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2014-08-06Merge tag 'sound-3.17-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound updates from Takashi Iwai: "There've been many updates in ASoC side at this time, especially the framework enhancement for multiple CODECs on a single DAI and more componentization works. The only major change in ALSA core is the addition of timestamp type in sw_params field. This should behave in backward compatible way. Other than that, there are lots of small changes and new drivers in wide range, including a large code cut in HD-audio driver for deprecated static quirks. Some highlights are below: ALSA Core: - Add the new timestamp type field to sw_params to choose MONOTONIC_RAW type HD-audio: - Continued conversion to standard printk macros, generic code cleanups - Removal of obsoleted static quirk codes for Conexant and C-Media codecs - Fixups for HP Envy TS, Dell XPS 15, HP and Dell mute/mic LED, Gigabyte BXBT-2807 mobo - Intel Braswell support ASoC: - Support for multiple CODECs attached to a single DAI, enabling systems with for example multiple DAC/speaker drivers on a single link, contributed by Benoit Cousson based on work from Misael Lopez Cruz - Support for byte controls larger than 256 bytes based on the use of TLVs contributed by Omair Mohammed Abdullah - More componentisation work from Lars-Peter Clausen - The remainder of the conversions of CODEC drivers to params_width() by Mark Brown - Drivers for Cirrus Logic CS4265, Freescale i.MX ASRC blocks, Realtek RT286 and RT5670, Rockchip RK3xxx I2S controllers and Texas Instruments TAS2552 - Lots of updates and fixes, especially to the DaVinci, Intel, Freescale, Realtek, and rcar drivers" * tag 'sound-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (402 commits) ALSA: usb-audio: Whitespace cleanups for sound/usb/midi.* ALSA: usb-audio: Respond to suspend and resume callbacks for MIDI input sound/oss/pss: Remove typedefs pss_mixerdata and pss_confdata sound/oss/opl3: Remove typedef opl_devinfo ALSA: fireworks: fix specifiers in format strings for propper output ASoC: imx-audmux: Use uintptr_t for port numbers ASoC: davinci: Enable menuconfig entry for McASP ASoC: fsl_asrc: Don't access members of config before checking it ASoC: fsl_sarc_dma: Check pair before using it ASoC: adau1977: Fix truncation warning on 64 bit architectures ALSA: virtuoso: add Xonar Essence STX II support ALSA: riptide: fix %d confusingly prefixed with 0x in format strings ALSA: fireworks: fix %d confusingly prefixed with 0x in format strings ALSA: hda - add codec ID for Braswell display audio codec ALSA: hda - add PCI IDs for Intel Braswell ALSA: usb-audio: Adjust Gamecom 780 volume level ALSA: usb-audio: improve dmesg source grepability ASoC: rt5670: Fix duplicate const warnings ASoC: rt5670: Staticise non-exported symbols ASoC: Intel: update stream only on stream IPC msgs ...
2014-08-06Merge tag 'hsi-for-3.17' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi Pull HSI changes from Sebastian Reichel: "Misc fixes in SSI related drivers" * tag 'hsi-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi: HSI: omap_ssi: Fix return value check in ssi_debug_add_ctrl() HSI: omap_ssi_port: Fix return value check in ssi_debug_add_port() HSI: ssi_protocol: Fix sparse non static symbol warning drivers/hsi/controllers/omap_ssi{,_port}.c: fix failure checks
2014-08-06Merge tag 'for-v3.17' of git://git.infradead.org/battery-2.6Linus Torvalds
Pull power supply changes from Sebastian Reichel: - Added iPaq h3xxx battery driver - Added Broadcom STB reset driver - DT support for rx51-battery - misc. fixes * tag 'for-v3.17' of git://git.infradead.org/battery-2.6: ipaq_micro_battery: fix sparse non static symbol warning power: add driver for battery reading on iPaq h3xxx power: twl4030_charger: detect battery presence prior to enabling charger power: reset: Add reboot driver for brcmstb power_supply: Fix sparse non static symbol warning power_supply: Add inlmt,iterm, min/max temp props charger: tps65090: Allow charger module to be used when no irq power/reset: Fix GPL v2 license string typo power: poweroff: gpio: convert to use descriptors bq27000: report missing device better. bq27x00_battery: Introduce the use of the managed version of kzalloc Documentation: DT: Document rx51-battery binding rx51_battery: convert to iio consumer bq2415x_charger: Fix Atomic Sleep Bug
2014-08-07powerpc/eeh: Export eeh_iommu_group_to_pe()Gavin Shan
The function is used by VFIO driver, which might be built as a dynamic module. So it should be exported. Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-08-06netlink: hold nl_sock_hash_lock during diag dumpThomas Graf
Although RCU protection would be possible during diag dump, doing so allows for concurrent table mutations which can render the in-table offset between individual Netlink messages invalid and thus cause legitimate sockets to be skipped in the dump. Since the diag dump is relatively low volume and consistency is more important than performance, the table mutex is held during dump. Reported-by: Andrey Wagin <avagin@gmail.com> Signed-off-by: Thomas Graf <tgraf@suug.ch> Fixes: e341694e3eb57fc ("netlink: Convert netlink_lookup() to use RCU protected hash table") Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-06checkpatch: update $declaration_macros, add uninitialized_varJoe Perches
Using uninitialized_var reports a false positive for "Missing blank line after declarations". Fix it by adding uninitialized_var to the $declaration_macros exceptions list. Move the macro list after $Type is declared. Add optional prefixes to DECLARE_<FOO> and DEFINE_<BAR> macro declarations to allow forms like: MLX4_DECLARE_DOORBELL_LOCK Signed-off-by: Joe Perches <joe@perches.com> Reported-by: Dotan Barak <dotanb@mellanox.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: warn on missing spaces in broken up quotedDan Carpenter
