Commit d012ea92 authored Dec 18, 2019 by Pan Zhang Committed by Alex Deucher Dec 18, 2019

gpu: drm: dead code elimination



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

patch3 is similar with patch 1:
`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 <zhangpan26@huawei.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent 719423f6

drivers/gpu/drm/radeon/atombios_i2c.c

+0 −5

Original line number	Diff line number	Diff line
		@@ -68,11 +68,6 @@ static int radeon_process_i2c_ch(struct radeon_i2c_chan *chan,
		memcpy(&out, &buf[1], num);
		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;
		}

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