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Subject[QUESTION] init/main.c

At function calibrate_delay(void) in init/main.c,
I dont understand this code:

<<EOF
/* wait for "start of" clock tick */
ticks = jiffies;
while (ticks == jiffies)
/* nothing */;
/* Go .. */

ticks = jiffies;
EOF

ticks = jiffies; while (ticks == jiffies); ticks = jiffies; ?

Thanks in advanced,
-Thiago Rondon

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