[PATCH] acer-wmi: Using zero as the first WMI instance number

[Lee, Chun-Yi]

Pali Rohár found that there have some wmi query/evaluation
code that they used 'one' as the first WMI instance number.
But the number is indexed from zero that it's must less than
the instance_count in _WDG.

This patch changes those instance number from one to zero.

Cc: Darren Hart <dvh...@infradead.org>
Cc: Andy Shevchenko <a...@infradead.org>
Cc: Pali Rohár <pali.ro...@gmail.com> 
Signed-off-by: "Lee, Chun-Yi" <j...@suse.com>
---
 drivers/platform/x86/acer-wmi.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
index 79fa5ab..ef420b6 100644
--- a/drivers/platform/x86/acer-wmi.c
+++ b/drivers/platform/x86/acer-wmi.c
@@ -700,7 +700,7 @@ struct acpi_buffer *result)
        input.length = sizeof(struct wmab_args);
        input.pointer = (u8 *)regbuf;
 
-       status = wmi_evaluate_method(AMW0_GUID1, 1, 1, &input, result);
+       status = wmi_evaluate_method(AMW0_GUID1, 0, 1, &input, result);
 
        return status;
 }
@@ -965,7 +965,7 @@ WMI_execute_u32(u32 method_id, u32 in, u32 *out)
        u32 tmp = 0;
        acpi_status status;
 
-       status = wmi_evaluate_method(WMID_GUID1, 1, method_id, &input, &result);
+       status = wmi_evaluate_method(WMID_GUID1, 0, method_id, &input, &result);
 
        if (ACPI_FAILURE(status))
                return status;
@@ -1275,7 +1275,7 @@ static acpi_status __init WMID_set_capabilities(void)
        acpi_status status;
        u32 devices;
 
-       status = wmi_query_block(WMID_GUID2, 1, &out);
+       status = wmi_query_block(WMID_GUID2, 0, &out);
        if (ACPI_FAILURE(status))
                return status;
 
@@ -2018,7 +2018,7 @@ static u32 get_wmid_devices(void)
        acpi_status status;
        u32 devices = 0;
 
-       status = wmi_query_block(WMID_GUID2, 1, &out);
+       status = wmi_query_block(WMID_GUID2, 0, &out);
        if (ACPI_FAILURE(status))
                return 0;
 
-- 
2.10.2