From: SF Markus Elfring <elfring@users.sourceforge.net>
To: linux-mtd@lists.infradead.org,
Boris Brezillon <boris.brezillon@free-electrons.com>,
Brian Norris <computersforpeace@gmail.com>,
Cyrille Pitchen <cyrille.pitchen@atmel.com>,
David Woodhouse <dwmw2@infradead.org>,
Denys Vlasenko <dvlasenk@redhat.com>,
Marek Vasut <marek.vasut@gmail.com>,
Richard Weinberger <richard@nod.at>
Cc: LKML <linux-kernel@vger.kernel.org>, kernel-janitors@vger.kernel.org
Subject: [PATCH 01/18] mtd-cfi_cmdset_0001: Use kmalloc_array() in cfi_intelext_partition_fixup()
Date: Wed, 11 Jan 2017 21:35:55 +0100 [thread overview]
Message-ID: <f74ef6ca-7159-ba15-b7a3-0a45e522729f@users.sourceforge.net> (raw)
In-Reply-To: <71189baa-8780-b80a-0b4d-9dae74763ba3@users.sourceforge.net>
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Tue, 10 Jan 2017 18:48:34 +0100
* A multiplication for the size determination of a memory allocation
indicated that an array data structure should be processed.
Thus use the corresponding function "kmalloc_array".
This issue was detected by using the Coccinelle software.
* Replace the specification of a data structure by a pointer dereference
to make the corresponding size determination a bit safer according to
the Linux coding style convention.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
drivers/mtd/chips/cfi_cmdset_0001.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c
index 5e1b68cbcd0a..68227aa74d22 100644
--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -746,7 +746,9 @@ static int cfi_intelext_partition_fixup(struct mtd_info *mtd,
newcfi = kmalloc(sizeof(struct cfi_private) + numvirtchips * sizeof(struct flchip), GFP_KERNEL);
if (!newcfi)
return -ENOMEM;
- shared = kmalloc(sizeof(struct flchip_shared) * cfi->numchips, GFP_KERNEL);
+ shared = kmalloc_array(cfi->numchips,
+ sizeof(*shared),
+ GFP_KERNEL);
if (!shared) {
kfree(newcfi);
return -ENOMEM;
--
2.11.0
next prev parent reply other threads:[~2017-01-11 20:38 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-11 20:34 [PATCH 00/18] MTD-CFI: Fine-tuning for several function implementations SF Markus Elfring
2017-01-11 20:35 ` SF Markus Elfring [this message]
2017-01-11 21:59 ` [PATCH 01/18] mtd-cfi_cmdset_0001: Use kmalloc_array() in cfi_intelext_partition_fixup() Marek Vasut
2017-01-11 20:37 ` [PATCH 02/18] mtd-cfi_cmdset_0001: Improve another size determination " SF Markus Elfring
2017-01-11 21:57 ` Marek Vasut
2017-01-11 20:38 ` [PATCH 03/18] mtd-cfi_cmdset_0001: Add some spaces for better code readability SF Markus Elfring
2017-01-12 9:19 ` Dan Carpenter
2017-01-11 20:39 ` [PATCH 04/18] mtd-cfi_cmdset_0001: Delete an unnecessary variable initialisation in do_write_oneword() SF Markus Elfring
2017-01-11 20:40 ` [PATCH 05/18] mtd-cfi_cmdset_0001: Use common error handling code " SF Markus Elfring
2017-01-11 20:41 ` [PATCH 06/18] mtd-cfi_cmdset_0001: Use kcalloc() in cfi_intelext_setup() SF Markus Elfring
2017-01-11 20:42 ` [PATCH 07/18] mtd-cfi_cmdset_0001: One function call and an unnecessary check less " SF Markus Elfring
2017-01-11 20:43 ` [PATCH 08/18] mtd-cfi_cmdset_0001: Rename a jump label " SF Markus Elfring
2017-01-11 20:44 ` [PATCH 09/18] mtd-cfi_cmdset_0002: Use kmalloc_array() in cfi_amdstd_setup() SF Markus Elfring
2017-01-11 20:45 ` [PATCH 10/18] mtd-cfi_cmdset_0002: One function call less in cfi_amdstd_setup() after error detection SF Markus Elfring
2017-01-11 20:46 ` [PATCH 11/18] mtd-cfi_cmdset_0002: Rename a jump label in cfi_amdstd_setup() SF Markus Elfring
2017-01-11 20:47 ` [PATCH 12/18] mtd-cfi_cmdset_0002: Add some spaces for better code readability SF Markus Elfring
2017-01-11 20:48 ` [PATCH 13/18] mtd-cfi_cmdset_0002: Delete an unnecessary variable initialisation in do_write_oneword() SF Markus Elfring
2017-01-11 20:49 ` [PATCH 14/18] mtd-cfi_cmdset_0002: Use common error handling code " SF Markus Elfring
2017-01-11 20:50 ` [PATCH 15/18] mtd-cfi_cmdset_0002: Use kcalloc() in cfi_ppb_unlock() SF Markus Elfring
2017-01-11 20:51 ` [PATCH 16/18] mtd-cfi_cmdset_0020: Use kmalloc_array() in cfi_staa_setup() SF Markus Elfring
2017-01-11 20:52 ` [PATCH 17/18] mtd-cfi_cmdset_0020: Use common error handling code " SF Markus Elfring
2017-01-11 20:55 ` [PATCH 18/18] mtd-cfi_cmdset_0020: Add some spaces for better code readability SF Markus Elfring
2017-01-12 9:27 ` Dan Carpenter
2017-01-11 21:56 ` [PATCH 00/18] MTD-CFI: Fine-tuning for several function implementations Boris Brezillon
2017-01-11 21:58 ` Marek Vasut
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