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Andy Lutomirski 91c9afaf97 checkpatch.pl: new instances of ENOSYS are errors 
ENOSYS means that a nonexistent system call was called.  We have a
bad habit of using it for things like invalid operations on
otherwise valid syscalls.  We should avoid this in new code.

Pervasive incorrect usage of ENOSYS came up at the kernel summit ABI
review discussion.  Let's see if checkpatch can help.

I'll submit a separate patch for include/uapi/asm-generic/errno.h.

Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-17 09:03:58 -04:00
..
basic kernel: build bin2c based on config option CONFIG_BUILD_BIN2C 2014-08-08 15:57:32 -07:00
coccinelle scripts/coccinelle/misc/bugon.cocci: update bug_on conversion warning 2015-04-14 16:48:56 -07:00
dtc kbuild: trivial - remove trailing empty lines 2014-06-10 00:04:06 +02:00
gdb scripts/gdb: add empty package initialization script 2015-02-28 09:57:51 -08:00
genksyms genksyms: fix typeof() handling 2014-04-03 16:20:52 -07:00
kconfig kconfig: Do not print status messages in make -s mode 2015-04-09 17:44:34 +02:00
ksymoops
mod arm64 updates for 3.18: 2014-10-08 05:34:24 -04:00
package builddeb: Try to determine distribution 2015-01-06 20:42:46 +01:00
rt-tester kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
selinux kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
tracing kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
.gitignore bin2c: move bin2c in scripts/basic 2014-08-08 15:57:32 -07:00
analyze_suspend.py PM / tools: analyze_suspend.py: update to v3.0 2014-08-09 02:47:58 +02:00
asn1_compiler.c X.509: silence asn1 compiler debug output 2015-01-23 12:10:39 +00:00
bloat-o-meter bloat-o-meter: Ignore syscall aliases SyS_ and compat_SyS_ 2014-08-23 13:08:48 -07:00
bootgraph.pl kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
checkincludes.pl
checkkconfigsymbols.py checkkconfigsymbols.py: improve detection of defects 2014-11-08 20:50:43 -08:00
checkpatch.pl checkpatch.pl: new instances of ENOSYS are errors 2015-04-17 09:03:58 -04:00
checkstack.pl Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2014-10-07 21:16:26 -04:00
checksyscalls.sh scripts/checksyscalls.sh: Make renameat optional 2014-05-20 10:59:38 +02:00
checkversion.pl kbuild: don't warn about include/linux/version.h not including itself 2011-04-29 15:38:55 +02:00
cleanfile
cleanpatch
coccicheck Coccinelle: Update information about the minimal version required 2013-07-03 22:58:20 +02:00
config kbuild: trivial - remove trailing empty lines 2014-06-10 00:04:06 +02:00
conmakehash.c kbuild: trivial - remove trailing spaces 2014-04-30 17:34:32 +02:00
decode_stacktrace.sh decode_stacktrace: make stack dump output useful again 2014-06-10 15:29:43 -07:00
decodecode scripts/decodecode: make faulting insn ptr more robust 2013-04-29 15:54:27 -07:00
depmod.sh depmod: pass -P $CONFIG_SYMBOL_PREFIX 2013-02-22 11:52:31 +01:00
diffconfig vfs,ext2: remove CONFIG_EXT2_FS_XIP and rename CONFIG_FS_XIP to CONFIG_FS_DAX 2015-02-16 17:56:04 -08:00
docproc.c kbuild: trivial - use tabs for code indent where possible 2014-06-10 14:00:53 +02:00
export_report.pl kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
extract-ikconfig scripts/extract-ikconfig: add xz compression support 2011-02-10 15:23:03 +01:00
extract-vmlinux scripts: add extract-vmlinux 2011-08-31 16:12:17 +02:00
gcc-goto.sh kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
gcc-ld kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
gcc-version.sh kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
gcc-x86_32-has-stack-protector.sh kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
gcc-x86_64-has-stack-protector.sh kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
gen_initramfs_list.sh kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
get_maintainer.pl scripts: Teach get_maintainer.pl about the new "R:" tag 2014-07-08 14:47:17 -07:00
gfp-translate chmod +x scripts/gfp-translate 2012-06-27 12:44:29 -07:00
headerdep.pl
