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28e016e02118917e50a667bc72fb80098cf2b460
kernel_google_wahoo/drivers/gpu/drm/amd/amdgpu
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Tuo Li 7ea5848b32 gpu: drm: amd: amdgpu: amdgpu_i2c: fix possible uninitialized-variable access in amdgpu_i2c_router_select_ddc_port() 
[ Upstream commit a211260c34cfadc6068fece8c9e99e0fe1e2a2b6 ]

The variable val is declared without initialization, and its address is
passed to amdgpu_i2c_get_byte(). In this function, the value of val is
accessed in:
  DRM_DEBUG("i2c 0x%02x 0x%02x read failed\n",
       addr, *val);

Also, when amdgpu_i2c_get_byte() returns, val may remain uninitialized,
but it is accessed in:
  val &= ~amdgpu_connector->router.ddc_mux_control_pin;

To fix this possible uninitialized-variable access, initialize val to 0 in
amdgpu_i2c_router_select_ddc_port().

Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Signed-off-by: Tuo Li <islituo@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-09-22 11:41:25 +02:00
..
amdgpu_acpi.c
drm/amdgpu: Notify sbios device ready before send request
2018-03-18 11:17:49 +01:00
amdgpu_acpi.h
drm/amdgpu: add core driver (v4)
2015-06-03 21:03:15 -04:00
amdgpu_afmt.c
drm/amdgpu: add core driver (v4)
2015-06-03 21:03:15 -04:00
amdgpu_amdkfd_gfx_v7.c
drm/amdgpu: Fix SDMA HQD destroy error on gfx_v7
2018-10-20 09:52:33 +02:00
amdgpu_amdkfd_gfx_v8.c
drm/amdgpu: rework sdma structures
2015-10-14 16:16:36 -04:00
amdgpu_amdkfd.c
drm/amdgpu: export reservation_object from dmabuf to ttm (v2)
2015-09-23 17:23:34 -04:00
amdgpu_amdkfd.h
drm/amdgpu: Add amdgpu <--> amdkfd gfx8 interface
2015-07-20 09:16:48 +03:00
amdgpu_atombios.c
drm/amd/display: remove duplicated assignment to grph_obj_type
2020-03-20 09:06:22 +01:00
amdgpu_atombios.h
drm/amdgpu: add core driver (v4)
2015-06-03 21:03:15 -04:00
amdgpu_atpx_handler.c
drm/amdgpu: add a delay after ATPX dGPU power off
2016-08-20 18:09:22 +02:00
amdgpu_benchmark.c
drm/amdgpu: export reservation_object from dmabuf to ttm (v2)
2015-09-23 17:23:34 -04:00
amdgpu_bios.c
drm/amdgpu: Drop unnecessary #include <linux/vga_switcheroo.h>
2015-10-14 16:16:38 -04:00
amdgpu_bo_list.c
drm/amdgpu: Attach exclusive fence to prime exported bo's. (v5)
2016-11-26 09:54:52 +01:00
amdgpu_cgs.c
drm/amdgpu/cgs: remove import_gpu_mem
2015-09-30 12:44:16 -04:00
amdgpu_connectors.c
drm/amdgpu/display: fix ref count leak when pm_runtime_get_sync fails
2020-09-03 11:19:23 +02:00
amdgpu_connectors.h
drm/amdgpu: add core driver (v4)
2015-06-03 21:03:15 -04:00
amdgpu_cs.c
drm/amdgpu: check ring being ready before using
2017-07-05 14:37:19 +02:00
amdgpu_ctx.c
drm/amdgpu: don't oops on failure to load (v2)
2015-11-03 11:15:19 -05:00
amdgpu_device.c
drm/amdgpu: Avoid leaking PM domain on driver unbind (v2)
2018-02-28 10:17:23 +01:00
amdgpu_display.c
drm/amdgpu: restore proper ref count in amdgpu_display_crtc_set_config
2020-10-14 09:46:20 +02:00
amdgpu_dpm.c
drm/amdgpu: change vblank_time's calculation method to reduce computational error.
