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powerpc/mpic: Assume a device-node was passed in mpic_alloc()

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All of the existing callers of mpic_alloc() pass in a non-NULL
device-node pointer, so the checks for a NULL device-node may be
removed.

Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Kyle Moffett 2011-12-02 06:28:00 +00:00 committed by Benjamin Herrenschmidt
parent 8bf4156896
commit 5bdb6f2e58
1 changed files with 21 additions and 29 deletions
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50
arch/powerpc/sysdev/mpic.c
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@ -1137,19 +1137,17 @@ struct mpic * __init mpic_alloc(struct device_node *node,
unsigned int irq_count,
const char *name)
{
struct mpic *mpic;
u32 greg_feature;
const char *vers;
int i;
int intvec_top;
int i, psize, intvec_top;
struct mpic *mpic;
u32 greg_feature;
const char *vers;
const u32 *psrc;
/*
* If no phyiscal address was specified then all of the phyiscal
* addressing parameters must come from the device-tree.
*/
/* This code assumes that a non-NULL device node is passed in */
BUG_ON(!node);
/* Pick the physical address from the device tree if unspecified */
if (!phys_addr) {
BUG_ON(!node);
/* Check if it is DCR-based */
if (of_get_property(node, "dcr-reg", NULL)) {
flags |= MPIC_USES_DCR;
@ -1211,28 +1209,22 @@ struct mpic * __init mpic_alloc(struct device_node *node,
mpic->spurious_vec = intvec_top;
/* Check for "big-endian" in device-tree */
if (node && of_get_property(node, "big-endian", NULL) != NULL)
if (of_get_property(node, "big-endian", NULL) != NULL)
mpic->flags |= MPIC_BIG_ENDIAN;
if (node && of_device_is_compatible(node, "fsl,mpic"))
if (of_device_is_compatible(node, "fsl,mpic"))
mpic->flags |= MPIC_FSL;
/* Look for protected sources */
if (node) {
int psize;
unsigned int bits, mapsize;
const u32 *psrc =
of_get_property(node, "protected-sources", &psize);
if (psrc) {
psize /= 4;
bits = intvec_top + 1;
mapsize = BITS_TO_LONGS(bits) * sizeof(unsigned long);
mpic->protected = kzalloc(mapsize, GFP_KERNEL);
BUG_ON(mpic->protected == NULL);
for (i = 0; i < psize; i++) {
if (psrc[i] > intvec_top)
continue;
__set_bit(psrc[i], mpic->protected);
}
psrc = of_get_property(node, "protected-sources", &psize);
if (psrc) {
/* Allocate a bitmap with one bit per interrupt */
unsigned int mapsize = BITS_TO_LONGS(intvec_top + 1);
mpic->protected = kzalloc(mapsize*sizeof(long), GFP_KERNEL);
BUG_ON(mpic->protected == NULL);
for (i = 0; i < psize/sizeof(u32); i++) {
if (psrc[i] > intvec_top)
continue;
__set_bit(psrc[i], mpic->protected);
}
}