linux-kernel - [PATCH] bnx2x: truncate value to original sizing

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Message-Id: <20220321023155.106066-1-morbo@google.com>
Date:   Sun, 20 Mar 2022 19:31:55 -0700
From:   Bill Wendling <morbo@...gle.com>
To:     Ariel Elior <aelior@...vell.com>,
        Sudarsana Kalluru <skalluru@...vell.com>,
        Manish Chopra <manishc@...vell.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        llvm@...ts.linux.dev
Cc:     Bill Wendling <morbo@...gle.com>
Subject: [PATCH] bnx2x: truncate value to original sizing

The original behavior was to print out unsigned short or unsigned char
values. The change in commit d65aea8e8298 ("bnx2x: use correct format
characters") prints out the whole value if not truncated. So truncate
the value to an unsigned {short|char} to retain the original behavior.

Fixes: d65aea8e8298 ("bnx2x: use correct format characters")
Link: https://github.com/ClangBuiltLinux/linux/issues/378
Signed-off-by: Bill Wendling <morbo@...gle.com>
---
 drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
index bede16760388..7071604f9984 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
@@ -6178,7 +6178,8 @@ static int bnx2x_format_ver(u32 num, u8 *str, u16 *len)
 		return -EINVAL;
 	}
 
-	ret = scnprintf(str, *len, "%x.%x", num >> 16, num);
+	ret = scnprintf(str, *len, "%x.%x", (num >> 16) & 0xFFFF,
+			num & 0xFFFF);
 	*len -= ret;
 	return 0;
 }
@@ -6193,7 +6194,8 @@ static int bnx2x_3_seq_format_ver(u32 num, u8 *str, u16 *len)
 		return -EINVAL;
 	}
 
-	ret = scnprintf(str, *len, "%x.%x.%x", num >> 16, num >> 8, num);
+	ret = scnprintf(str, *len, "%x.%x.%x", (num >> 16) & 0xFF,
+			(num >> 8) & 0xFF, num & 0xFF);
 	*len -= ret;
 	return 0;
 }
-- 
2.35.1.894.gb6a874cedc-goog