linux-kernel - [PATCH 3/7] lib/xz: Move s->lzma.len = 0 initialization to lzma

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Date:   Mon, 11 Oct 2021 05:31:41 +0800
From:   Gao Xiang <xiang@...nel.org>
To:     linux-erofs@...ts.ozlabs.org, LKML <linux-kernel@...r.kernel.org>
Cc:     Lasse Collin <lasse.collin@...aani.org>, Chao Yu <chao@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Greg KH <gregkh@...uxfoundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Gao Xiang <hsiangkao@...ux.alibaba.com>
Subject: [PATCH 3/7] lib/xz: Move s->lzma.len = 0 initialization to lzma_reset()

From: Lasse Collin <lasse.collin@...aani.org>

It's a more logical place even if the resetting needs to be done
only once per LZMA2 stream (if lzma_reset() called in the middle
of an LZMA2 stream, .len will already be 0).

Signed-off-by: Lasse Collin <lasse.collin@...aani.org>
Signed-off-by: Gao Xiang <hsiangkao@...ux.alibaba.com>
---
 lib/xz/xz_dec_lzma2.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/lib/xz/xz_dec_lzma2.c b/lib/xz/xz_dec_lzma2.c
index d548cf0e59fe..22b789645ce5 100644
--- a/lib/xz/xz_dec_lzma2.c
+++ b/lib/xz/xz_dec_lzma2.c
@@ -791,6 +791,7 @@ static void lzma_reset(struct xz_dec_lzma2 *s)
 	s->lzma.rep1 = 0;
 	s->lzma.rep2 = 0;
 	s->lzma.rep3 = 0;
+	s->lzma.len = 0;
 
 	/*
 	 * All probabilities are initialized to the same value. This hack
@@ -1174,8 +1175,6 @@ XZ_EXTERN enum xz_ret xz_dec_lzma2_reset(struct xz_dec_lzma2 *s, uint8_t props)
 		}
 	}
 
-	s->lzma.len = 0;
-
 	s->lzma2.sequence = SEQ_CONTROL;
 	s->lzma2.need_dict_reset = true;
 
-- 
2.20.1