Checkpatch already complains when people break up quoted strings but it's still pretty common. One mistake that people often make is they leave out the space character between the two strings. This check adds around 450 new warnings and has a low rate of false positives. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: Andy Whitcroft <apw@canonical.com> Acked-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: fix false positives for --strict "space after cast" testJoe Perches
Commit 89da401f6cff ("checkpatch: improve "no space after cast" test") in -next improved the cast test for non pointer types, but also introduced false positives for some types of static inlines. Add a test for an open brace to the exclusions to avoid these false positives. Signed-off-by: Joe Perches <joe@perches.com> Reported-by: Hartley Sweeten <HartleyS@visionengravers.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: fix false positive MISSING_BREAK warnings with --fileJoe Perches
Using --file mode can give false positives with MISSING_BREAK fall-through warnings on simple but long multiple consecutive case statements. Look for all lines before a case statement for a switch or a statement when using --file mode. Fix a misspelling of preceded while there. Signed-off-by: Joe Perches <joe@perches.com> Reported-by: Lee Jones <lee.jones@linaro.org> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: add test for native c90 types in unusual orderJoe Perches
c90 section "6.7.2 Type Specifiers" says: "type specifiers may occur in any order" That means that: short int is the same as int short unsigned short int is the same as int unsigned short etc... checkpatch currently parses only a subset of these allowed types. For instance: "unsigned short" and "signed short" are found by checkpatch as a specific type, but none of the or "int short" or "int signed short" variants are found. Add another table for the "kernel style misordered" variants. Add this misordered table to the findable types. Warn when the misordered style is used. This improves the "Missing a blank line after declarations" test as it depends on the correct parsing of the $Declare variable which looks for "$Type $Ident;" (ie: declarations like "int foo;"). Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Andy Whitcroft <apw@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: add signed generic typesJoe Perches
Current generic types are unsigned or unspecified. Add signed to the types. Reorder the types to find the longest match first. Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Andy Whitcroft <apw@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: add short int to c variable typesJoe Perches
short int is one of the 6.7.2 c90 types. Find it appropriately. This fixes a defect in checkpatch where it suggests that a line break after declaration is required using an input like: int foo; short int bar; Without this change, it warns on the short int line. Signed-off-by: Joe Perches <joe@perches.com> Reported-by: Hartley Sweeten <HartleyS@visionengravers.com> Acked-by: Andy Whitcroft <apw@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: add for_each tests to indentation and brace testsJoe Perches
All the various for_each loop macros were not tested for trailing brace on the following lines and for bad indentation. Add them. Signed-off-by: Joe Perches <joe@perches.com> Reported-by: Greg KH <gregkh@linuxfoundation.org> Cc: Andy Whitcroft <apw@canonical.com Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: fix brace style misuses of else and whileJoe Perches
Add --fix corrections for ELSE_AFTER_BRACE and WHILE_AFTER_BRACE misuses. if (x) { ... } else { ... } is corrected to if (x) { ... } else { ... } and do { ... } while (x); is corrected to do { ... } while (x); Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: add --fix option for a couple OPEN_BRACE misusesJoe Perches
Style misuses of these types are corrected: typedef struct foo { int bar; }; int foo(int bar) { return bar+1; } int foo(int bar) { return bar+1; } Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: use the correct indentation for which()Joe Perches
I copied the which subroutine from get_maintainer.pl. Unfortunately, get_maintainer uses a 4 space indentation so use the proper tab indentation instead. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: add fix_insert_line and fix_delete_line helpersJoe Perches
Neaten the uses of patch/file line insertions or deletions. Hide the mechanism used. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: add ability to insert and delete lines to patch/fileJoe Perches
This can be valuable to insert or delete blank lines as well as fix misplaced brace or else uses. Store indexes of lines to be added/deleted and the new lines. When creating the --fix file, insert or delete the appropriate lines and update the patch range information. Signed-off-by: Joe Perches <joe@perches.com> Cc: Andy Whitcroft <apw@canonical.com> Cc: Dan Carpenter <dan.carpenter@oracle.com> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: add an index variable for fixed linesJoe Perches
Make the fix code a bit easier to read. This should also start to allow an easier mechanism to insert/delete lines eventually too. Signed-off-by: Joe Perches <joe@perches.com> Cc: Andy Whitcroft <apw@canonical.com> Cc: Dan Carpenter <dan.carpenter@oracle.com> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: warn on break after goto or return with same tab indentationJoe Perches
