From d012ea925d6110f2bd4a9b398f87ef1a76c649c5 Mon Sep 17 00:00:00 2001 From: Pan Zhang Date: Wed, 18 Dec 2019 11:50:08 +0800 Subject: [PATCH] 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 Signed-off-by: Alex Deucher --- drivers/gpu/drm/radeon/atombios_i2c.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/drivers/gpu/drm/radeon/atombios_i2c.c b/drivers/gpu/drm/radeon/atombios_i2c.c index a570ce40af19..ab4d21072191 100644 --- a/drivers/gpu/drm/radeon/atombios_i2c.c +++ b/drivers/gpu/drm/radeon/atombios_i2c.c @@ -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; }