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Subject[PATCH] ARM: pxa: Use kmalloc_array() in pxa_pm_init()
Date
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Thu, 25 Aug 2016 18:01:37 +0200

* 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 type 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>
---
arch/arm/mach-pxa/pm.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-pxa/pm.c b/arch/arm/mach-pxa/pm.c
index 388463b..e7450fb 100644
--- a/arch/arm/mach-pxa/pm.c
+++ b/arch/arm/mach-pxa/pm.c
@@ -104,8 +104,9 @@ static int __init pxa_pm_init(void)
return -EINVAL;
}

- sleep_save = kmalloc(pxa_cpu_pm_fns->save_count * sizeof(unsigned long),
- GFP_KERNEL);
+ sleep_save = kmalloc_array(pxa_cpu_pm_fns->save_count,
+ sizeof(*sleep_save),
+ GFP_KERNEL);
if (!sleep_save) {
printk(KERN_ERR "failed to alloc memory for pm save\n");
return -ENOMEM;
--
2.9.3
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