powerpc/nvram: Add nvram_find_partition() (cf5cbf9f) · Commits · 戴 / test

arch/powerpc/kernel/nvram_64.c

+22 −0

Original line number	Diff line number	Diff line
		@@ -429,6 +429,28 @@ static int nvram_get_partition_size(loff_t data_index)
		}


		/**
		* nvram_find_partition - Find an nvram partition by signature and name
		* @name: Name of the partition or NULL for any name
		* @sig: Signature to test against
		* @out_size: if non-NULL, returns the size of the data part of the partition
		*/
		loff_t nvram_find_partition(const char name, int sig, int out_size)
		{
		struct nvram_partition *p;

		list_for_each_entry(p, &nvram_part->partition, partition) {
		if (p->header.signature == sig &&
		(!name \|\| !strncmp(p->header.name, name, 12))) {
		if (out_size)
		out_size = (p->header.length - 1)
		NVRAM_BLOCK_LEN;
		return p->index + NVRAM_HEADER_LEN;
		}
		}
		return 0;
		}

		/* nvram_setup_partition
		*
		* This will setup the partition we need for buffering the