drm/radeon/dp: use i2c_get_adapdata rather than casting

Minor code cleanup.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>

diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c
index 4ad7643..c79ba8a 100644 (file)
--- a/drivers/gpu/drm/radeon/atombios_dp.c
+++ b/drivers/gpu/drm/radeon/atombios_dp.c
@@ -236,7 +236,7 @@ int radeon_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode,
                         u8 write_byte, u8 *read_byte)
 {
        struct i2c_algo_dp_aux_data *algo_data = adapter->algo_data;
-       struct radeon_i2c_chan *auxch = (struct radeon_i2c_chan *)adapter;
+       struct radeon_i2c_chan *auxch = i2c_get_adapdata(adapter);
        u16 address = algo_data->address;
        u8 msg[5];
        u8 reply[2];