headers_check.pl kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
headers_install.sh Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2014-10-14 09:22:26 +02:00
headers.sh CRIS: Fix headers_install 2014-12-20 00:01:12 +01:00
kallsyms.c Kbuild: kallsyms: drop special handling of pre-3.0 GCC symbols 2015-04-07 13:04:51 +02:00
Kbuild.include kbuild: allow cc-ifversion to have the argument for false condition 2015-01-09 17:25:44 +01:00
kernel-doc scripts/kernel-doc: don't eat struct members with __aligned 2014-12-10 17:41:02 -08:00
ld-version.sh Kbuild, lto: add ld-version and ld-ifversion macros 2014-02-13 20:25:00 -08:00
Lindent
link-vmlinux.sh kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
Makefile scripts/gdb: add infrastructure 2015-02-17 14:34:53 -08:00
Makefile.asm-generic kbuild: trivial - remove trailing empty lines 2014-06-10 00:04:06 +02:00
Makefile.build ftrace: allow architectures to specify ftrace compile options 2015-01-29 09:19:19 +01:00
Makefile.clean Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2015-02-19 10:07:08 -08:00
Makefile.dtbinst kbuild: include $(src)/Makefile rather than $(obj)/Makefile 2015-04-02 16:42:08 +02:00
Makefile.extrawarn kbuild, LLVMLinux: Supress warnings unless W=1-3 2014-08-05 15:40:01 +02:00
Makefile.fwinst kbuild: include $(src)/Makefile rather than $(obj)/Makefile 2015-04-02 16:42:08 +02:00
Makefile.headersinst kbuild: collect shorthands into scripts/Kbuild.include 2014-11-26 14:36:52 +01:00
Makefile.help
Makefile.host kbuild: handle the dependency of multi-objs hostprogs appropriately 2014-08-19 10:26:20 +02:00
Makefile.kasan kasan: enable instrumentation of global variables 2015-02-13 21:21:42 -08:00
Makefile.lib kasan: add kernel address sanitizer infrastructure 2015-02-13 21:21:40 -08:00
Makefile.modbuiltin
Makefile.modinst kbuild: handle module compression while running 'make modules_install'. 2014-08-27 21:54:12 +09:30
Makefile.modpost modpost: Optionally ignore secondary errors seen if a single module build fails 2013-09-23 15:45:03 +09:30
Makefile.modsign modsign: lookup lines ending in .ko in .mod files 2014-08-27 21:54:11 +09:30
makelst
markup_oops.pl kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
mkcompile_h kbuild: trivial - remove trailing spaces 2014-04-30 17:34:32 +02:00
mkmakefile kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
mksysmap kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
mkuboot.sh mkuboot.sh: Fail if mkimage is missing 2011-01-07 14:31:01 +01:00
mkversion
module-common.lds kernel: add support for .init_array.* constructors 2015-02-13 21:21:42 -08:00
namespace.pl
objdiff scripts: objdiff: support directories for the augument of record command 2014-06-10 14:59:33 +02:00
patch-kernel kbuild: trivial - remove trailing spaces 2014-04-30 17:34:32 +02:00
pnmtologo.c kbuild: trivial - remove trailing empty lines 2014-06-10 00:04:06 +02:00
profile2linkerlist.pl kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
recordmcount.c s390/ftrace,kprobes: allow to patch first instruction 2014-10-27 13:27:27 +01:00
recordmcount.h recordmcount/MIPS: Fix possible incorrect mcount_loc table entries in modules 2014-06-26 10:48:19 +01:00
recordmcount.pl Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2015-02-11 17:42:32 -08:00
setlocalversion Fix detectition of kernel git repository in setlocalversion script [take #2] 2014-01-03 14:48:42 +01:00
show_delta kbuild: trivial - remove trailing empty lines 2014-06-10 00:04:06 +02:00
sign-file treewide: fix errors in printk 2014-09-01 11:18:25 +02:00
sortextable.c xtensa: enable sorting extable at build time 2014-04-02 01:35:50 +04:00
sortextable.h scripts/sortextable: suppress warning: `relocs_size' may be used uninitialized 2014-10-14 02:18:23 +02:00
spelling.txt checkpatch: spell check reudce 2015-04-17 09:03:56 -04:00
tags.sh Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2014-10-14 09:27:48 +02:00
unifdef.c unifdef: update to upstream version 2.5 2011-01-22 15:50:59 +01:00
ver_linux
xz_wrap.sh kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00