linux-kernel - [PATCH v2] usb: storage: sddr55: clean up variable type

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Message-ID: <20230227112541.14849-1-k.yankevich@omp.ru>
Date:   Mon, 27 Feb 2023 14:25:41 +0300
From:   Karina Yankevich <k.yankevich@....ru>
To:     Alan Stern <stern@...land.harvard.edu>
CC:     Karina Yankevich <k.yankevich@....ru>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        <linux-usb@...r.kernel.org>,
        <usb-storage@...ts.one-eyed-alien.net>,
        <linux-kernel@...r.kernel.org>, <lvc-project@...uxtesting.org>
Subject: [PATCH v2] usb: storage: sddr55: clean up variable type

SVACE static analyzer complains that we're possibly
losing information by shifting an 'unsigned int pba'
variables in sddr55_{read,write}_data().
It is a false positive, because of the card's total capacity
is no larger than 128 MB. But 'unsigned int' is more
suitable in this case.

Found by OMP on behalf of Linux Verification Center
(linuxtesting.org) with SVACE.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Karina Yankevich <k.yankevich@....ru>
---
 drivers/usb/storage/sddr55.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/storage/sddr55.c b/drivers/usb/storage/sddr55.c
index 15dc25801cdc..0aa079405d23 100644
--- a/drivers/usb/storage/sddr55.c
+++ b/drivers/usb/storage/sddr55.c
@@ -196,7 +196,7 @@ static int sddr55_read_data(struct us_data *us,
 	unsigned char *buffer;
 
 	unsigned int pba;
-	unsigned long address;
+	unsigned int address;
 
 	unsigned short pages;
 	unsigned int len, offset;
@@ -316,7 +316,7 @@ static int sddr55_write_data(struct us_data *us,
 
 	unsigned int pba;
 	unsigned int new_pba;
-	unsigned long address;
+	unsigned int address;
 
 	unsigned short pages;
 	int i;
-- 
2.39.1