Using break; after a goto or return is unnecessary so emit a warning when the break is at the same indent level. So this emits a warning on: switch (foo) { case 1: goto err; break; } but not on: switch (foo) { case 1: if (bar()) goto err; break; } Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: emit a warning on file add/move/deleteJoe Perches
Whenever files are added, moved, or deleted, the MAINTAINERS file patterns can be out of sync or outdated. To try to keep MAINTAINERS more up-to-date, add a one-time warning whenever a patch does any of those. Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Andy Whitcroft <apw@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: add test for commit id formatting style in commit logJoe Perches
Commit logs have various forms of commit id references. Try to standardize on a 12 character long lower case commit id along with a description of parentheses and the quoted subject line. ie: commit 0123456789ab ("commit description") If git and a git tree exists, look up the commit id and emit the appropriate line as part of the message. Signed-off-by: Joe Perches <joe@perches.com> Requested-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: emit fewer kmalloc_array/kcalloc conversion warningsJoe Perches
Avoid matching allocs that appear to be known small multiplications of a sizeof with a constant because gcc as of 4.8 cannot optimize the code in a calloc() exactly the same way as an alloc(). Look for numeric constants or what appear to be upper case only macro #defines. Signed-off-by: Joe Perches <joe@perches.com> Reported-by: Theodore Ts'o <tytso@mit.edu> Original-patch-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: improve "no space after cast" testJoe Perches
This --strict test previously worked only for what appeared to be cast to pointer types. Make it work for all casts. Also, there's no reason to show the previous line for this type of message, so don't. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: allow multiple const * typesJoe Perches
checkpatch's $Type variable does not match declarations of multiple const * types. This can produce false positives for things like: $ ./scripts/checkpatch.pl -f drivers/staging/comedi/comedidev.h WARNING: Missing a blank line after declarations #60: FILE: drivers/staging/comedi/comedidev.h:60: + const struct comedi_lrange *range_table; + const struct comedi_lrange *const *range_table_list; Fix the $Type variable to support matching multiple "* const" uses. Signed-off-by: Joe Perches <joe@perches.com> Reported-by: Hartley Sweeten <HartleyS@visionengravers.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: warn on unnecessary parentheses around references of foo->barJoe Perches
Parentheses around &(foo->bar) and *(foo->bar) are unnecessary. Emit a --strict only message on these uses. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: quiet Kconfig help message checkingJoe Perches
Editing Kconfig dependencies can emit unnecessary messages about missing or too short help entries. Only emit the message when adding help sections to Kconfig files. Signed-off-by: Joe Perches <joe@perches.com> Reported-by: Jean Delvare <jdelvare@suse.de> Tested-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: change blank line after declaration type to "LINE_SPACING"Joe Perches
Make it consistent with the other missing or multiple blank line tests. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: add a multiple blank lines testJoe Perches
Multiple consecutive blank lines waste screen space. Emit a --strict only message with these blank lines. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: add test for blank lines after function/struct/union/enumJoe Perches
Add a --strict test asking for a blank line after function/struct/union/enum declarations. Allow exceptions for several attributes and macro uses. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch.pl: also suggest 'else if' when if follows braceRasmus Villemoes
This might help a kernel hacker think twice before blindly adding a newline. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Acked-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: ignore email headers betterJoe Perches
There are some patches created by git format-patch that when scanned by checkpatch report errors on lines like To: address.tld This is a checkpatch false positive. Improve the logic a bit to ignore folded email headers to avoid emitting these messages. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: fix function pointers in blank line needed after declarations testJoe Perches
Add a function pointer declaration check to the test for blank line needed after declarations. Signed-off-by: Joe Perches <joe@perches.com> Reported-by: Bruce W Allan <bruce.w.allan@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: fix complex macro false positive for escaped constant charJoe Perches
A single escaped constant char is not a complex macro. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: warn on unnecessary else after return or breakJoe Perches
Using an else following a break or return can unnecessarily indent code blocks. ie: for (i = 0; i < 100; i++) { int foo = bar(); if (foo < 1) break; else usleep(1); } is generally better written as: for (i = 0; i < 100; i++) { int foo = bar(); if (foo < 1) break; usleep(1); } Warn when a bare else statement is preceded by a break or return indented 1 tab more than the else. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06checkpatch: attempt to find unnecessary 'out of memory' messagesJoe Perches