2016-10-31 04:13:57 -06:00
amdgpu_dpm.h
drm/amdgpu: add core driver (v4)
2015-06-03 21:03:15 -04:00
amdgpu_drv.c
drm/amd/display: fix ref count leak in amdgpu_drm_ioctl
2020-09-03 11:19:23 +02:00
amdgpu_drv.h
drm/amdgpu: merge amdgpu_family.h into amd_shared.h (v2)
2015-08-17 16:50:21 -04:00
amdgpu_encoders.c
drm/amdgpu: add core driver (v4)
2015-06-03 21:03:15 -04:00
amdgpu_fb.c
Merge branch 'drm-next-4.4' of git://people.freedesktop.org/~agd5f/linux into drm-next
2015-11-05 10:57:25 +10:00
amdgpu_fence.c
drm/amdgpu: add kmem cache for amdgpu fence
2015-11-16 11:05:50 -05:00
amdgpu_gart.c
drm/amdgpu: Change GART offset to 64-bit
2016-09-07 08:32:42 +02:00
amdgpu_gds.h
drm/amdgpu: add core driver (v4)
2015-06-03 21:03:15 -04:00
amdgpu_gem.c
drm/amdgpu: fix the lost duplicates checking
2015-12-09 00:18:33 -05:00
amdgpu_gfx.c
drm/amdgpu: add core driver (v4)
2015-06-03 21:03:15 -04:00
amdgpu_gfx.h
drm/amdgpu: add core driver (v4)
2015-06-03 21:03:15 -04:00
amdgpu_i2c.c
gpu: drm: amd: amdgpu: amdgpu_i2c: fix possible uninitialized-variable access in amdgpu_i2c_router_select_ddc_port()
2021-09-22 11:41:25 +02:00
amdgpu_i2c.h
drm/amdgpu: add core driver (v4)
2015-06-03 21:03:15 -04:00
amdgpu_ib.c
drm/amdgpu: record error code when ring test failed
2016-09-07 08:32:42 +02:00
amdgpu_ih.c
drm/amdgpu: export reservation_object from dmabuf to ttm (v2)
2015-09-23 17:23:34 -04:00
amdgpu_ih.h
drm/amdgpu: Implement irq interfaces for CGS
2015-08-17 16:50:09 -04:00
amdgpu_ioc32.c
drm/amdgpu: add core driver (v4)
2015-06-03 21:03:15 -04:00
amdgpu_irq.c
drm/amdgpu: add missing irq.h include
2017-03-26 12:13:18 +02:00
amdgpu_irq.h
drm/amdgpu: Implement irq interfaces for CGS
2015-08-17 16:50:09 -04:00
amdgpu_kms.c
drm/amdgpu: fix ref count leak in amdgpu_driver_open_kms
2020-09-03 11:19:23 +02:00
amdgpu_mn.c
drm/amdgpu: fix issue with overlapping userptrs
2016-03-03 15:07:19 -08:00
amdgpu_mode.h
drm/amdgpu: bump the afmt limit for CZ, ST, Polaris
2016-05-04 14:48:46 -07:00
amdgpu_object.c
drm/drivers: add support for using the arch wc mapping API.
2018-09-09 20:04:36 +02:00
amdgpu_object.h
drm/amdgpu: remove the unnecessary parameter adev for amdgpu_sa_bo_new()
2015-11-16 17:01:32 -05:00
amdgpu_pll.c
drm/amdgpu: add core driver (v4)
2015-06-03 21:03:15 -04:00
amdgpu_pll.h
drm/amdgpu: add core driver (v4)
2015-06-03 21:03:15 -04:00
amdgpu_pm.c
drm/amdgpu/pm: update current crtc info after setting the powerstate
2016-03-09 15:34:51 -08:00
amdgpu_pm.h
drm/amdgpu: add core driver (v4)
2015-06-03 21:03:15 -04:00
amdgpu_prime.c
drm/amdgpu: Attach exclusive fence to prime exported bo's. (v5)
2016-11-26 09:54:52 +01:00
amdgpu_ring.c
drm/amdgpu: move ring_from_fence to common code
2015-10-30 01:54:07 -04:00
amdgpu_sa.c
drm/amdgpu: hold reference to fences in amdgpu_sa_bo_new (v2)
2016-03-03 15:07:19 -08:00
amdgpu_sched.c
drm/amdgpu: fix incorrect mutex usage v3
2015-11-16 11:05:58 -05:00
amdgpu_semaphore.c
drm/amdgpu: remove the unnecessary parameter adev for amdgpu_sa_bo_new()
2015-11-16 17:01:32 -05:00
amdgpu_sync.c
drm/amdgpu: fix lost sync_to if scheduler is enabled.
