ACPI: Fix thermal shutdowns

[karo-tx-linux.git] / lib / bitmap.c

diff --git a/lib/bitmap.c b/lib/bitmap.c
index c4cb48f77f0c6ab157ba41ec0411644a44a39ca9..06fb57c86de07007dad10f4bbeb3b1adcc0742c4 100644 (file)
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -317,19 +317,14 @@ EXPORT_SYMBOL(bitmap_scnprintf);
 
 /**
  * bitmap_scnprintf_len - return buffer length needed to convert
- * bitmap to an ASCII hex string.
- * @len: number of bits to be converted
+ * bitmap to an ASCII hex string
+ * @nr_bits: number of bits to be converted
  */
-int bitmap_scnprintf_len(unsigned int len)
+int bitmap_scnprintf_len(unsigned int nr_bits)
 {
-       /* we need 9 chars per word for 32 bit words (8 hexdigits + sep/null) */
-       int bitslen = ALIGN(len, CHUNKSZ);
-       int wordlen = CHUNKSZ / 4;
-       int buflen = (bitslen / wordlen) * (wordlen + 1) * sizeof(char);
-
-       return buflen;
+       unsigned int nr_nibbles = ALIGN(nr_bits, 4) / 4;
+       return nr_nibbles + ALIGN(nr_nibbles, CHUNKSZ / 4) / (CHUNKSZ / 4) - 1;
 }
-EXPORT_SYMBOL(bitmap_scnprintf_len);
 
 /**
  * __bitmap_parse - convert an ASCII hex string into a bitmap.