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authorBjorn Helgaas <bjorn.helgaas@hp.com>2008-04-28 16:34:21 -0600
committerLen Brown <len.brown@intel.com>2008-04-29 03:22:25 -0400
commitdb9eaeab3e7ab72d773820820f1ba33960ad24c4 (patch)
tree230be670c84af99ab617d89ae89a1f115d766e0f /drivers/pnp
parent470feb113a23de365b6051efde0d69de86d9d2f8 (diff)
PNP: check for conflicts with all resources, not just earlier ones
This patch removes a use of "idx" in pnp_check_port() and similar functions, in preparation for replacing idx with a pointer to the resource itself. I split this out because it changes the behavior slightly: we used to check for conflicts only with earlier resources, e.g., we checked resource 2 against resources 0 and 1 but not against 3, 4, etc. Now we will check against all resources except 2. Since resources are assigned in ascending order, the old behavior was probably safe, but I don't like to depend on that ordering. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Acked-By: Rene Herman <rene.herman@gmail.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/pnp')
-rw-r--r--drivers/pnp/resource.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/pnp/resource.c b/drivers/pnp/resource.c
index f89945ebd8b6..eab16e5520ae 100644
--- a/drivers/pnp/resource.c
+++ b/drivers/pnp/resource.c
@@ -270,9 +270,9 @@ int pnp_check_port(struct pnp_dev *dev, int idx)
}
/* check for internal conflicts */
- for (i = 0; i < PNP_MAX_PORT && i != idx; i++) {
+ for (i = 0; i < PNP_MAX_PORT; i++) {
tres = &dev->res.port_resource[i];
- if (tres->flags & IORESOURCE_IO) {
+ if (tres != res && tres->flags & IORESOURCE_IO) {
tport = &tres->start;
tend = &tres->end;
if (ranged_conflict(port, end, tport, tend))
@@ -331,9 +331,9 @@ int pnp_check_mem(struct pnp_dev *dev, int idx)
}
/* check for internal conflicts */
- for (i = 0; i < PNP_MAX_MEM && i != idx; i++) {
+ for (i = 0; i < PNP_MAX_MEM; i++) {
tres = &dev->res.mem_resource[i];
- if (tres->flags & IORESOURCE_MEM) {
+ if (tres != res && tres->flags & IORESOURCE_MEM) {
taddr = &tres->start;
tend = &tres->end;
if (ranged_conflict(addr, end, taddr, tend))
@@ -391,9 +391,9 @@ int pnp_check_irq(struct pnp_dev *dev, int idx)
}
/* check for internal conflicts */
- for (i = 0; i < PNP_MAX_IRQ && i != idx; i++) {
+ for (i = 0; i < PNP_MAX_IRQ; i++) {
tres = &dev->res.irq_resource[i];
- if (tres->flags & IORESOURCE_IRQ) {
+ if (tres != res && tres->flags & IORESOURCE_IRQ) {
if (tres->start == *irq)
return 0;
}
@@ -465,9 +465,9 @@ int pnp_check_dma(struct pnp_dev *dev, int idx)
}
/* check for internal conflicts */
- for (i = 0; i < PNP_MAX_DMA && i != idx; i++) {
+ for (i = 0; i < PNP_MAX_DMA; i++) {
tres = &dev->res.dma_resource[i];
- if (tres->flags & IORESOURCE_DMA) {
+ if (tres != res && tres->flags & IORESOURCE_DMA) {
if (tres->start == *dma)
return 0;
}

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