diff options
| -rw-r--r-- | drivers/w1/w1_ds2433.c | 6 | ||||
| -rw-r--r-- | include/linux/crc16.h | 16 |
2 files changed, 6 insertions, 16 deletions
diff --git a/drivers/w1/w1_ds2433.c b/drivers/w1/w1_ds2433.c index b7c24b3..279e0e0 100644 --- a/drivers/w1/w1_ds2433.c +++ b/drivers/w1/w1_ds2433.c @@ -15,6 +15,10 @@ #include <linux/delay.h> #ifdef CONFIG_W1_F23_CRC #include <linux/crc16.h> + +#define CRC16_INIT 0 +#define CRC16_VALID 0xb001 + #endif #include "w1.h" @@ -214,7 +218,7 @@ static ssize_t w1_f23_write_bin(struct kobject *kobj, char *buf, loff_t off, #ifdef CONFIG_W1_F23_CRC /* can only write full blocks in cached mode */ if ((off & W1_PAGE_MASK) || (count & W1_PAGE_MASK)) { - dev_err(&sl->dev, "invalid offset/count off=%d cnt=%d\n", + dev_err(&sl->dev, "invalid offset/count off=%d cnt=%zd\n", (int)off, count); return -EINVAL; } diff --git a/include/linux/crc16.h b/include/linux/crc16.h index bdedf82..9443c08 100644 --- a/include/linux/crc16.h +++ b/include/linux/crc16.h @@ -1,22 +1,11 @@ /* * crc16.h - CRC-16 routine * - * Implements the standard CRC-16, as used with 1-wire devices: + * Implements the standard CRC-16: * Width 16 * Poly 0x8005 (x^16 + x^15 + x^2 + 1) * Init 0 * - * For 1-wire devices, the CRC is stored inverted, LSB-first - * - * Example buffer with the CRC attached: - * 31 32 33 34 35 36 37 38 39 C2 44 - * - * The CRC over a buffer with the CRC attached is 0xB001. - * So, if (crc16(0, buf, size) == 0xB001) then the buffer is valid. - * - * Refer to "Application Note 937: Book of iButton Standards" for details. - * http://www.maxim-ic.com/appnotes.cfm/appnote_number/937 - * * Copyright (c) 2005 Ben Gardner <bgardner@wabtec.com> * * This source code is licensed under the GNU General Public License, @@ -28,9 +17,6 @@ #include <linux/types.h> -#define CRC16_INIT 0 -#define CRC16_VALID 0xb001 - extern u16 const crc16_table[256]; extern u16 crc16(u16 crc, const u8 *buffer, size_t len); |