[PATCH 1/2] fs/squashfs: add support for LZO decompression

[Joao Marcos Costa]

Add call to lzo's lzo1x_decompress_safe() and rename source length
parameter from 'lenp' to 'src_len'.

Signed-off-by: Joao Marcos Costa <joaomarcos.co...@bootlin.com>
---
 fs/squashfs/sqfs_decompressor.c | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/fs/squashfs/sqfs_decompressor.c b/fs/squashfs/sqfs_decompressor.c
index 09ca6cf6d0..9285df5d3b 100644
--- a/fs/squashfs/sqfs_decompressor.c
+++ b/fs/squashfs/sqfs_decompressor.c
@@ -9,6 +9,11 @@
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
+
+#if IS_ENABLED(CONFIG_LZO)
+#include <linux/lzo.h>
+#endif
+
 #if IS_ENABLED(CONFIG_ZLIB)
 #include <u-boot/zlib.h>
 #endif
@@ -35,20 +40,32 @@ static void zlib_decompression_status(int ret)
 #endif
 
 int sqfs_decompress(u16 comp_type, void *dest, unsigned long *dest_len,
-                   void *source, u32 lenp)
+                   void *source, u32 src_len)
 {
        int ret = 0;
 
        switch (comp_type) {
 #if IS_ENABLED(CONFIG_ZLIB)
        case SQFS_COMP_ZLIB:
-               ret = uncompress(dest, dest_len, source, lenp);
+               ret = uncompress(dest, dest_len, source, src_len);
                if (ret) {
                        zlib_decompression_status(ret);
                        return -EINVAL;
                }
 
                break;
+#endif
+#if IS_ENABLED(CONFIG_LZO)
+       case SQFS_COMP_LZO: {
+               size_t lzo_dest_len = *dest_len;
+               ret = lzo1x_decompress_safe(source, src_len, dest, 
&lzo_dest_len);
+               if (ret) {
+                       printf("LZO decompression failed. Error code: %d\n", 
ret);
+                       return -EINVAL;
+               }
+
+               break;
+       }
 #endif
        default:
                printf("Error: unknown compression type.\n");
-- 
2.17.1