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radeon_hd: Sanitize dp_aux messages before use

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This commit is contained in:
Alexander von Gluck IV
2015-07-13 23:26:26 -05:00
parent 7ea1ad1028
commit 408e616e05
1 changed files with 15 additions and 0 deletions
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src/add-ons/accelerants/radeon_hd/displayport.cpp
+15
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@@ -228,6 +228,8 @@ dpcd_reg_write(uint32 connectorIndex, uint16 address, uint8 value)
__func__, connectorIndex, address, value);
dp_aux_msg message;
memset(&message, 0, sizeof(message));
message.address = address;
message.buffer = &value;
message.request = DP_AUX_NATIVE_WRITE;
@@ -251,6 +253,8 @@ dpcd_reg_read(uint32 connectorIndex, uint16 address)
uint8 response[3];
dp_aux_msg message;
memset(&message, 0, sizeof(message));
message.address = address;
message.buffer = &response;
message.request = DP_AUX_NATIVE_READ;
@@ -274,6 +278,8 @@ dp_aux_get_i2c_byte(uint32 connectorIndex, uint16 address, uint8* data,
{
uint8 reply[3];
dp_aux_msg message;
memset(&message, 0, sizeof(message));
message.address = address;
message.buffer = reply;
message.request = DP_AUX_I2C_READ;
@@ -321,6 +327,8 @@ dp_aux_set_i2c_byte(uint32 connectorIndex, uint16 address, uint8* data,
bool start, bool stop)
{
dp_aux_msg message;
memset(&message, 0, sizeof(message));
message.address = address;
message.buffer = data;
message.request = DP_AUX_I2C_WRITE;
@@ -459,6 +467,8 @@ dp_setup_connectors()
dpInfo->auxPin = auxPin;
dp_aux_msg message;
memset(&message, 0, sizeof(message));
message.address = DP_DPCD_REV;
message.request = DP_AUX_NATIVE_READ;
// TODO: validate
@@ -490,7 +500,10 @@ bool
dp_get_link_status(uint32 connectorIndex)
{
dp_info* dp = &gConnector[connectorIndex]->dpInfo;
dp_aux_msg message;
memset(&message, 0, sizeof(message));
message.address = DP_LANE_STATUS_0_1;
message.size = DP_LINK_STATUS_SIZE;
message.buffer = dp->linkStatus;
@@ -563,6 +576,8 @@ dp_update_vs_emph(uint32 connectorIndex)
dp->trainingSet[0], ATOM_TRANSMITTER_ACTION_SETUP_VSEMPH);
dp_aux_msg message;
memset(&message, 0, sizeof(message));
message.request = DP_AUX_NATIVE_WRITE;
message.address = DP_TRAIN_LANE0;
message.buffer = dp->trainingSet;