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authorBjorn Helgaas <bjorn.helgaas@hp.com>2008-06-27 16:57:00 -0600
committerAndi Kleen <andi@basil.nowhere.org>2008-07-16 23:27:06 +0200
commitf61ed7e32d2d6a0a8c3c101da513ccedd542e14d (patch)
tree6a397ad9c74e3359f6c7f40857ca424ca701b027 /drivers/pnp
parent25d39c39d82d062f4be685146abd054a3bafdf12 (diff)
downloadop-kernel-dev-f61ed7e32d2d6a0a8c3c101da513ccedd542e14d.zip
op-kernel-dev-f61ed7e32d2d6a0a8c3c101da513ccedd542e14d.tar.gz
PNP: dont sort by type in /sys/.../resources
Rather than stepping through all IO resources, then stepping through all MMIO resources, etc., we can just iterate over the resource list once directly. This can change the order in /sys, e.g., # cat /sys/devices/pnp0/00:07/resources # OLD state = active io 0x3f8-0x3ff irq 4 # cat /sys/devices/pnp0/00:07/resources # NEW state = active irq 4 io 0x3f8-0x3ff The old code artificially sorted resources by type; the new code just lists them in the order we read them from the ISAPNP hardware or the BIOS. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Andi Kleen <ak@linux.intel.com>
Diffstat (limited to 'drivers/pnp')
-rw-r--r--drivers/pnp/interface.c56
1 files changed, 22 insertions, 34 deletions
diff --git a/drivers/pnp/interface.c b/drivers/pnp/interface.c
index 7fc86bb..674e8ba 100644
--- a/drivers/pnp/interface.c
+++ b/drivers/pnp/interface.c
@@ -248,8 +248,9 @@ static ssize_t pnp_show_current_resources(struct device *dmdev,
char *buf)
{
struct pnp_dev *dev = to_pnp_dev(dmdev);
+ struct pnp_resource *pnp_res;
struct resource *res;
- int i, ret;
+ int ret;
pnp_info_buffer_t *buffer;
if (!dev)
@@ -262,46 +263,33 @@ static ssize_t pnp_show_current_resources(struct device *dmdev,
buffer->buffer = buf;
buffer->curr = buffer->buffer;
- pnp_printf(buffer, "state = ");
- if (dev->active)
- pnp_printf(buffer, "active\n");
- else
- pnp_printf(buffer, "disabled\n");
+ pnp_printf(buffer, "state = %s\n", dev->active ? "active" : "disabled");
- for (i = 0; (res = pnp_get_resource(dev, IORESOURCE_IO, i)); i++) {
- pnp_printf(buffer, "io");
- if (res->flags & IORESOURCE_DISABLED)
- pnp_printf(buffer, " disabled\n");
- else
- pnp_printf(buffer, " 0x%llx-0x%llx\n",
- (unsigned long long) res->start,
- (unsigned long long) res->end);
- }
- for (i = 0; (res = pnp_get_resource(dev, IORESOURCE_MEM, i)); i++) {
- pnp_printf(buffer, "mem");
- if (res->flags & IORESOURCE_DISABLED)
+ list_for_each_entry(pnp_res, &dev->resources, list) {
+ res = &pnp_res->res;
+
+ pnp_printf(buffer, pnp_resource_type_name(res));
+
+ if (res->flags & IORESOURCE_DISABLED) {
pnp_printf(buffer, " disabled\n");
- else
- pnp_printf(buffer, " 0x%llx-0x%llx\n",
+ continue;
+ }
+
+ switch (pnp_resource_type(res)) {
+ case IORESOURCE_IO:
+ case IORESOURCE_MEM:
+ pnp_printf(buffer, " %#llx-%#llx\n",
(unsigned long long) res->start,
(unsigned long long) res->end);
- }
- for (i = 0; (res = pnp_get_resource(dev, IORESOURCE_IRQ, i)); i++) {
- pnp_printf(buffer, "irq");
- if (res->flags & IORESOURCE_DISABLED)
- pnp_printf(buffer, " disabled\n");
- else
- pnp_printf(buffer, " %lld\n",
- (unsigned long long) res->start);
- }
- for (i = 0; (res = pnp_get_resource(dev, IORESOURCE_DMA, i)); i++) {
- pnp_printf(buffer, "dma");
- if (res->flags & IORESOURCE_DISABLED)
- pnp_printf(buffer, " disabled\n");
- else
+ break;
+ case IORESOURCE_IRQ:
+ case IORESOURCE_DMA:
pnp_printf(buffer, " %lld\n",
(unsigned long long) res->start);
+ break;
+ }
}
+
ret = (buffer->curr - buf);
kfree(buffer);
return ret;
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