diff options
| author | Pandiyan, Dhinakaran <dhinakaran.pandiyan@intel.com> | 2017-09-18 15:21:39 -0700 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2017-09-25 15:21:55 +0300 |
| commit | e8b2577c5e312d175ed11a35a12346b19059277d (patch) | |
| tree | 2e6e968a5aa8d3061c2e86f0a9391eadb4b98758 /drivers/gpu/drm/i915/intel_dp.c | |
| parent | 9b1c581885c985b84d36a9ffa519a9b2e68708e1 (diff) | |
drm/i915/dp: Fix buffer size for sink_irq_esi read
The buffer size defined is 16 bytes whereas only 14 bytes are read. Add a
macro to avoid this discrepancy.
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Reviewed-by: James Ausmus <james.ausmus@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170918222141.4674-3-dhinakaran.pandiyan@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dp.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 48ed6c1b5a76..ff04b3616f95 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -42,6 +42,7 @@ #include "i915_drv.h" #define DP_LINK_CHECK_TIMEOUT (10 * 1000) +#define DP_DPRX_ESI_LEN 14 /* Compliance test status bits */ #define INTEL_DP_RESOLUTION_SHIFT_MASK 0 @@ -4013,15 +4014,9 @@ intel_dp_get_sink_irq(struct intel_dp *intel_dp, u8 *sink_irq_vector) static bool intel_dp_get_sink_irq_esi(struct intel_dp *intel_dp, u8 *sink_irq_vector) { - int ret; - - ret = drm_dp_dpcd_read(&intel_dp->aux, - DP_SINK_COUNT_ESI, - sink_irq_vector, 14); - if (ret != 14) - return false; - - return true; + return drm_dp_dpcd_read(&intel_dp->aux, DP_SINK_COUNT_ESI, + sink_irq_vector, DP_DPRX_ESI_LEN) == + DP_DPRX_ESI_LEN; } static uint8_t intel_dp_autotest_link_training(struct intel_dp *intel_dp) @@ -4221,7 +4216,7 @@ intel_dp_check_mst_status(struct intel_dp *intel_dp) bool bret; if (intel_dp->is_mst) { - u8 esi[16] = { 0 }; + u8 esi[DP_DPRX_ESI_LEN] = { 0 }; int ret = 0; int retry; bool handled; |