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-rw-r--r--kernel/resource.c32
1 files changed, 0 insertions, 32 deletions
diff --git a/kernel/resource.c b/kernel/resource.c
index 19f2357dfda3..90552aab5f2d 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -1034,8 +1034,6 @@ resource_size_t resource_alignment(struct resource *res)
1034 * 1034 *
1035 * request_region creates a new busy region. 1035 * request_region creates a new busy region.
1036 * 1036 *
1037 * check_region returns non-zero if the area is already busy.
1038 *
1039 * release_region releases a matching busy region. 1037 * release_region releases a matching busy region.
1040 */ 1038 */
1041 1039
@@ -1098,36 +1096,6 @@ struct resource * __request_region(struct resource *parent,
1098EXPORT_SYMBOL(__request_region); 1096EXPORT_SYMBOL(__request_region);
1099 1097
1100/** 1098/**
1101 * __check_region - check if a resource region is busy or free
1102 * @parent: parent resource descriptor
1103 * @start: resource start address
1104 * @n: resource region size
1105 *
1106 * Returns 0 if the region is free at the moment it is checked,
1107 * returns %-EBUSY if the region is busy.
1108 *
1109 * NOTE:
1110 * This function is deprecated because its use is racy.
1111 * Even if it returns 0, a subsequent call to request_region()
1112 * may fail because another driver etc. just allocated the region.
1113 * Do NOT use it. It will be removed from the kernel.
1114 */
1115int __check_region(struct resource *parent, resource_size_t start,
1116 resource_size_t n)
1117{
1118 struct resource * res;
1119
1120 res = __request_region(parent, start, n, "check-region", 0);
1121 if (!res)
1122 return -EBUSY;
1123
1124 release_resource(res);
1125 free_resource(res);
1126 return 0;
1127}
1128EXPORT_SYMBOL(__check_region);
1129
1130/**
1131 * __release_region - release a previously reserved resource region 1099 * __release_region - release a previously reserved resource region
1132 * @parent: parent resource descriptor 1100 * @parent: parent resource descriptor
1133 * @start: resource start address 1101 * @start: resource start address