2016-03-03 15:07:18 -08:00
amdgpu_test.c
drm/amdgpu: export reservation_object from dmabuf to ttm (v2)
2015-09-23 17:23:34 -04:00
amdgpu_trace_points.c
drm/amdgpu: add core driver (v4)
2015-06-03 21:03:15 -04:00
amdgpu_trace.h
drm/amdgpu: add command submission workflow tracepoint
2015-11-16 11:05:57 -05:00
amdgpu_ttm.c
drm/amdgpu: Fix a use-after-free
2021-06-03 08:22:08 +02:00
amdgpu_ucode.c
drm/amdgpu: export reservation_object from dmabuf to ttm (v2)
2015-09-23 17:23:34 -04:00
amdgpu_ucode.h
drm/amdgpu: add core driver (v4)
2015-06-03 21:03:15 -04:00
amdgpu_uvd.c
amdgpu/uvd: add uvd fw version for amdgpu
2016-05-04 14:48:46 -07:00
amdgpu_uvd.h
drm/amdgpu: change uvd ib test to use kernel fence directly
2015-08-17 16:50:51 -04:00
amdgpu_vce.c
drm/amdgpu: when dpm disabled, also need to stop/start vce.
2017-11-08 10:06:29 +01:00
amdgpu_vce.h
drm/amdgpu: use kernel fence for vce ib test
2015-08-17 16:50:52 -04:00
amdgpu_vm.c
drm/amdgpu: Use drm_calloc_large for VM page_tables array
2016-03-09 15:34:56 -08:00
amdgpu.h
drm/amdgpu: Attach exclusive fence to prime exported bo's. (v5)
2016-11-26 09:54:52 +01:00
atom.c
drm/amdgpu: increase atombios cmd timeout
2020-10-01 11:11:53 +02:00
atom.h
drm/amdgpu/atom: add support for new div32 opcodes (v3)
2015-10-14 16:16:24 -04:00
atombios_crtc.c
drm/amdgpu/atom: fix ps allocation size for EnableDispPowerGating
2017-06-29 12:48:52 +02:00
atombios_crtc.h
drm/amdgpu: add core driver (v4)
2015-06-03 21:03:15 -04:00
atombios_dp.c
drm/amdgpu: fix DP mode validation
2016-11-15 07:46:40 +01:00
atombios_dp.h
drm/amdgpu: add core driver (v4)
2015-06-03 21:03:15 -04:00
atombios_encoders.c
drm/amdgpu: support backlight control for UNIPHY3
2016-08-20 18:09:22 +02:00
atombios_encoders.h
drm/amdgpu: add core driver (v4)
2015-06-03 21:03:15 -04:00
atombios_i2c.c
drm/amdgpu: add core driver (v4)
2015-06-03 21:03:15 -04:00
atombios_i2c.h
drm/amdgpu: add core driver (v4)
2015-06-03 21:03:15 -04:00
ci_dpm.c
drm/amdgpu/ci: disable mclk switching for high refresh rates (v2)
2017-06-14 13:16:21 +02:00
ci_dpm.h
drm/amdgpu: Add support for CIK parts
2015-06-03 21:03:17 -04:00
ci_smc.c
drm/amdgpu: Add support for CIK parts
2015-06-03 21:03:17 -04:00
cik_dpm.h
drm/amdgpu: rename amdgpu_ip_funcs to amd_ip_funcs (v2)
2015-06-03 21:03:51 -04:00
cik_ih.c
drm/amdgpu: rename amdgpu_ip_funcs to amd_ip_funcs (v2)
2015-06-03 21:03:51 -04:00
cik_ih.h
drm/amdgpu: rename amdgpu_ip_funcs to amd_ip_funcs (v2)
2015-06-03 21:03:51 -04:00
cik_sdma.c
drm/amdgpu: perform srbm soft reset always on SDMA resume
2020-11-18 18:24:59 +01:00
cik_sdma.h
drm/amdgpu: rename amdgpu_ip_funcs to amd_ip_funcs (v2)
2015-06-03 21:03:51 -04:00
cik.c
drm/amdgpu: check before checking pci bridge registers
2015-10-06 10:43:16 -04:00
cik.h
drm/amdgpu: rename amdgpu_ip_funcs to amd_ip_funcs (v2)
2015-06-03 21:03:51 -04:00
cikd.h
drm/amdgpu: add count field for the SDMA NOP packet v2
2015-09-02 12:21:35 -04:00
clearstate_ci.h
drm/amdgpu: Add support for CIK parts
