Revision e543c8a92fb6eca8dd554561fa55bba5f2a90d09 authored by Linus Torvalds on 05 June 2017, 22:31:14 UTC, committed by Linus Torvalds on 05 June 2017, 22:31:14 UTC
Pull libata fixes from Tejun Heo: - Revert of sata_mv devm_ioremap_resource() conversion. It made init fail if there are overlapping resources which led to detection failures on some setups. - A workaround for an Acer laptop which sometimes reports corrupt port map. - Other non-critical fixes. * 'for-4.12-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: libata: fix error checking in in ata_parse_force_one() Revert "ata: sata_mv: Convert to devm_ioremap_resource()" ata: libahci: properly propagate return value of platform_get_irq() ata: sata_rcar: Handle return value of clk_prepare_enable ahci: Acer SA5-271 SSD Not Detected Fix
lcm.c
#include <linux/compiler.h>
#include <linux/gcd.h>
#include <linux/export.h>
#include <linux/lcm.h>
/* Lowest common multiple */
unsigned long lcm(unsigned long a, unsigned long b)
{
if (a && b)
return (a / gcd(a, b)) * b;
else
return 0;
}
EXPORT_SYMBOL_GPL(lcm);
unsigned long lcm_not_zero(unsigned long a, unsigned long b)
{
unsigned long l = lcm(a, b);
if (l)
return l;
return (b ? : a);
}
EXPORT_SYMBOL_GPL(lcm_not_zero);
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