Logging messages that show some type of "out of memory" error are generally unnecessary as there is a generic message and a stack dump done by the memory subsystem. These messages generally increase kernel size without much added value. Emit a warning on these types of messages. This test looks for any inserted message function, then looks at the previous line for an "if (!foo)" or "if (foo == NULL)" test and then looks at the preceding statement for an allocation function like "foo = kmalloc()" ie: this code matches: foo = kmalloc(); if (foo == NULL) { printk("Out of memory\n"); return -ENOMEM; } This test is very crude and incomplete. This test can miss quite a lot of of OOM messages that do not have this specific form. ie: this code does not match: foo = kmalloc(); if (!foo) { rtn = -ENOMEM; printk("Out of memory!\n"); goto out; } This test could also be a false positive when the logging message itself does not specify anything about memory, but I did not find any false positives in my limited testing. spatch could be a better solution but correctness seems non-trivial for that tool too. Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06lib: bitmap: add missing mask in bitmap_andnotRasmus Villemoes
Apparently, bitmap_andnot is supposed to return whether the new bitmap is empty. But it didn't take potential garbage bits in the last word into account. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06lib: bitmap: add missing mask in bitmap_andRasmus Villemoes
Apparently, bitmap_and is supposed to return whether the new bitmap is empty. But it didn't take potential garbage bits in the last word into account. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06lib: bitmap: add missing mask in bitmap_shift_rightRasmus Villemoes
There is no guarantee that *src does not contain garbage bits outside the lower nbits, so we need to mask it before the shift-and-assign. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06lib: bitmap: micro-optimize bitmap_allocate_regionRasmus Villemoes
__reg_op(..., REG_OP_ALLOC) always returns 0, so we might as well use that and save an instruction. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06lib: bitmap: change parameter of bitmap_*_region to unsignedRasmus Villemoes
Changing the pos parameter of __reg_op to unsigned allows the compiler to generate slightly smaller and simpler code. Also update its callers bitmap_*_region to receive and pass unsigned int. The return types of bitmap_find_free_region and bitmap_allocate_region are still int to allow a negative error code to be returned. An int is certainly capable of representing any realistic return value. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06lib: bitmap: fix typo in kerneldoc for bitmap_pos_to_ordRasmus Villemoes
A few lines above, it was stated that positions for non-set bits are mapped to -1, which is obviously also what the code does. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06lib: bitmap: simplify bitmap_parselistRasmus Villemoes
We want len to be the index of the first '\n', or the length of the string if there is no newline. This is a good example of the usefulness of strchrnul(). Use that instead, thus eliminating a branch and a call to strlen(). Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06lib: bitmap: make the start index of bitmap_clear unsignedRasmus Villemoes
The compiler can generate slightly smaller and simpler code when it knows that "start" is non-negative. Also, use the names "start" and "len" for the two parameters for consistency with bitmap_set. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06lib: bitmap: make the start index of bitmap_set unsignedRasmus Villemoes
The compiler can generate slightly smaller and simpler code when it knows that "start" is non-negative. Also, use the names "start" and "len" for the two parameters in both header file and implementation, instead of the previous mix. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06lib: bitmap: make nbits parameter of bitmap_weight unsignedRasmus Villemoes
The compiler can generate slightly smaller and simpler code when it knows that "nbits" is non-negative. Since no-one passes a negative bit-count, this shouldn't affect the semantics. I didn't change the return type, since that might change the semantics of some expression containing a call to bitmap_weight(). Certainly an int is capable of holding the result. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06lib: bitmap: make nbits parameter of bitmap_subset unsignedRasmus Villemoes
The compiler can generate slightly smaller and simpler code when it knows that "nbits" is non-negative. Since no-one passes a negative bit-count, this shouldn't affect the semantics. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06lib: bitmap: make nbits parameter of bitmap_intersects unsignedRasmus Villemoes
The compiler can generate slightly smaller and simpler code when it knows that "nbits" is non-negative. Since no-one passes a negative bit-count, this shouldn't affect the semantics. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06lib: bitmap: make nbits parameter of bitmap_{and,or,xor,andnot} unsignedRasmus Villemoes
This change is only for consistency with the changes to the other bitmap_* functions; it doesn't change the size of the generated code: inside BITS_TO_LONGS there is a sizeof(long), which causes bits to be interpreted as unsigned anyway. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-06lib: bitmap: remove unnecessary mask from bitmap_complementRasmus Villemoes
Since the extra bits are "don't care", there is no reason to mask the last word to the used bits when complementing. This shaves off yet a few bytes. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>