The patch titled Add macros similar to min/max/min_t/max_t has been added to the -mm tree. Its filename is add-macros-similar-to-min-max-min_t-max_t.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: Add macros similar to min/max/min_t/max_t From: Harvey Harrison <harvey.harrison@xxxxxxxxx> Also, change the variable names used in the min/max macros to avoid shadowed variable warnings when min/max min_t/max_t are nested. Small formatting changes to make all the macros have a similar form. [akpm@xxxxxxxxxxxxxxxxxxxx: coding-style fixes] [akpm@xxxxxxxxxxxxxxxxxxxx: fix v4l build] Signed-off-by: Harvey Harrison <harvey.harrison@xxxxxxxxx> Cc: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Cc: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx> Cc: Jeff Garzik <jeff@xxxxxxxxxx> Cc: Tejun Heo <htejun@xxxxxxxxx> Cc: Michael Buesch <mb@xxxxxxxxx> Cc: "John W. Linville" <linville@xxxxxxxxxxxxx> Cc: Miklos Szeredi <miklos@xxxxxxxxxx> Cc: Dmitry Torokhov <dtor@xxxxxxx> Cc: Jiri Kosina <jkosina@xxxxxxx> Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- drivers/media/video/bt8xx/bttvp.h | 2 drivers/media/video/usbvideo/vicam.c | 6 -- include/linux/kernel.h | 63 +++++++++++++++++-------- 3 files changed, 45 insertions(+), 26 deletions(-) diff -puN drivers/media/video/bt8xx/bttvp.h~add-macros-similar-to-min-max-min_t-max_t drivers/media/video/bt8xx/bttvp.h --- a/drivers/media/video/bt8xx/bttvp.h~add-macros-similar-to-min-max-min_t-max_t +++ a/drivers/media/video/bt8xx/bttvp.h @@ -82,8 +82,6 @@ /* Limits scaled width, which must be a multiple of 4. */ #define MAX_HACTIVE (0x3FF & -4) -#define clamp(x, low, high) min (max (low, x), high) - #define BTTV_NORMS (\ V4L2_STD_PAL | V4L2_STD_PAL_N | \ V4L2_STD_PAL_Nc | V4L2_STD_SECAM | \ diff -puN drivers/media/video/usbvideo/vicam.c~add-macros-similar-to-min-max-min_t-max_t drivers/media/video/usbvideo/vicam.c --- a/drivers/media/video/usbvideo/vicam.c~add-macros-similar-to-min-max-min_t-max_t +++ a/drivers/media/video/usbvideo/vicam.c @@ -70,12 +70,6 @@ #define VICAM_HEADER_SIZE 64 -#define clamp( x, l, h ) max_t( __typeof__( x ), \ - ( l ), \ - min_t( __typeof__( x ), \ - ( h ), \ - ( x ) ) ) - /* Not sure what all the bytes in these char * arrays do, but they're necessary to make * the camera work. diff -puN include/linux/kernel.h~add-macros-similar-to-min-max-min_t-max_t include/linux/kernel.h --- a/include/linux/kernel.h~add-macros-similar-to-min-max-min_t-max_t +++ a/include/linux/kernel.h @@ -335,33 +335,60 @@ extern void print_hex_dump_bytes(const c #endif /* __LITTLE_ENDIAN */ /* - * min()/max() macros that also do + * min()/max()/clamp() macros that also do * strict type-checking.. See the * "unnecessary" pointer comparison. */ -#define min(x,y) ({ \ - typeof(x) _x = (x); \ - typeof(y) _y = (y); \ - (void) (&_x == &_y); \ - _x < _y ? _x : _y; }) - -#define max(x,y) ({ \ - typeof(x) _x = (x); \ - typeof(y) _y = (y); \ - (void) (&_x == &_y); \ - _x > _y ? _x : _y; }) +#define min(x, y) ({ \ + typeof(x) _min1 = (x); \ + typeof(y) _min2 = (y); \ + (void) (&_min1 == &_min2); \ + _min1 < _min2 ? _min1 : _min2; }) + +#define max(x, y) ({ \ + typeof(x) _max1 = (x); \ + typeof(y) _max2 = (y); \ + (void) (&_max1 == &_max2); \ + _max1 > _max2 ? _max1 : _max2; }) + +#define clamp(val, min, max) ({ \ + typeof(val) __val = (val); \ + typeof(min) __min = (min); \ + typeof(max) __max = (max); \ + (void) (&__val == &__min); \ + (void) (&__val == &__max); \ + __val = __val < __min ? __min: __val; \ + __val > __max ? __max: __val; }) /* * ..and if you can't take the strict * types, you can specify one yourself. * - * Or not use min/max at all, of course. + * Or not use min/max/clamp at all, of course. */ -#define min_t(type,x,y) \ - ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; }) -#define max_t(type,x,y) \ - ({ type __x = (x); type __y = (y); __x > __y ? __x: __y; }) - +#define min_t(type, x, y) ({ \ + type __min1 = (x); \ + type __min2 = (y); \ + __min1 < __min2 ? __min1: __min2; }) + +#define max_t(type, x, y) ({ \ + type __max1 = (x); \ + type __max2 = (y); \ + __max1 > __max2 ? __max1: __max2; }) + +#define clamp_t(type, val, min, max) ({ \ + type __val = (val); \ + type __min = (min); \ + type __max = (max); \ + __val = __val < __min ? __min: __val; \ + __val > __max ? __max: __val; }) + +#define clamp_val(val, min, max) ({ \ + typeof(val) __val = (val); \ + typeof(val) __min = (min); \ + typeof(val) __max = (max); \ + __val = __val < __min ? __min: __val; \ + __val > __max ? __max: __val; }) /** * container_of - cast a member of a structure out to the containing structure _ Patches currently in -mm which might be from harvey.harrison@xxxxxxxxx are origin.patch git-x86.patch git-acpi.patch git-alsa-tiwai.patch agp-fix-shadowed-variable-warning-in-amd-k7-agpc.patch git-cifs.patch cifs-remove-global_extern-macro.patch powerpc-replace-remaining-__function__-occurences.patch ppc-replace-remaining-__function__-occurences.patch radeon-fix-integer-as-null-pointer-warnings-in-radeon_memc.patch git-dvb.patch git-dlm.patch git-ieee1394.patch infiniband-replace-remaining-__function__-occurrences.patch input-replace-remaining-__function__-occurrences.patch git-jfs.patch git-kvm.patch pata_amd-fix-sparse-warning.patch git-async-tx.patch git-mips.patch mips-replace-remaining-__function__-occurences.patch jffs2-include-function-prototype-for-jffs2_ioctl.patch jffs2-fix-sparse-warning-in-nodemgmtc.patch jffs2-fix-sparse-warning-in-writec.patch jffs2-fix-sparse-warnings-in-gcc.patch mtd-replace-remaining-__function__-occurrences.patch blackfin-replace-remaining-__function__-occurences.patch nfs-replace-remaining-__function__-occurrences.patch git-nfsd.patch parisc-replace-remaining-__function__-occurences.patch drivers-parisc-replace-remaining-__function__-occurrences.patch pcmcia-replace-remaining-__function__-occurrences.patch git-selinux.patch drivers-s390-replace-remaining-__function__-occurrences.patch scsi-replace-remaining-__function__-occurrences.patch fusion-replace-remaining-__function__-occurrences.patch scsi-replace-__inline-with-inline.patch scsi-chc-fix-shadowed-variable-warnings.patch scsi-chc-fix-shadowed-variable-warnings-checkpatch-fixes.patch block-replace-remaining-__function__-occurrences.patch git-watchdog.patch xfs-replace-remaining-__function__-occurrences.patch xfs-replace-__inline-with-inline.patch xtensa-replace-remaining-__function__-occurences.patch remove-sparse-warning-for-mmzoneh.patch remove-sparse-warning-for-mmzoneh-checkpatch-fixes.patch smack-fix-integer-as-null-pointer-warning-in-smack_lsmc.patch alpha-remove-remaining-__function__-occurences.patch alpha-replace-__inline-with-inline.patch power-replace-remaining-__function__-occurrences.patch m68k-replace-remaining-__function__-occurences.patch uml-replace-remaining-__function__-occurences.patch