From: SF Markus Elfring <elfring@users.sourceforge.net>
To: linux-atm-general@lists.sourceforge.net, netdev@vger.kernel.org,
Chas Williams <3chas3@gmail.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
kernel-janitors@vger.kernel.org,
Julia Lawall <julia.lawall@lip6.fr>,
Paolo Bonzini <pbonzini@redhat.com>
Subject: [PATCH] ATM-ForeRunnerHE: Use kmalloc_array() in he_init_group()
Date: Thu, 8 Sep 2016 15:50:05 +0200 [thread overview]
Message-ID: <edd03d91-0aff-73ed-cb04-c5851ac90dca@users.sourceforge.net> (raw)
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Thu, 8 Sep 2016 15:43:37 +0200
* Multiplications for the size determination of memory allocations
indicated that array data structures should be processed.
Thus use the corresponding function "kmalloc_array".
This issue was detected by using the Coccinelle software.
* Replace the specification of data types by pointer dereferences
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/atm/he.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/atm/he.c b/drivers/atm/he.c
index 0f5cb37..31b513a 100644
--- a/drivers/atm/he.c
+++ b/drivers/atm/he.c
@@ -779,8 +779,9 @@ static int he_init_group(struct he_dev *he_dev, int group)
G0_RBPS_BS + (group * 32));
/* bitmap table */
- he_dev->rbpl_table = kmalloc(BITS_TO_LONGS(RBPL_TABLE_SIZE)
- * sizeof(unsigned long), GFP_KERNEL);
+ he_dev->rbpl_table = kmalloc_array(BITS_TO_LONGS(RBPL_TABLE_SIZE),
+ sizeof(*he_dev->rbpl_table),
+ GFP_KERNEL);
if (!he_dev->rbpl_table) {
hprintk("unable to allocate rbpl bitmap table\n");
return -ENOMEM;
@@ -788,8 +789,9 @@ static int he_init_group(struct he_dev *he_dev, int group)
bitmap_zero(he_dev->rbpl_table, RBPL_TABLE_SIZE);
/* rbpl_virt 64-bit pointers */
- he_dev->rbpl_virt = kmalloc(RBPL_TABLE_SIZE
- * sizeof(struct he_buff *), GFP_KERNEL);
+ he_dev->rbpl_virt = kmalloc_array(RBPL_TABLE_SIZE,
+ sizeof(*he_dev->rbpl_virt),
+ GFP_KERNEL);
if (!he_dev->rbpl_virt) {
hprintk("unable to allocate rbpl virt table\n");
goto out_free_rbpl_table;
--
2.10.0
next reply other threads:[~2016-09-08 13:50 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-08 13:50 SF Markus Elfring [this message]
2016-09-10 2:27 ` [PATCH] ATM-ForeRunnerHE: Use kmalloc_array() in he_init_group() David Miller
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