From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Karina Yankevich <k.yankevich@omp.ru>,
Sergey Shtylyov <s.shtylyov@omp.ru>,
Alan Stern <stern@rowland.harvard.edu>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Sasha Levin <sashal@kernel.org>,
linux-usb@vger.kernel.org, usb-storage@lists.one-eyed-alien.net
Subject: [PATCH AUTOSEL 5.10 2/8] usb: storage: sddr55: fix sloppy typing in sddr55_{read|write}_data()
Date: Wed, 3 Apr 2024 13:19:56 -0400 [thread overview]
Message-ID: <20240403172006.353022-2-sashal@kernel.org> (raw)
In-Reply-To: <20240403172006.353022-1-sashal@kernel.org>
From: Karina Yankevich <k.yankevich@omp.ru>
[ Upstream commit d6429a3555fb29f380c5841a12f5ac3f7444af03 ]
In sddr55_{read|write}_data(), the address variables are needlessly typed
as *unsigned long* -- which is 32-bit type on the 32-bit arches and 64-bit
type on the 64-bit arches; those variables' value should fit into just 3
command bytes and consists of 10-bit block # (or at least the max block #
seems to be 1023) and 4-/5-bit page # within a block, so 32-bit *unsigned*
*int* type should be more than enough...
Found by Linux Verification Center (linuxtesting.org) with the Svace static
analysis tool.
[Sergey: rewrote the patch subject/description]
Signed-off-by: Karina Yankevich <k.yankevich@omp.ru>
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Reviewed-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/4c9485f2-0bfc-591b-bfe7-2059289b554e@omp.ru
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
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 15dc25801cdcc..0aa079405d23c 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;
--
2.43.0
next parent reply other threads:[~2024-04-03 17:20 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20240403172006.353022-1-sashal@kernel.org>
2024-04-03 17:19 ` Sasha Levin [this message]
2024-04-03 17:19 ` [PATCH AUTOSEL 5.10 3/8] usb: typec: tcpci: add generic tcpci fallback compatible Sasha Levin
2024-04-03 17:19 ` [PATCH AUTOSEL 5.10 4/8] usb: sl811-hcd: only defined function checkdone if QUIRK2 is defined Sasha Levin
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