/* * CRC32 using the polynomial from IEEE-802.3 * * Authors: Lasse Collin * Igor Pavlov * * This file has been put into the public domain. * You can do whatever you want with this file. */ /* * This is not the fastest implementation, but it is pretty compact. * The fastest versions of xz_crc32() on modern CPUs without hardware * accelerated CRC instruction are 3-5 times as fast as this version, * but they are bigger and use more memory for the lookup table. */ #include "xz_private.h" /* * STATIC_RW_DATA is used in the pre-boot environment on some architectures. * See for details. */ #ifndef STATIC_RW_DATA # define STATIC_RW_DATA static #endif STATIC_RW_DATA uint32_t xz_crc32_table[256]; XZ_EXTERN void xz_crc32_init(void) { const uint32_t poly = 0xEDB88320; uint32_t i; uint32_t j; uint32_t r; for (i = 0; i < 256; ++i) { r = i; for (j = 0; j < 8; ++j) r = (r >> 1) ^ (poly & ~((r & 1) - 1)); xz_crc32_table[i] = r; } return; } XZ_EXTERN uint32_t xz_crc32(const uint8_t *buf, size_t size, uint32_t crc) { crc = ~crc; while (size != 0) { crc = xz_crc32_table[*buf++ ^ (crc & 0xFF)] ^ (crc >> 8); --size; } return ~crc; } on value='packet-loop-back'>packet-loop-back net-next plumbingsTobias Klauser
summaryrefslogtreecommitdiff
path: root/include/net/irda
diff options
context:
space:
mode:
authorLaxman Dewangan <ldewangan@nvidia.com>2016-03-13 18:46:57 +0530
committerMark Brown <broonie@kernel.org>2016-05-30 16:29:34 +0100
commitf5a6d3516362f85d6a07e930bc10cd4b59f306c7 (patch)
tree7c9d79b686aedd9a8e1836bfd9e81cc2efcf7a8f /include/net/irda
parent1a695a905c18548062509178b98bc91e67510864 (diff)
regulator: fixed: Remove workaround to handle of_get_named_gpio() return
The GPIO interface of_get_named_gpio() has implemented the proper error returns even EPROBE_DEFER and hence caller need not to implement any workaround for translating the returned error. Remove the workaround implemented to handle the return of of_get_named_gpio(). Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/net/irda')