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.rohar@xxxxxxxxx> --- 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
