$ # search for ;-) in linux kernel
$ # of course we can use grep, but I like ack-grep more.
$ ack-grep ';-\)'
Documentation/DocBook/filesystems.xml
12839:Try to reserve the right number of blocks the first time. ;-). This will

Documentation/DocBook/filesystems.tmpl
256:Try to reserve the right number of blocks the first time. ;-). This will

include/linux/ucb1400.h
12: * dont bother Nicolas please ;-)

include/uapi/linux/fd.h
99:    * ultra cheap floppies ;-)

include/uapi/linux/bpqether.h
23: * to his Ethernet card he may find this useful. ;-)

include/uapi/linux/wireless.h
335: * We now have 32 commands, so a bit more space ;-).

include/uapi/linux/irda.h
175:/* No reason to include <linux/if.h> just because of this one ;-) */

include/net/iw_handler.h
81: * Good luck with migration to the new API ;-)
273: * cool features we might need one day ;-) */
292: * (that's the perfect hash table ;-).
305:    __u16       flags;      /* More to come ;-) */

include/net/inet_hashtables.h
77: * ports are created in O(1) time?  I thought so. ;-)    -DaveM

drivers/input/touchscreen/ucb1400_ts.c
10: * dont bother Nicolas please ;-)

drivers/gpu/drm/nouveau/nv04_dfp.c
72:  * Luckily we do know the values ;-)

drivers/usb/atm/ueagle-atm.c
1848:   u16 zero = 0;   /* ;-) */

drivers/usb/serial/mct_u232.h
453: * which says "U232-P9" ;-)

drivers/usb/serial/ark3116.c
788: * may be different for the one you have ;-).
816: * investigate that aspect. However, I can speculate ;-).

drivers/ide/ide-cd.c
14: * Suggestions are welcome. Patches that work are more welcome though. ;-)

drivers/ide/opti621.c
97: /* hmm, setupvic.exe does this ;-) */

drivers/mfd/ucb1400_core.c
12: * dont bother Nicolas please ;-)

drivers/staging/rtl8192u/ieee80211/ieee80211_softmac_wx.c
8: * copyright of who own it's copyright ;-)
11: * own it's copyright ;-)

drivers/staging/rtl8192u/ieee80211/ieee80211.h
1941:    * ad-hoc is a mixture ;-).

drivers/staging/comedi/drivers/usbduxfast.c
132: * basically when the mux gives up ;-)

drivers/staging/comedi/drivers/cb_pcidda.c
221: * I will program this later... ;-)

drivers/staging/rtl8192e/rtllib_softmac_wx.c
8: * copyright of who own it's copyright ;-)
11: * own it's copyright ;-)

drivers/staging/rtl8192e/rtllib.h
2213:    * ad-hoc is a mixture ;-).

drivers/staging/rtl8187se/ieee80211/ieee80211_softmac_wx.c
8: * copyright of who own it's copyright ;-)
11: * own it's copyright ;-)

drivers/staging/rtl8187se/ieee80211/ieee80211.h
945:     * ad-hoc is a mixture ;-).

drivers/isdn/pcbit/capi.c
354:     * Change it: we should send 'Sic transit gloria Mundi' here ;-)

drivers/scsi/tmscsim.h
280:#define WIDE_ENABLE BIT2    /* Not used ;-) */
281:#define WIDE_NEGO_DONE  BIT3    /* Not used ;-) */

drivers/scsi/ncr53c8xx.c
2683:   **  driver only supports conformant devices for tags. ;-)
2689:   **  Still an aggressive optimization. ;-)
5611:   **  Bells and whistles   ;-)

drivers/scsi/tmscsim.c
98: *   2.0d  98/12/25  KG  Christmas release ;-) Message handling  *

drivers/scsi/st.c
2829:           STp->density_changed = 1;   /* At least we tried ;-) */
2837:               STp->blksize_changed = 1; /* At least we tried ;-) */

drivers/scsi/sym53c8xx_2/sym_hipd.c
1815:    *  regardless revision id (kind of post-chip-design feature. ;-))

drivers/scsi/sym53c8xx_2/sym_fw.c
392:         *  We use the bogus value 0xf00ff00f ;-)

drivers/atm/firestream.c
437:   manage to lose two lines or more, keep me updated! ;-)

drivers/parisc/pdc_stable.c
664: * I have NFC how to interpret the content of that register ;-).

