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Revision 0f8c0234f275c8198cbb68f16e035fa46254e372 authored by Randy Dunlap on 15 November 2007, 00:58:45 UTC, committed by Linus Torvalds on 15 November 2007, 02:45:37 UTC 
chipsfb: uses/depends on PCI
 
chipsfb uses PCI interfaces and should depend on PCI.

  CC      drivers/video/chipsfb.o
drivers/video/chipsfb.c: In function 'chipsfb_pci_init':
drivers/video/chipsfb.c:378: error: implicit declaration of function 'pci_request_region'
drivers/video/chipsfb.c:435: error: implicit declaration of function 'pci_release_region'
make[2]: *** [drivers/video/chipsfb.o] Error 1
make[1]: *** [drivers/video] Error 2
make: *** [drivers] Error 2

!CONFIG_PCI causes the build to fail.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 108b4c3
Raw File
int_sqrt.c 

#include <linux/kernel.h>
#include <linux/module.h>

/**
 * int_sqrt - rough approximation to sqrt
 * @x: integer of which to calculate the sqrt
 *
 * A very rough approximation to the sqrt() function.
 */
unsigned long int_sqrt(unsigned long x)
{
	unsigned long op, res, one;

	op = x;
	res = 0;

	one = 1UL << (BITS_PER_LONG - 2);
	while (one > op)
		one >>= 2;

	while (one != 0) {
		if (op >= res + one) {
			op = op - (res + one);
			res = res +  2 * one;
		}
		res /= 2;
		one /= 4;
	}
	return res;
}
EXPORT_SYMBOL(int_sqrt);
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