this set adds support for removal of gpu drm dead code.

patch1:
`num` is a data of u8 type and ATOM_MAX_HW_I2C_READ == 255, 

so there is a impossible condition '(num > 255) => (0-255 > 255)'.

Signed-off-by: Pan Zhang <[email protected]>
---
 drivers/gpu/drm/amd/amdgpu/atombios_i2c.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_i2c.c 
b/drivers/gpu/drm/amd/amdgpu/atombios_i2c.c
index 980c363..b4cc7c5 100644
--- a/drivers/gpu/drm/amd/amdgpu/atombios_i2c.c
+++ b/drivers/gpu/drm/amd/amdgpu/atombios_i2c.c
@@ -76,11 +76,6 @@ static int amdgpu_atombios_i2c_process_i2c_ch(struct 
amdgpu_i2c_chan *chan,
                }
                args.lpI2CDataOut = cpu_to_le16(out);
        } else {
-               if (num > ATOM_MAX_HW_I2C_READ) {
-                       DRM_ERROR("hw i2c: tried to read too many bytes (%d vs 
255)\n", num);
-                       r = -EINVAL;
-                       goto done;
-               }
                args.ucRegIndex = 0;
                args.lpI2CDataOut = 0;
        }
-- 
2.7.4

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