diff options
| author | Pali Rohár <pali.rohar@gmail.com> | 2017-08-12 10:44:18 +0300 |
|---|---|---|
| committer | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2017-08-18 15:10:40 +0300 |
| commit | 6afa1e2a32f4bd28df4cbe75454fde837dad4c09 (patch) | |
| tree | 6636cb72b0cd721e3d2ab3d37c47ce34c69d3db2 /drivers/platform | |
| parent | ade50296186a1c45311d05a06117a2bd112d37fd (diff) | |
| download | linux-6afa1e2a32f4bd28df4cbe75454fde837dad4c09.tar.xz | |
platform/x86: wmi: Fix check for method instance number
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@gmail.com>
Reviewed-by: Darren Hart (VMware) <dvhart@infradead.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/wmi.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c index e32ba575e8d9..0765b1797d4c 100644 --- a/drivers/platform/x86/wmi.c +++ b/drivers/platform/x86/wmi.c @@ -218,7 +218,7 @@ u32 method_id, const struct acpi_buffer *in, struct acpi_buffer *out) 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 */ |