Commit 792a00c1 authored by Fabio M. De Francesco's avatar Fabio M. De Francesco Committed by Greg Kroah-Hartman
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staging: r8188eu: Remove no more used functions and variables 



Remove the functions and variables from rtw_security.c that are no more
necessary since the patch that replaces getcrc32() with crc32_le().

Signed-off-by: default avatarFabio M. De Francesco <fmdefrancesco@gmail.com>
Link: https://lore.kernel.org/r/20210730103716.27210-3-fmdefrancesco@gmail.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent f52cc32d

drivers/staging/r8188eu/core/rtw_security.c

+0 −37
Original line number Diff line number Diff line
@@ -74,43 +74,6 @@ static void arcfour_encrypt(struct arc4context *parc4ctx, u8 *dest, u8 *src, u32 


}



static int bcrc32initialized;

static u32 crc32_table[256];



static u8 crc32_reverseBit(u8 data)

{

	return (u8)((data<<7)&0x80) | ((data<<5)&0x40) | ((data<<3)&0x20) |

		   ((data<<1)&0x10) | ((data>>1)&0x08) | ((data>>3)&0x04) |

		   ((data>>5)&0x02) | ((data>>7)&0x01);

}



static void crc32_init(void)

{

	if (bcrc32initialized == 1) {

		return;

	} else {

		int i, j;

		u32 c;

		u8 *p = (u8 *)&c, *p1;

		u8 k;



		c = 0x12340000;



		for (i = 0; i < 256; ++i) {

			k = crc32_reverseBit((u8)i);

			for (c = ((u32)k) << 24, j = 8; j > 0; --j)

				c = c & 0x80000000 ? (c << 1) ^ CRC32_POLY : (c << 1);

			p1 = (u8 *)&crc32_table[i];



			p1[0] = crc32_reverseBit(p[3]);

			p1[1] = crc32_reverseBit(p[2]);

			p1[2] = crc32_reverseBit(p[1]);

			p1[3] = crc32_reverseBit(p[0]);

		}

		bcrc32initialized = 1;

	}

}



/*

	Need to consider the fragment  situation

*/