAX	(512 * 1024 * 1024 / 64)	/* 8M */

sys/mips/conf/BERI_SOCKIT

@@ -2,7 +2,7 @@
 # BERI_SOCKIT -- Kernel for the SRI/Cambridge "BERI" (Bluespec Extensible
 # RISC Implementation) FPGA soft core, as configured in its Terasic SoCKit
 # reference configuration.  This kernel configration must be further
-# specialized to to include a root filesystem specification.
+# specialized to include a root filesystem specification.
 #
 # $FreeBSD$
 #

sys/net/altq/altq_hfsc.h

@@ -192,7 +192,7 @@ struct hfsc_class_stats {
  *	representation.
  *	the slope values are scaled to avoid overflow.
  *	the inverse slope values as well as the y-projection of the 1st
- *	segment are kept in order to to avoid 64-bit divide operations
+ *	segment are kept in order to avoid 64-bit divide operations
  *	that are expensive on 32-bit architectures.
  *
  *  note: Intel Pentium TSC never wraps around in several thousands of years.

sys/net/bpf.c

@@ -689,7 +689,7 @@ bpf_check_upgrade(u_long cmd, struct bpf_d *d, struct bpf_insn *fcode, int flen)
 	 * Check if cmd looks like snaplen setting from
 	 * pcap_bpf.c:pcap_open_live().
 	 * Note we're not checking .k value here:
-	 * while pcap_open_live() definitely sets to to non-zero value,
+	 * while pcap_open_live() definitely sets to non-zero value,
 	 * we'd prefer to treat k=0 (deny ALL) case the same way: e.g.
 	 * do not consider upgrading immediately
 	 */

sys/net80211/ieee80211_ht.c

@@ -3354,7 +3354,7 @@ ieee80211_add_htinfo_body(uint8_t *frm, struct ieee80211_node *ni)
 }
 
 /*
- * Add 802.11n HT information information element.
+ * Add 802.11n HT information element.
  */
 uint8_t *
 ieee80211_add_htinfo(uint8_t *frm, struct ieee80211_node *ni)

sys/net80211/ieee80211_scan_sta.c

@@ -119,7 +119,7 @@ static void sta_flush_table(struct sta_table *);
 /*
  * match_bss returns a bitmask describing if an entry is suitable
  * for use.  If non-zero the entry was deemed not suitable and it's
- * contents explains why.  The following flags are or'd to to this
+ * contents explains why.  The following flags are or'd to this
  * mask and can be used to figure out why the entry was rejected.
  */
 #define	MATCH_CHANNEL		0x00001	/* channel mismatch */

sys/powerpc/booke/locore.S

@@ -114,7 +114,7 @@ __start:
  *  - Switch to temp mapping
  *  - Map 64MB of RAM in TLB1[1]
  *  - Use AS=1, set EPN to KERNBASE and RPN to kernel load address
- *  - Switch to to TLB1[1] mapping
+ *  - Switch to TLB1[1] mapping
  *  - Invalidate temp mapping
  *
  * locore registers use:

sys/sparc64/pci/sbbc.c

@@ -327,7 +327,7 @@ sbbc_pci_attach(device_t dev)
 	int error, rid;
 	uint32_t val;
 
-	/* Nothing to to if we're not the chosen one. */
+	/* Nothing to do if we're not the chosen one. */
 	if ((node = OF_finddevice("/chosen")) == -1) {
 		device_printf(dev, "failed to find /chosen\n");
 		return (ENXIO);

sys/ufs/ffs/ffs_softdep.c

@@ -6903,7 +6903,7 @@ softdep_setup_freeblocks(ip, length, flags)
 	UFS_UNLOCK(ump);
 	DIP_SET(ip, i_blocks, DIP(ip, i_blocks) - datablocks);
 	/*
-	 * Push the zero'ed inode to to its disk buffer so that we are free
+	 * Push the zero'ed inode to its disk buffer so that we are free
 	 * to delete its dependencies below. Once the dependencies are gone
 	 * the buffer can be safely released.
 	 */