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authorLen Brown <len.brown@intel.com>2010-10-25 02:13:44 -0400
committerLen Brown <len.brown@intel.com>2010-10-25 02:13:44 -0400
commitb10b977b792bb28c03267e00562c8254dca50f36 (patch)
treec197935bb04c88775faa6782454f3a462cebf3d3 /drivers/pnp/pnpacpi/core.c
parent22156ea7bb631ac4d74b706f4875d41b2520dc26 (diff)
parent420a0f66378c84b00b0e603e4d38210102dbe367 (diff)
downloadlinux-linaro-stable-b10b977b792bb28c03267e00562c8254dca50f36.tar.gz
Merge branch 'pnpacpi-invalid-device-id' into release
Diffstat (limited to 'drivers/pnp/pnpacpi/core.c')
-rw-r--r--drivers/pnp/pnpacpi/core.c29
1 files changed, 24 insertions, 5 deletions
diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c
index 4aafcf89b03b..2d73dfcecdbb 100644
--- a/drivers/pnp/pnpacpi/core.c
+++ b/drivers/pnp/pnpacpi/core.c
@@ -28,7 +28,7 @@
#include "../base.h"
#include "pnpacpi.h"
-static int num = 0;
+static int num;
/* We need only to blacklist devices that have already an acpi driver that
* can't use pnp layer. We don't need to blacklist device that are directly
@@ -180,11 +180,24 @@ struct pnp_protocol pnpacpi_protocol = {
};
EXPORT_SYMBOL(pnpacpi_protocol);
+static char *pnpacpi_get_id(struct acpi_device *device)
+{
+ struct acpi_hardware_id *id;
+
+ list_for_each_entry(id, &device->pnp.ids, list) {
+ if (ispnpidacpi(id->id))
+ return id->id;
+ }
+
+ return NULL;
+}
+
static int __init pnpacpi_add_device(struct acpi_device *device)
{
acpi_handle temp = NULL;
acpi_status status;
struct pnp_dev *dev;
+ char *pnpid;
struct acpi_hardware_id *id;
/*
@@ -192,11 +205,17 @@ static int __init pnpacpi_add_device(struct acpi_device *device)
* driver should not be loaded.
*/
status = acpi_get_handle(device->handle, "_CRS", &temp);
- if (ACPI_FAILURE(status) || !ispnpidacpi(acpi_device_hid(device)) ||
- is_exclusive_device(device) || (!device->status.present))
+ if (ACPI_FAILURE(status))
+ return 0;
+
+ pnpid = pnpacpi_get_id(device);
+ if (!pnpid)
+ return 0;
+
+ if (is_exclusive_device(device) || !device->status.present)
return 0;
- dev = pnp_alloc_dev(&pnpacpi_protocol, num, acpi_device_hid(device));
+ dev = pnp_alloc_dev(&pnpacpi_protocol, num, pnpid);
if (!dev)
return -ENOMEM;
@@ -227,7 +246,7 @@ static int __init pnpacpi_add_device(struct acpi_device *device)
pnpacpi_parse_resource_option_data(dev);
list_for_each_entry(id, &device->pnp.ids, list) {
- if (!strcmp(id->id, acpi_device_hid(device)))
+ if (!strcmp(id->id, pnpid))
continue;
if (!ispnpidacpi(id->id))
continue;