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[PATCH] w1: real fix for big endian machines.

Real fix for big endian machines - crc must be calculated
using little endian byte order.

Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
johnpol@2ka.mipt.ru 20 年之前
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共有 1 个文件被更改,包括 5 次插入4 次删除
  1. 5 4
      drivers/w1/w1.c

+ 5 - 4
drivers/w1/w1.c

@@ -522,10 +522,11 @@ void w1_slave_found(unsigned long data, u64 rn)
 		slave_count++;
 	}
 
-		if (slave_count == dev->slave_count && rn ) {
-			tmp = cpu_to_le64(rn);
-			if(((rn >> 56) & 0xff) == w1_calc_crc8((u8 *)&tmp, 7))
-				w1_attach_slave_device(dev, (struct w1_reg_num *) &rn);
+	rn = cpu_to_le64(rn);
+
+	if (slave_count == dev->slave_count &&
+		rn && ((le64_to_cpu(rn) >> 56) & 0xff) == w1_calc_crc8((u8 *)&rn, 7)) {
+		w1_attach_slave_device(dev, tmp);
 	}
 			
 	atomic_dec(&dev->refcnt);