instance_count defines number of instances of data block and instance
itself is indexed from zero, which means first instance has number 0.
Therefore check for invalid instance should be non-strict inequality.

Signed-off-by: Pali Rohár <pali.ro...@gmail.com>
---
 drivers/platform/x86/wmi.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
index e32ba57..0765b17 100644
--- a/drivers/platform/x86/wmi.c
+++ b/drivers/platform/x86/wmi.c
@@ -218,7 +218,7 @@ acpi_status wmi_evaluate_method(const char *guid_string, u8 
instance,
        if (!(block->flags & ACPI_WMI_METHOD))
                return AE_BAD_DATA;
 
-       if (block->instance_count < instance)
+       if (block->instance_count <= instance)
                return AE_BAD_PARAMETER;
 
        input.count = 2;
@@ -265,7 +265,7 @@ static acpi_status __query_block(struct wmi_block *wblock, 
u8 instance,
        block = &wblock->gblock;
        handle = wblock->acpi_device->handle;
 
-       if (block->instance_count < instance)
+       if (block->instance_count <= instance)
                return AE_BAD_PARAMETER;
 
        /* Check GUID is a data block */
@@ -392,7 +392,7 @@ acpi_status wmi_set_block(const char *guid_string, u8 
instance,
        block = &wblock->gblock;
        handle = wblock->acpi_device->handle;
 
-       if (block->instance_count < instance)
+       if (block->instance_count <= instance)
                return AE_BAD_PARAMETER;
 
        /* Check GUID is a data block */
-- 
1.7.9.5

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