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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2018-03-08 11:07:30 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2018-03-08 11:07:30 -0800 |
| commit | c6380ecd8e9bee7aba3d9a5a94b58168244c4a61 (patch) | |
| tree | f8d9522c66e805f638399e094f8e0dfd92584d06 /drivers/gpu/drm/amd/amdgpu/atombios_i2c.c | |
| parent | cdc2466df40f26af60f6b18123069bd52336a80c (diff) | |
| parent | 661e50bc853209e41a5c14a290ca4decc43cbfd1 (diff) | |
Merge tag 'v4.16-rc4' into next
Sync up with mainline to bring in RAVE MFD device core.
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/atombios_i2c.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/atombios_i2c.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_i2c.c b/drivers/gpu/drm/amd/amdgpu/atombios_i2c.c index b374653bd6cf..f9b2ce9a98f3 100644 --- a/drivers/gpu/drm/amd/amdgpu/atombios_i2c.c +++ b/drivers/gpu/drm/amd/amdgpu/atombios_i2c.c @@ -65,8 +65,15 @@ static int amdgpu_atombios_i2c_process_i2c_ch(struct amdgpu_i2c_chan *chan, args.ucRegIndex = buf[0]; if (num) num--; - if (num) - memcpy(&out, &buf[1], num); + if (num) { + if (buf) { + memcpy(&out, &buf[1], num); + } else { + DRM_ERROR("hw i2c: missing buf with num > 1\n"); + r = -EINVAL; + goto done; + } + } args.lpI2CDataOut = cpu_to_le16(out); } else { if (num > ATOM_MAX_HW_I2C_READ) { |