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-rw-r--r--sys/isa/isa_common.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/sys/isa/isa_common.c b/sys/isa/isa_common.c
index 71409f0..dee64e2 100644
--- a/sys/isa/isa_common.c
+++ b/sys/isa/isa_common.c
@@ -423,17 +423,22 @@ isa_assign_resources(device_t child)
struct isa_device *idev = DEVTOISA(child);
struct isa_config_entry *ice;
struct isa_config *cfg;
+ char *reason = "Empty ISA id_configs";
cfg = malloc(sizeof(struct isa_config), M_TEMP, M_NOWAIT|M_ZERO);
if (cfg == NULL)
return(0);
TAILQ_FOREACH(ice, &idev->id_configs, ice_link) {
+ reason = "memory";
if (!isa_find_memory(child, &ice->ice_config, cfg))
continue;
+ reason = "port";
if (!isa_find_port(child, &ice->ice_config, cfg))
continue;
+ reason = "irq";
if (!isa_find_irq(child, &ice->ice_config, cfg))
continue;
+ reason = "drq";
if (!isa_find_drq(child, &ice->ice_config, cfg))
continue;
@@ -441,6 +446,7 @@ isa_assign_resources(device_t child)
* A working configuration was found enable the device
* with this configuration.
*/
+ reason = "no callback";
if (idev->id_config_cb) {
idev->id_config_cb(idev->id_config_arg,
cfg, 1);
@@ -453,7 +459,7 @@ isa_assign_resources(device_t child)
* Disable the device.
*/
bus_print_child_header(device_get_parent(child), child);
- printf(" can't assign resources\n");
+ printf(" can't assign resources (%s)\n", reason);
if (bootverbose)
isa_print_child(device_get_parent(child), child);
bzero(cfg, sizeof (*cfg));
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