platform/x86: wmi: use !p to check for NULL

Other parts of the code use the `!p` idiom to check
for NULL pointers, convert `find_guid_context()` to
do the same.

Signed-off-by: Barnabás Pőcze <pobrn@protonmail.com>
Link: https://lore.kernel.org/r/20210904175450.156801-19-pobrn@protonmail.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
index 9ed8622..3836453 100644 (file)
--- a/drivers/platform/x86/wmi.c
+++ b/drivers/platform/x86/wmi.c
@@ -141,10 +141,10 @@ static const void *find_guid_context(struct wmi_block *wblock,
        const struct wmi_device_id *id;
        guid_t guid_input;
 
-       if (wdriver->id_table == NULL)
+       id = wdriver->id_table;
+       if (!id)
                return NULL;
 
-       id = wdriver->id_table;
        while (*id->guid_string) {
                if (guid_parse(id->guid_string, &guid_input))
                        continue;