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Use dcr_host_t.base in dcr_unmap()

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With the base stored in dcr_host_t, there's no need for callers to pass
the dcr_n into dcr_unmap(). In fact this removes the possibility of them
passing the incorrect value, which would then be iounmap()'ed.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Michael Ellerman
2007-10-15 19:34:37 +10:00
committed by Jeff Garzik
parent 83f34df4e7
commit cdbd3865ac
4 changed files with 5 additions and 5 deletions
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4
arch/powerpc/sysdev/dcr.c
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@@ -126,13 +126,13 @@ dcr_host_t dcr_map(struct device_node *dev, unsigned int dcr_n,
}
EXPORT_SYMBOL_GPL(dcr_map);
void dcr_unmap(dcr_host_t host, unsigned int dcr_n, unsigned int dcr_c)
void dcr_unmap(dcr_host_t host, unsigned int dcr_c)
{
dcr_host_t h = host;
if (h.token == NULL)
return;
h.token += dcr_n * h.stride;
h.token += host.base * h.stride;
iounmap(h.token);
h.token = NULL;
}