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authorCyril Roelandt <tipecaml@gmail.com>2012-11-23 02:20:31 +0400
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2012-11-23 02:20:31 +0400
commit05bce79e6d24ee6eb2beddf0f6314358404d472f (patch)
treeb7eb9e5e6dc1f3585493b07218681ba76b510182 /drivers
parent66fd3835ac9a3740a7bf953b439e54dbc326d272 (diff)
downloadlinux-05bce79e6d24ee6eb2beddf0f6314358404d472f.tar.xz
ACPI: drop unnecessary local variable from acpi_system_write_wakeup_device()
The LEN variable is unsigned, therefore checking whether it is less than 0 is useless. Also drop the LEN variable, since the COUNT parameter can be used instead. [rjw: Changed the subject.] Signed-off-by: Cyril Roelandt <tipecaml@gmail.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/acpi/proc.c11
1 files changed, 4 insertions, 7 deletions
diff --git a/drivers/acpi/proc.c b/drivers/acpi/proc.c
index 27adb090bb30..ef98796b3824 100644
--- a/drivers/acpi/proc.c
+++ b/drivers/acpi/proc.c
@@ -362,16 +362,13 @@ acpi_system_write_wakeup_device(struct file *file,
struct list_head *node, *next;
char strbuf[5];
char str[5] = "";
- unsigned int len = count;
- if (len > 4)
- len = 4;
- if (len < 0)
- return -EFAULT;
+ if (count > 4)
+ count = 4;
- if (copy_from_user(strbuf, buffer, len))
+ if (copy_from_user(strbuf, buffer, count))
return -EFAULT;
- strbuf[len] = '\0';
+ strbuf[count] = '\0';
sscanf(strbuf, "%s", str);
mutex_lock(&acpi_device_lock);