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drm/i915/sdvo: Add BUILD_BUG_ON to warn if the structs are ever miscompiled

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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2011-01-25 13:59:37 +00:00
parent bc65212c36
commit 1a3665c81d
1 changed files with 9 additions and 0 deletions
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9
drivers/gpu/drm/i915/intel_sdvo.c
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@ -587,6 +587,7 @@ static bool intel_sdvo_get_trained_inputs(struct intel_sdvo *intel_sdvo, bool *i
{
struct intel_sdvo_get_trained_inputs_response response;
BUILD_BUG_ON(sizeof(response) != 1);
if (!intel_sdvo_get_value(intel_sdvo, SDVO_CMD_GET_TRAINED_INPUTS,
&response, sizeof(response)))
return false;
@ -634,6 +635,7 @@ static bool intel_sdvo_get_input_pixel_clock_range(struct intel_sdvo *intel_sdvo
{
struct intel_sdvo_pixel_clock_range clocks;
BUILD_BUG_ON(sizeof(clocks) != 4);
if (!intel_sdvo_get_value(intel_sdvo,
SDVO_CMD_GET_INPUT_PIXEL_CLOCK_RANGE,
&clocks, sizeof(clocks)))
@ -701,6 +703,8 @@ intel_sdvo_create_preferred_input_timing(struct intel_sdvo *intel_sdvo,
static bool intel_sdvo_get_preferred_input_timing(struct intel_sdvo *intel_sdvo,
struct intel_sdvo_dtd *dtd)
{
BUILD_BUG_ON(sizeof(dtd->part1) != 8);
BUILD_BUG_ON(sizeof(dtd->part2) != 8);
return intel_sdvo_get_value(intel_sdvo, SDVO_CMD_GET_PREFERRED_INPUT_TIMING_PART1,
&dtd->part1, sizeof(dtd->part1)) &&
intel_sdvo_get_value(intel_sdvo, SDVO_CMD_GET_PREFERRED_INPUT_TIMING_PART2,
@ -798,6 +802,7 @@ static bool intel_sdvo_check_supp_encode(struct intel_sdvo *intel_sdvo)
{
struct intel_sdvo_encode encode;
BUILD_BUG_ON(sizeof(encode) != 2);
return intel_sdvo_get_value(intel_sdvo,
SDVO_CMD_GET_SUPP_ENCODE,
&encode, sizeof(encode));
@ -1161,6 +1166,7 @@ static int intel_sdvo_mode_valid(struct drm_connector *connector,
static bool intel_sdvo_get_capabilities(struct intel_sdvo *intel_sdvo, struct intel_sdvo_caps *caps)
{
BUILD_BUG_ON(sizeof(*caps) != 8);
if (!intel_sdvo_get_value(intel_sdvo,
SDVO_CMD_GET_DEVICE_CAPS,
caps, sizeof(*caps)))
@ -2200,6 +2206,7 @@ static bool intel_sdvo_tv_create_property(struct intel_sdvo *intel_sdvo,
if (!intel_sdvo_set_target_output(intel_sdvo, type))
return false;
BUILD_BUG_ON(sizeof(format) != 6);
if (!intel_sdvo_get_value(intel_sdvo,
SDVO_CMD_GET_SUPPORTED_TV_FORMATS,
&format, sizeof(format)))
@ -2406,6 +2413,8 @@ static bool intel_sdvo_create_enhance_property(struct intel_sdvo *intel_sdvo,
uint16_t response;
} enhancements;
BUILD_BUG_ON(sizeof(enhancements) != 2);
enhancements.response = 0;
intel_sdvo_get_value(intel_sdvo,
SDVO_CMD_GET_SUPPORTED_ENHANCEMENTS,