drivers/char/ppdev.c
25: *              confused with ioctl(fd, SETPHASER, &stun). ;-)

drivers/media/platform/indycam.c
22:/* IndyCam decodes stream of photons into digital image representation ;-) */

drivers/media/pci/saa7134/saa7134-cards.c
1619:       /* "Matteo Az" <matte.az@nospam.libero.it> ;-) */

drivers/media/common/saa7146/saa7146_vbi.c
22:    don't let me explain it. ;-) */

drivers/block/amiflop.c
53: * - fixed some race conditions (who finds the next may send it to me ;-)
659: * (Add other formats here ;-))

drivers/video/pvr2fb.c
764: * PCI-based version of these things ;-)

drivers/video/pm3fb.c
1264:    * nasty stuff IMHO ;-)

drivers/video/console/newport_con.c
503:     * be supported ;-) */

drivers/cdrom/cdrom.c
15:   Patches that work are more welcome though.  ;-)

drivers/net/irda/vlsi_ir.h
536: * ### FIXME: depends on endianess (but there ain't no non-i586 ob800 ;-)

drivers/net/irda/old_belkin-sir.c
49: * the driver is concerned, but you might not like it very much ;-)
58: * prevent Linux-IrDA to use any other speed than 9600 b/s ;-) This
63: * so a lot of info here might be totally wrong. Blame me ;-)
144:    /* This dongles speed "defaults" to 9600 bps ;-) */

drivers/net/irda/vlsi_ir.c
1060:    * what we want after we've just called dev_kfree_skb_any ;-)

drivers/net/irda/irda-usb.c
682:        /* Can't be a bad idea to reset the speed ;-) - Jean II */
835:             * point the URB will be idle ;-) - Jean II */

drivers/net/wireless/airo.c
7092:           /* This is broken, fixme ;-) */

drivers/net/wireless/ath/ath5k/dma.c
860:     * guess we can tweak it and see how it goes ;-)

drivers/net/wireless/ath/carl9170/main.c
1204:           /* The device is gone... together with the key ;-) */

drivers/net/hamradio/scc.c
85:           * Invents brand new bugs... ;-)
1337:           if (scc->stat.tx_state == 0)    /* only switch baudrate on rx... ;-) */

drivers/net/ethernet/alteon/acenic.c
193: * the parts dealing with the i2c eeprom on the card ;-)

drivers/net/ethernet/natsemi/ibmlana.c
31:    him as a beta tester to trace down the address filter bug ;-)
57: not only compiles as a modules ;-)
654:    /* fetch descriptor (we forgot the size ;-) */
842:       Sorry Linus for the filler string but I couldn't resist ;-) */

drivers/net/ethernet/seeq/sgiseeq.c
39: * making this driver 2,000 times easier to write. ;-)
85:struct sgiseeq_init_block { /* Note the name ;-) */

drivers/md/md.c
6315: * dosfs just mad... ;-)

usr/include/linux/fd.h
99:    * ultra cheap floppies ;-)

usr/include/linux/bpqether.h
23: * to his Ethernet card he may find this useful. ;-)

usr/include/linux/wireless.h
335: * We now have 32 commands, so a bit more space ;-).

usr/include/linux/irda.h
175:/* No reason to include <linux/if.h> just because of this one ;-) */

arch/alpha/kernel/machvec_impl.h
14:   to be that of the cache. Now we can read and write it as we like.  ;-)  */

arch/alpha/kernel/smp.c
196: * interesting message.  ;-)

arch/alpha/kernel/sys_miata.c
249:        /* Who said DEC engineers have no sense of humor? ;-)  */

arch/alpha/kernel/sys_alcor.c
210:        /* Who said DEC engineer's have no sense of humor? ;-)  */

arch/powerpc/include/asm/sfp-machine.h
116:   everything easier ;-).  */

arch/powerpc/platforms/52xx/efika.c
197:        ppc_md.progress("Linux/PPC " UTS_RELEASE " running on Efika ;-)\n", 0x0);

arch/powerpc/mm/pgtable_64.c
291:     * which means that we just cleared supervisor access... oops ;-) This

arch/powerpc/mm/pgtable_32.c
156:     * which means that we just cleared supervisor access... oops ;-) This

arch/mips/include/asm/mach-ip32/mc146818rtc.h
30: * and no O2 user in 22th century ;-)

arch/mips/include/asm/sgi/ip22.h
21: * HAL2 driver). This will prevent many complications, trust me ;-)

arch/mips/include/asm/sgi/hpc3.h
198:     * you it was a peculiar bug. ;-)

arch/mips/sgi-ip22/ip28-berr.c
319:    /* This is likely rather similar to correct code ;-) */

arch/mips/sgi-ip22/ip22-time.c
81:  * but this one works just fine so I am not going to futz around. ;-)

arch/mips/sgi-ip22/ip22-int.c
323:    /* cascade in cascade. i love Indy ;-) */

arch/mips/sni/time.c
142:     * but this one works just fine so I am not going to futz around. ;-)

arch/ia64/kernel/fsys.S
10: *           probably broke it along the way... ;-)

arch/um/drivers/cow_user.c
372:         * Ever heard about bug-to-bug-compatibility ? ;-) */

arch/s390/kvm/kvm-s390.c
91: /* every s390 is virtualization enabled ;-) */

arch/x86/kvm/x86.c
1702:    * which we perfectly emulate ;-). Any other value should be at least

