X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fgpu%2Fdrm%2Fradeon%2Fradeon_atombios.c;h=5673665ff216d9cf2f74f19ce51cd4897538b3e7;hb=54b41b97fd07842d8b64963d538003c5f756ca12;hp=1fff95505cf5fec08f5506c47e26b8e00866632c;hpb=bc53ba2918bef821dec3528397bc49cd55291e56;p=pandora-kernel.git

diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index 1fff95505cf5..5673665ff216 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -69,16 +69,19 @@ static inline struct radeon_i2c_bus_rec radeon_lookup_i2c_gpio(struct radeon_dev
 	struct radeon_i2c_bus_rec i2c;
 	int index = GetIndexIntoMasterTable(DATA, GPIO_I2C_Info);
 	struct _ATOM_GPIO_I2C_INFO *i2c_info;
-	uint16_t data_offset;
-	int i;
+	uint16_t data_offset, size;
+	int i, num_indices;
 
 	memset(&i2c, 0, sizeof(struct radeon_i2c_bus_rec));
 	i2c.valid = false;
 
-	if (atom_parse_data_header(ctx, index, NULL, NULL, NULL, &data_offset)) {
+	if (atom_parse_data_header(ctx, index, &size, NULL, NULL, &data_offset)) {
 		i2c_info = (struct _ATOM_GPIO_I2C_INFO *)(ctx->bios + data_offset);
 
-		for (i = 0; i < ATOM_MAX_SUPPORTED_DEVICE; i++) {
+		num_indices = (size - sizeof(ATOM_COMMON_TABLE_HEADER)) /
+			sizeof(ATOM_GPIO_I2C_ASSIGMENT);
+
+		for (i = 0; i < num_indices; i++) {
 			gpio = &i2c_info->asGPIO_Info[i];
 
 			if (gpio->sucI2cId.ucAccess == id) {