tree: git://people.freedesktop.org/~agd5f/linux.git drm-next-5.2-wip
head: 940d104240cd069a88f089f91299ac9bf4a154d1
commit: 2bec3b50c9c5be65ac4800d57ace6fc3b2d82136 [230/300] drm/amd/display:
Respect aux return values
smatch warnings:
drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_aux.c:514
dce_aux_transfer_with_retries() error: uninitialized symbol 'operation_result'.
git remote add radeon-alex git://people.freedesktop.org/~agd5f/linux.git
git remote update radeon-alex
git checkout 2bec3b50c9c5be65ac4800d57ace6fc3b2d82136
vim +/operation_result +514
drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_aux.c
eae5ffa9 David Francis 2018-11-29 493
eae5ffa9 David Francis 2018-11-29 494 bool
dce_aux_transfer_with_retries(struct ddc_service *ddc,
eae5ffa9 David Francis 2018-11-29 495 struct aux_payload
*payload)
eae5ffa9 David Francis 2018-11-29 496 {
eae5ffa9 David Francis 2018-11-29 497 int i, ret = 0;
eae5ffa9 David Francis 2018-11-29 498 uint8_t reply;
eae5ffa9 David Francis 2018-11-29 499 bool payload_reply = true;
2bec3b50 Thomas Lim 2019-01-16 500 enum
aux_channel_operation_result operation_result;
2bec3b50 Thomas Lim 2019-01-16 501 int aux_ack_retries = 0,
2bec3b50 Thomas Lim 2019-01-16 502 aux_defer_retries = 0,
2bec3b50 Thomas Lim 2019-01-16 503 aux_i2c_defer_retries =
0,
2bec3b50 Thomas Lim 2019-01-16 504 aux_timeout_retries = 0,
2bec3b50 Thomas Lim 2019-01-16 505
aux_invalid_reply_retries = 0;
eae5ffa9 David Francis 2018-11-29 506
eae5ffa9 David Francis 2018-11-29 507 if (!payload->reply) {
eae5ffa9 David Francis 2018-11-29 508 payload_reply = false;
eae5ffa9 David Francis 2018-11-29 509 payload->reply = &reply;
eae5ffa9 David Francis 2018-11-29 510 }
eae5ffa9 David Francis 2018-11-29 511
2bec3b50 Thomas Lim 2019-01-16 512 for (i = 0; i <
AUX_MAX_RETRIES; i++) {
2bec3b50 Thomas Lim 2019-01-16 513 ret =
dce_aux_transfer_raw(ddc, payload, &operation_result);
^^^^^^^^^^^^^^^^^^^^^^^^^^
My guess is that this function can fail, but I haven't looked at the
code.
2bec3b50 Thomas Lim 2019-01-16 @514 switch
(operation_result) {
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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