change wifi driver to cypress

hc

2024-01-05 071106ecf68c401173c58808b1cf5f68cc50d390

 kernel/fs/udf/balloc.c
..
..
@@ -36,18 +36,41 @@
36
36
 			     unsigned long bitmap_nr)
37
37
 {
38
38
 	struct buffer_head *bh = NULL;
39
-	int retval = 0;
39
+	int i;
40
+	int max_bits, off, count;
40
41
 	struct kernel_lb_addr loc;
41
42
 
42
43
 	loc.logicalBlockNum = bitmap->s_extPosition;
43
44
 	loc.partitionReferenceNum = UDF_SB(sb)->s_partition;
44
45
 
45
46
 	bh = udf_tread(sb, udf_get_lb_pblock(sb, &loc, block));
46
-	if (!bh)
47
-		retval = -EIO;
48
-
49
47
 	bitmap->s_block_bitmap[bitmap_nr] = bh;
50
-	return retval;
48
+	if (!bh)
49
+		return -EIO;
50
+
51
+	/* Check consistency of Space Bitmap buffer. */
52
+	max_bits = sb->s_blocksize * 8;
53
+	if (!bitmap_nr) {
54
+		off = sizeof(struct spaceBitmapDesc) << 3;
55
+		count = min(max_bits - off, bitmap->s_nr_groups);
56
+	} else {
57
+		/*
58
+		 * Rough check if bitmap number is too big to have any bitmap
59
+		 * blocks reserved.
60
+		 */
61
+		if (bitmap_nr >
62
+		    (bitmap->s_nr_groups >> (sb->s_blocksize_bits + 3)) + 2)
63
+			return 0;
64
+		off = 0;
65
+		count = bitmap->s_nr_groups - bitmap_nr * max_bits +
66
+				(sizeof(struct spaceBitmapDesc) << 3);
67
+		count = min(count, max_bits);
68
+	}
69
+
70
+	for (i = 0; i < count; i++)
71
+		if (udf_test_bit(i + off, bh->b_data))
72
+			return -EFSCORRUPTED;
73
+	return 0;
51
74
 }
52
75
 
53
76
 static int __load_block_bitmap(struct super_block *sb,