arch/x86/kernel/cpu/cyrix.c
345:    default:  /* unknown (shouldn't happen, we know everyone ;-) */

arch/x86/mm/memtest.c
28: 0x7a6c7258554e494cULL, /* yeah ;-) */

arch/sparc/include/asm/ross.h
24: * Phew, lots of fields there ;-)

arch/sparc/include/asm/head_32.h
29: * entry sequences are also HyperSparc pipeline friendly ;-)

arch/sparc/kernel/devices.c
124:            /* Probably a sun4e, Sun is trying to trick us ;-) */

arch/sparc/kernel/wof.S
280:     * to kernel mode is not necessarily these days. ;-)

kernel/rcutiny_plugin.h
148: * there can be but one running RCU reader at a time.  ;-)

kernel/power/snapshot.c
239: *  top for now, but let's avoid making unnecessary assumptions ;-).

scripts/basic/fixdep.c
38: * so most likely only his driver ;-)
86: * be fast ;-) We don't even try to really parse the header files, but

debian/headertmp/usr/include/linux/fd.h
99:    * ultra cheap floppies ;-)

debian/headertmp/usr/include/linux/bpqether.h
23: * to his Ethernet card he may find this useful. ;-)

debian/headertmp/usr/include/linux/wireless.h
335: * We now have 32 commands, so a bit more space ;-).

debian/headertmp/usr/include/linux/irda.h
175:/* No reason to include <linux/if.h> just because of this one ;-) */

debian/hdrtmp/usr/src/linux-headers-3.7.8-light/include/linux/ucb1400.h
12: * dont bother Nicolas please ;-)

debian/hdrtmp/usr/src/linux-headers-3.7.8-light/include/uapi/linux/fd.h
99:    * ultra cheap floppies ;-)

debian/hdrtmp/usr/src/linux-headers-3.7.8-light/include/uapi/linux/bpqether.h
23: * to his Ethernet card he may find this useful. ;-)

debian/hdrtmp/usr/src/linux-headers-3.7.8-light/include/uapi/linux/wireless.h
335: * We now have 32 commands, so a bit more space ;-).

debian/hdrtmp/usr/src/linux-headers-3.7.8-light/include/uapi/linux/irda.h
175:/* No reason to include <linux/if.h> just because of this one ;-) */

debian/hdrtmp/usr/src/linux-headers-3.7.8-light/include/net/iw_handler.h
81: * Good luck with migration to the new API ;-)
273: * cool features we might need one day ;-) */
292: * (that's the perfect hash table ;-).
305:    __u16       flags;      /* More to come ;-) */

debian/hdrtmp/usr/src/linux-headers-3.7.8-light/include/net/inet_hashtables.h
77: * ports are created in O(1) time?  I thought so. ;-)    -DaveM

debian/hdrtmp/usr/src/linux-headers-3.7.8-light/scripts/basic/fixdep.c
38: * so most likely only his driver ;-)
86: * be fast ;-) We don't even try to really parse the header files, but

sound/oss/dmasound/dmasound_core.c
787:           OSS behaviour - while we still have soft translations ;-) */

sound/soc/sh/ssi.c
183:     * Waiting for ASoC to get TDM support ;-)

fs/fs_struct.c
113:    /* We don't need to lock fs - think why ;-) */

fs/jfs/super.c
253:            /* Don't do anything ;-) */

fs/buffer.c
1539: * dirty (hopefully that will not happen until we will free that block ;-)

fs/aio.c
996: *  events fetched (0 or 1 ;-)

fs/ocfs2/dlm/dlmmaster.c
2125: * lockres because this lockres is used to kick off recovery! ;-)

fs/ocfs2/inode.c
313:         * handle superblocks today ;-) */

net/ax25/af_ax25.c
352: *        VERY useful for debugging ;-)

net/irda/ircomm/ircomm_tty.c
555:     * do_softint() ;-)

net/irda/wrapper.c
170: * And reduce wrapper.o by ~900B in the process ;-)

net/irda/irnet/irnet_irda.c
321:   * See you there ;-) */
1367:  /* The following code is a bit tricky, so need comments ;-)

net/irda/irnet/irnet.h
201: *    better detect cut'n'paste error ;-)
396: * "ap". Apart from that, it's exactly the same structure ;-)

net/irda/irqueue.c
653: * And by the way, it's also faster, because we skip the search phase ;-)

net/irda/irlmp_event.c
466:         * cleaned *NOW* ;-) - Jean II */

net/irda/af_irda.c
886:     * calling us, the data is waiting for us ;-)
2520:       /* This function is just another way of seeing life ;-)

net/wireless/wext-proc.c
13: * This is the most popular part of the Wireless Extensions ;-)

net/wireless/wext-core.c
862: * Hopefully, the driver will remember to do a commit in "open()" ;-)

tools/perf/builtin-top.c
763:         * invalid --vmlinux ;-)

tools/perf/util/python.c
241:     * making this method useful ;-)