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| author | Himangi Saraogi <himangi774@gmail.com> | 2014-07-15 19:19:11 +0200 |
|---|---|---|
| committer | Matthew Garrett <matthew.garrett@nebula.com> | 2014-08-16 10:23:51 +0200 |
| commit | 959ef6d5def6ff3256f04fbf559eeb7c74d5605a (patch) | |
| tree | 53e434a2986b21447a44d345207713b8a77b93e0 | |
| parent | drivers/platform/x86/thinkpad_acpi.c: don't test unsigned int for negativity (diff) | |
| download | linux-959ef6d5def6ff3256f04fbf559eeb7c74d5605a.tar.xz linux-959ef6d5def6ff3256f04fbf559eeb7c74d5605a.zip | |
WMI: Remove unnecessary null test
This patch removes the null test on block. block is initialized at the
beginning of the function to &wblock->gblock. Since wblock is
dereferenced prior to the null test, wblock must be a valid pointer,
and &wblock->gblock cannot be null.
The following Coccinelle script is used for detecting the change:
@r@
expression e,f;
identifier g,y;
statement S1,S2;
@@
*e = &f->g
<+...
f->y
...+>
*if (e != NULL || ...)
S1 else S2
Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
| -rw-r--r-- | drivers/platform/x86/wmi.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c index 43d13295e63d..737e56d46f61 100644 --- a/drivers/platform/x86/wmi.c +++ b/drivers/platform/x86/wmi.c @@ -256,10 +256,6 @@ static acpi_status wmi_method_enable(struct wmi_block *wblock, int enable) block = &wblock->gblock; handle = wblock->handle; - if (!block) - return AE_NOT_EXIST; - - snprintf(method, 5, "WE%02X", block->notify_id); status = acpi_execute_simple_method(handle, method, enable); |