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Subject[PATCH 1/8] powerpc/nvram: Return directly after a failed parameter validation in dev_nvram_write()
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From: Markus Elfring <elfring@users.sourceforge.net>
Date: Thu, 19 Jan 2017 15:22:56 +0100

* Return directly after an inappropriate input parameter was detected.

* Delete an initialisation for the variable "tmp" at the beginning
and an assignment for the variable "ret" which became unnecessary
with this refactoring.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
arch/powerpc/kernel/nvram_64.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c
index 34d2c595de23..37d08b95c3f0 100644
--- a/arch/powerpc/kernel/nvram_64.c
+++ b/arch/powerpc/kernel/nvram_64.c
@@ -790,17 +790,15 @@ static ssize_t dev_nvram_write(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
ssize_t ret;
- char *tmp = NULL;
+ char *tmp;
ssize_t size;

- ret = -ENODEV;
if (!ppc_md.nvram_size)
- goto out;
+ return -ENODEV;

- ret = 0;
size = ppc_md.nvram_size();
if (*ppos >= size || size < 0)
- goto out;
+ return 0;

count = min_t(size_t, count, size - *ppos);
count = min(count, PAGE_SIZE);
--
2.11.0
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