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path: root/drivers/acpi/asus_acpi.c
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Diffstat (limited to 'drivers/acpi/asus_acpi.c')
-rw-r--r--drivers/acpi/asus_acpi.c18
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/acpi/asus_acpi.c b/drivers/acpi/asus_acpi.c
index f4c87750dbf..523fff9cf14 100644
--- a/drivers/acpi/asus_acpi.c
+++ b/drivers/acpi/asus_acpi.c
@@ -1119,6 +1119,8 @@ static int __init asus_hotk_check(void)
1119 return result; 1119 return result;
1120} 1120}
1121 1121
1122static int asus_hotk_found;
1123
1122static int __init asus_hotk_add(struct acpi_device *device) 1124static int __init asus_hotk_add(struct acpi_device *device)
1123{ 1125{
1124 acpi_status status = AE_OK; 1126 acpi_status status = AE_OK;
@@ -1180,6 +1182,8 @@ static int __init asus_hotk_add(struct acpi_device *device)
1180 } 1182 }
1181 } 1183 }
1182 1184
1185 asus_hotk_found = 1;
1186
1183 end: 1187 end:
1184 if (result) { 1188 if (result) {
1185 kfree(hotk); 1189 kfree(hotk);
@@ -1226,7 +1230,19 @@ static int __init asus_acpi_init(void)
1226 asus_proc_dir->owner = THIS_MODULE; 1230 asus_proc_dir->owner = THIS_MODULE;
1227 1231
1228 result = acpi_bus_register_driver(&asus_hotk_driver); 1232 result = acpi_bus_register_driver(&asus_hotk_driver);
1229 if (result < 1) { 1233 if (result < 0) {
1234 remove_proc_entry(PROC_ASUS, acpi_root_dir);
1235 return -ENODEV;
1236 }
1237
1238 /*
1239 * This is a bit of a kludge. We only want this module loaded
1240 * for ASUS systems, but there's currently no way to probe the
1241 * ACPI namespace for ASUS HIDs. So we just return failure if
1242 * we didn't find one, which will cause the module to be
1243 * unloaded.
1244 */
1245 if (!asus_hotk_found) {
1230 acpi_bus_unregister_driver(&asus_hotk_driver); 1246 acpi_bus_unregister_driver(&asus_hotk_driver);
1231 remove_proc_entry(PROC_ASUS, acpi_root_dir); 1247 remove_proc_entry(PROC_ASUS, acpi_root_dir);
1232 return -ENODEV; 1248 return -ENODEV;