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Thierry Reding 75096579c3 lib: devres: Introduce devm_ioremap_resource() 
The devm_request_and_ioremap() function is very useful and helps avoid a
whole lot of boilerplate. However, one issue that keeps popping up is
its lack of a specific error code to determine which of the steps that
it performs failed. Furthermore, while the function gives an example and
suggests what error code to return on failure, a wide variety of error
codes are used throughout the tree.

In an attempt to fix these problems, this patch adds a new function that
drivers can transition to. The devm_ioremap_resource() returns a pointer
to the remapped I/O memory on success or an ERR_PTR() encoded error code
on failure. Callers can check for failure using IS_ERR() and determine
its cause by extracting the error code using PTR_ERR().

devm_request_and_ioremap() is implemented as a wrapper around the new
API and return NULL on failure as before. This ensures that backwards
compatibility is maintained until all users have been converted to the
new API, at which point the old devm_request_and_ioremap() function
should be removed.

A semantic patch is included which can be used to convert from the old
devm_request_and_ioremap() API to the new devm_ioremap_resource() API.
Some non-trivial cases may require manual intervention, though.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-22 09:41:43 -08:00
..
basic fixdep: fix extraneous dependencies 2011-09-09 11:45:47 +02:00
coccinelle lib: devres: Introduce devm_ioremap_resource() 2013-01-22 09:41:43 -08:00
dtc script: dtc: clean generated files 2012-11-21 15:53:22 +00:00
genksyms scripts/genksyms: clean lex/yacc generated files 2012-01-08 14:48:15 +01:00
kconfig menuconfig: Replace CIRCLEQ by list_head-style lists. 2012-10-25 15:06:00 +02:00
ksymoops
mod modpost.c: Stop checking __dev* section mismatches 2012-11-30 12:08:42 -08:00
package Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2012-10-12 10:27:27 +09:00
rt-tester Fix common misspellings 2011-03-31 11:26:23 -03:00
selinux Create Documentation/security/, 2011-05-19 15:59:38 -07:00
tracing
.gitignore X.509: Add simple ASN.1 grammar compiler 2012-10-08 13:50:19 +10:30
asn1_compiler.c X.509: Add simple ASN.1 grammar compiler 2012-10-08 13:50:19 +10:30
bin2c.c
bloat-o-meter bloat-o-meter: include read-only data section in report 2011-03-22 17:44:17 -07:00
bootgraph.pl bootgraph.pl: relax timing information requirements 2011-06-13 00:04:57 +02:00
checkincludes.pl checkincludes: fix perlcritic warnings 2010-03-07 21:19:57 +01:00
checkkconfigsymbols.sh checkkconfigsymbols.sh: Kconfig symbols sometimes have lowercase letters 2010-06-03 10:39:39 +02:00
checkpatch.pl checkpatch: warn on uapi #includes that #include <uapi/... 2012-12-20 17:40:20 -08:00
checkstack.pl Haavard Skinnemoen has left Atmel 2011-05-18 23:24:50 +02:00
checksyscalls.sh checksyscalls: fix "here document" handling 2012-09-25 08:59:21 -07:00
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 coccicheck: Add the rep+ctxt mode 2012-10-11 15:11:12 +02:00
config scripts/config: Fix wrong "shift" for --keep-case 2012-12-14 14:16:10 +01:00
conmakehash.c Fix all -Wmissing-prototypes warnings in x86 defconfig 2009-09-23 07:39:28 -07:00
decodecode scripts/decodecode: Fixup trapping instruction marker 2012-08-16 11:15:09 -07:00
depmod.sh kbuild: do not check for ancient modutils tools 2012-01-23 15:12:19 +01:00
diffconfig
docproc.c docproc: cleanup brace placement 2011-06-16 20:40:03 +02:00
export_report.pl export_report: use warn() to issue WARNING, so they go to stderr 2011-05-24 16:07:07 +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 ARM: 7333/2: jump label: detect %c support for ARM 2012-03-24 09:38:56 +00:00
gcc-version.sh kbuild: Fix gcc -x syntax 2012-10-03 09:03:24 +02:00
gcc-x86_32-has-stack-protector.sh kbuild: Fix gcc -x syntax 2012-10-03 09:03:24 +02:00
gcc-x86_64-has-stack-protector.sh kbuild: Fix gcc -x syntax 2012-10-03 09:03:24 +02:00
