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author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-08-18 16:48:07 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-08-18 16:48:07 -0700 |
commit | 08b5fa819970c318e58ab638f497633c25971813 (patch) | |
tree | a08793025bd43f5efa99ca67f71ea5a50687b41c /lib/bitmap.c | |
parent | 7f02e1ce4a13edf295fcedbc663a8ca69bc1ff6e (diff) | |
parent | 13fe7056bebb4015c6231a07a1be4d3aebbfe979 (diff) | |
download | linux-08b5fa819970c318e58ab638f497633c25971813.tar.gz |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov: - a new driver for Rohm BU21029 touch controller - new bitmap APIs: bitmap_alloc, bitmap_zalloc and bitmap_free - updates to Atmel, eeti. pxrc and iforce drivers - assorted driver cleanups and fixes. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (57 commits) MAINTAINERS: Add PhoenixRC Flight Controller Adapter Input: do not use WARN() in input_alloc_absinfo() Input: mark expected switch fall-throughs Input: raydium_i2c_ts - use true and false for boolean values Input: evdev - switch to bitmap API Input: gpio-keys - switch to bitmap_zalloc() Input: elan_i2c_smbus - cast sizeof to int for comparison bitmap: Add bitmap_alloc(), bitmap_zalloc() and bitmap_free() md: Avoid namespace collision with bitmap API dm: Avoid namespace collision with bitmap API Input: pm8941-pwrkey - add resin entry Input: pm8941-pwrkey - abstract register offsets and event code Input: iforce - reorganize joystick configuration lists Input: atmel_mxt_ts - move completion to after config crc is updated Input: atmel_mxt_ts - don't report zero pressure from T9 Input: atmel_mxt_ts - zero terminate config firmware file Input: atmel_mxt_ts - refactor config update code to add context struct Input: atmel_mxt_ts - config CRC may start at T71 Input: atmel_mxt_ts - remove unnecessary debug on ENOMEM Input: atmel_mxt_ts - remove duplicate setup of ABS_MT_PRESSURE ...
Diffstat (limited to 'lib/bitmap.c')
-rw-r--r-- | lib/bitmap.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/lib/bitmap.c b/lib/bitmap.c index 58f9750e49c6..730969c681cb 100644 --- a/lib/bitmap.c +++ b/lib/bitmap.c @@ -13,6 +13,7 @@ #include <linux/bitops.h> #include <linux/bug.h> #include <linux/kernel.h> +#include <linux/slab.h> #include <linux/string.h> #include <linux/uaccess.h> @@ -1125,6 +1126,25 @@ void bitmap_copy_le(unsigned long *dst, const unsigned long *src, unsigned int n EXPORT_SYMBOL(bitmap_copy_le); #endif +unsigned long *bitmap_alloc(unsigned int nbits, gfp_t flags) +{ + return kmalloc_array(BITS_TO_LONGS(nbits), sizeof(unsigned long), + flags); +} +EXPORT_SYMBOL(bitmap_alloc); + +unsigned long *bitmap_zalloc(unsigned int nbits, gfp_t flags) +{ + return bitmap_alloc(nbits, flags | __GFP_ZERO); +} +EXPORT_SYMBOL(bitmap_zalloc); + +void bitmap_free(const unsigned long *bitmap) +{ + kfree(bitmap); +} +EXPORT_SYMBOL(bitmap_free); + #if BITS_PER_LONG == 64 /** * bitmap_from_arr32 - copy the contents of u32 array of bits to bitmap |