linux-kernel - [PATCH] firmware/psci: psci_checker: fix application of sizeof to pointer

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Message-ID: <1606179525-63938-1-git-send-email-tiantao6@hisilicon.com>
Date:   Tue, 24 Nov 2020 08:58:45 +0800
From:   Tian Tao <tiantao6@...ilicon.com>
To:     <mark.rutland@....com>, <lorenzo.pieralisi@....com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] firmware/psci: psci_checker: fix application of sizeof to pointer

sizeof when applied to a pointer typed expression gives the size of
the pointer.
The proper fix in this particular case is to code sizeof(*cpu_groups)
instead of sizeof(cpu_groups).
This issue was detected with the help of Coccinelle.

Signed-off-by: Tian Tao <tiantao6@...ilicon.com>
---
 drivers/firmware/psci/psci_checker.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/firmware/psci/psci_checker.c b/drivers/firmware/psci/psci_checker.c
index 9a369a2..116eb46 100644
--- a/drivers/firmware/psci/psci_checker.c
+++ b/drivers/firmware/psci/psci_checker.c
@@ -155,7 +155,7 @@ static int alloc_init_cpu_groups(cpumask_var_t **pcpu_groups)
 	if (!alloc_cpumask_var(&tmp, GFP_KERNEL))
 		return -ENOMEM;
 
-	cpu_groups = kcalloc(nb_available_cpus, sizeof(cpu_groups),
+	cpu_groups = kcalloc(nb_available_cpus, sizeof(*cpu_groups),
 			     GFP_KERNEL);
 	if (!cpu_groups) {
 		free_cpumask_var(tmp);
-- 
2.7.4