gen_initramfs_list.sh Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6 2011-05-24 13:31:37 -07:00
get_maintainer.pl get_maintainer: Fix --help warning 2012-06-20 14:39:36 -07:00
gfp-translate chmod +x scripts/gfp-translate 2012-06-27 12:44:29 -07:00
headerdep.pl headerdep: perlcritic warning 2010-03-23 12:26:38 +01:00
headers.sh kbuild, headers.sh: Don't make archheaders explicitly 2011-11-22 14:47:50 -08:00
headers_check.pl headers_check: recursively search for linux/types.h inclusion 2012-03-26 14:54:27 +02:00
headers_install.pl UAPI: Strip _UAPI prefix on header install no matter the whitespace 2013-01-02 17:36:10 -08:00
kallsyms.c scripts/kallsyms.c: fix potential segfault 2011-05-12 17:23:40 +02:00
Kbuild.include Merge branch 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2012-10-08 07:56:10 +09:00
kernel-doc misc: remove __dev* attributes. 2013-01-03 15:57:16 -08:00
Lindent
link-vmlinux.sh Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lliubbo/blackfin 2012-09-12 07:12:53 +08:00
Makefile X.509: Add simple ASN.1 grammar compiler 2012-10-08 13:50:19 +10:30
Makefile.asm-generic uapi: Allow automatic generation of uapi/asm/ header files 2012-10-17 12:25:44 +01:00
Makefile.build X.509: Add simple ASN.1 grammar compiler 2012-10-08 13:50:19 +10:30
Makefile.clean kbuild: Really don't clean bounds.h and asm-offsets.h 2010-03-11 11:15:22 +01:00
Makefile.fwinst kbuild: Fix accidental revert in commit fe04ddf 2012-10-15 13:01:05 -07:00
Makefile.headersinst UAPI: Plumb the UAPI Kbuilds into the user header installation and checking 2012-10-02 18:01:57 +01:00
Makefile.help Add a target to use the Coccinelle checker 2010-06-12 00:00:29 +02:00
Makefile.host
Makefile.lib kbuild: centralize .dts->.dtb rule 2012-11-30 10:52:19 -06:00
Makefile.modbuiltin kbuild: Create output directory in Makefile.modbuiltin 2010-06-10 12:23:08 +02:00
Makefile.modinst modules: don't break modules_install on external modules with no key. 2012-11-06 11:52:24 +10:30
Makefile.modpost kbuild: sign the modules at install time 2012-10-19 08:27:43 -07:00
Makefile.modsign MODSIGN: Add modules_sign make target 2012-12-14 13:05:28 +10:30
makelst
markup_oops.pl Merge branch 'for-35' of git://repo.or.cz/linux-kbuild 2010-06-01 08:55:52 -07:00
mkcompile_h Fix handling of backlash character in LINUX_COMPILE_BY name 2011-04-29 15:55:45 +02:00
mkmakefile kbuild: silence generated makefile message 2011-07-20 17:08:08 +02:00
mksysmap trivial: typo in comment in mksysmap 2012-07-20 10:36:05 +02:00
mkuboot.sh mkuboot.sh: Fail if mkimage is missing 2011-01-07 14:31:01 +01:00
mkversion
module-common.lds module: Sort exported symbols 2011-05-19 16:55:27 +09:30
namespace.pl Revert "namespace: add source file location exceptions" 2010-10-28 00:59:56 +02:00
patch-kernel scripts/patch-kernel: digest kernel.org hosted .xz patches 2012-03-30 15:23:36 +02:00
pnmtologo.c scripts/pnmtologo: fix for plain PBM 2012-11-20 11:58:03 +01:00
profile2linkerlist.pl profile2linkerlist: fix perl warnings 2010-03-07 21:39:33 +01:00
recordmcount.c ftrace/s390: mcount offset calculation 2011-05-16 15:05:06 -04:00
recordmcount.h ftrace: Make recordmcount.c handle __fentry__ 2012-08-23 11:24:43 -04:00
recordmcount.pl ftrace/s390: mcount offset calculation 2011-05-16 15:05:06 -04:00
setlocalversion setlocalversion: Use "grep -q" instead of piping output to "read dummy" 2012-03-26 22:54:00 +02:00
show_delta scripts: change scripts to use system python instead of env 2010-02-02 14:33:56 +01:00
sign-file sign-file: fix the perl warning message when extracting ASN.1 2012-11-21 06:52:12 -10:00
sortextable.c ARM: 7568/1: Sort exception table at compile time 2012-11-04 10:31:16 +00:00
sortextable.h scripts/sortextable: Handle relative entries, and other cleanups 2012-04-24 11:42:20 -07:00
tags.sh scripts/tags.sh: Support compiled source 2012-12-11 14:25:42 +01:00
unifdef.c unifdef: update to upstream version 2.5 2011-01-22 15:50:59 +01:00
ver_linux
xz_wrap.sh xz: Enable BCJ filters on SPARC and 32-bit x86 2012-04-18 13:13:18 -07:00