adfs-work-around-bogus-sparse-warning.patch coda-add-static-to-functions-in-dirc.patch befs-fix-sparse-warning-in-linuxvfsc.patch autofs4-fix-sparse-warning-in-rootc.patch firmware-replace-remaining-__function__-occurrences.patch drivers-misc-replace-remaining-__function__-occurrences.patch ioc3c-replace-remaining-__function__-occurrences.patch ncpfs-add-prototypes-to-ncp_fsh.patch ncpfs-fix-sparse-warnings-in-ioctlc.patch ncpfs-fix-sparse-warning-in-ncpsign_kernelc.patch serial-remove-double-initializer.patch char-make-functions-static-in-synclinkmpc.patch spi-replace-remaining-__function__-occurrences.patch capi-fix-sparse-warnings-using-integer-as-null-pointer.patch avm-fix-sparse-warning-using-integer-as-null-pointer.patch eicon-fix-sparse-integer-as-null-pointer-warnings.patch isdn-replace-remaining-__function__-occurrences.patch xen-make-blkif_getgeo-static.patch ecryptfs-replace-remaining-__function__-occurrences.patch rtc-replace-remaining-__function__-occurrences.patch fbcon-replace-mono_col-macro-with-static-inline.patch fbcon-replace-mono_col-macro-with-static-inline-fix.patch video-replace-remaining-__function__-occurrences.patch md-fix-integer-as-null-pointer-warnings-in-mdc.patch md-replace-remaining-__function__-occurrences.patch ext2-replace-remaining-__function__-occurrences.patch jbd-sparse-warnings-in-revokec-journalc.patch ext3-replace-remaining-__function__-occurrences.patch jbd-replace-remaining-__function__-occurrences.patch ufs-replace-remaining-__function__-occurrences.patch ufs-replace-__inline-with-inline.patch udf-fix-sparse-warning-in-nameic.patch reiserfs-fix-sparse-warnings-in-fix_nodec.patch reiserfs-fix-sparse-warnings-in-do_balanc.patch reiserfs-fix-sparse-warning-in-nameic.patch reiserfs-fix-sparse-warnings-in-lbalancec.patch reiserfs-fix-sparse-warning-in-journalc.patch reiserfs-fix-more-sparse-warnings-in-do_balanc.patch reiserfs-replace-remaining-__function__-occurrences.patch cgroup-fix-sparse-warning-of-shadow-symbol-in-cgroupc.patch ext4-replace-remaining-__function__-occurrences.patch jdb2-replace-remaining-__function__-occurrences.patch char-fix-sparse-shadowed-variable-warnings-in-espc.patch char-espc-fix-possible-double-unlock.patch char-rocketc-fix-sparse-variable-shadowing-and-int-as-null-pointer.patch cycladesc-fix-sparse-shadowed-variable-warnings.patch epcac-static-functions-and-integer-as-null-pointer-fixes.patch epcac-static-functions-and-integer-as-null-pointer-fixes-checkpatch-fixes.patch add-macros-similar-to-min-max-min_t-max_t.patch ide-eliminate-fit-macro.patch ata-remove-fit-macro.patch b43-replace-limit_value-macro-with-clamp_val.patch b43legacy-replace-limit_value-macro-with-clamp_val.patch fuse-use-clamp-rather-than-nested-min-max.patch ide-tape-use-clamp_t-rather-than-nested-min_t-max_t.patch input-ff-memlessc-use-clamp_val-macro.patch dccp-ccid2c-ccid3c-use-clamp-clamp_t.patch drivers-replace-remaining-__function__-occurrences.patch mm-remove-remaining-__function__-occurances.patch block-remove-remaining-__function__-occurances.patch kernel-replace-remaining-__function__-occurances.patch lib-replace-remaining-__function__-occurances.patch afs-replace-remaining-__function__-occurrences.patch fs-replace-remaining-__function__-occurrences.patch drivers-char-replace-remaining-__function__-occurrences.patch serial-replace-remaining-__function__-occurrences.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html