2015-06-03 21:03:17 -04:00
clearstate_defs.h
…
clearstate_vi.h
drm/amdgpu: Add initial VI support
2015-06-03 21:03:17 -04:00
cz_dpm.c
drm/amdgpu/cz: enable/disable vce dpm even if vce pg is disabled
2016-09-15 08:27:50 +02:00
cz_dpm.h
drm/amdgpu: correct define SMU_EnabledFeatureScoreboard_SclkDpmOn
2015-06-29 11:21:52 -04:00
cz_ih.c
drm/amdgpu: rename amdgpu_ip_funcs to amd_ip_funcs (v2)
2015-06-03 21:03:51 -04:00
cz_ih.h
drm/amdgpu: rename amdgpu_ip_funcs to amd_ip_funcs (v2)
2015-06-03 21:03:51 -04:00
cz_ppsmc.h
drm/amdgpu: Add initial VI support
2015-06-03 21:03:17 -04:00
cz_smc.c
drm/amdgpu: Update SMC/DPM for Stoney
2015-10-21 12:19:46 -04:00
cz_smumgr.h
drm/amdgpu: Add initial VI support
2015-06-03 21:03:17 -04:00
dce_v8_0.c
drm/amdgpu: Make display watermark calculations more accurate
2017-05-25 14:30:10 +02:00
dce_v8_0.h
drm/amdgpu: rename amdgpu_ip_funcs to amd_ip_funcs (v2)
2015-06-03 21:03:51 -04:00
dce_v10_0.c
drm/amdgpu: Make display watermark calculations more accurate
2017-05-25 14:30:10 +02:00
dce_v10_0.h
drm/amdgpu: rename amdgpu_ip_funcs to amd_ip_funcs (v2)
2015-06-03 21:03:51 -04:00
dce_v11_0.c
drm/amdgpu: Make display watermark calculations more accurate
2017-05-25 14:30:10 +02:00
dce_v11_0.h
drm/amdgpu: rename amdgpu_ip_funcs to amd_ip_funcs (v2)
2015-06-03 21:03:51 -04:00
fiji_dpm.c
drm/amdgpu: Add Fiji support to SMC and DPM (v2)
2015-08-17 16:50:26 -04:00
fiji_ppsmc.h
drm/amdgpu: Add Fiji support to SMC and DPM (v2)
2015-08-17 16:50:26 -04:00
fiji_smc.c
drm/amdgpu: export reservation_object from dmabuf to ttm (v2)
2015-09-23 17:23:34 -04:00
fiji_smumgr.h
drm/amdgpu: Add Fiji support to SMC and DPM (v2)
2015-08-17 16:50:26 -04:00
gfx_v7_0.c
drm/amdgpu: fix KV harvesting
2018-03-18 11:17:49 +01:00
gfx_v7_0.h
drm/amdgpu: rename amdgpu_ip_funcs to amd_ip_funcs (v2)
2015-06-03 21:03:51 -04:00
gfx_v8_0.c
drm/amdgpu/gfx8: specify which engine to wait before vm flush
2016-03-09 15:34:51 -08:00
gfx_v8_0.h
drm/amdgpu: rename amdgpu_ip_funcs to amd_ip_funcs (v2)
2015-06-03 21:03:51 -04:00
gmc_v7_0.c
drm/amdgpu/gmc7: add missing mullins case
2016-08-20 18:09:22 +02:00
gmc_v7_0.h
drm/amdgpu: rename amdgpu_ip_funcs to amd_ip_funcs (v2)
2015-06-03 21:03:51 -04:00
gmc_v8_0.c
drm/amdgpu/gmc: use proper register for vram type on Fiji
2016-04-20 15:41:56 +09:00
gmc_v8_0.h
drm/amdgpu: rename amdgpu_ip_funcs to amd_ip_funcs (v2)
2015-06-03 21:03:51 -04:00
iceland_dpm.c
drm/amdgpu/iceland: don't call smu_init on resume
2015-06-10 09:32:25 -04:00
iceland_ih.c
drm/amdgpu: rename amdgpu_ip_funcs to amd_ip_funcs (v2)
2015-06-03 21:03:51 -04:00
iceland_ih.h
drm/amdgpu: rename amdgpu_ip_funcs to amd_ip_funcs (v2)
2015-06-03 21:03:51 -04:00
iceland_sdma_pkt_open.h
drm/amdgpu: add count field for the SDMA NOP packet v2
2015-09-02 12:21:35 -04:00
iceland_smc.c
drm/amdgpu: don't load MEC2 on topaz
2016-03-03 15:07:19 -08:00
iceland_smumgr.h
drm/amdgpu: Add initial VI support
2015-06-03 21:03:17 -04:00
Kconfig
drm/amdgpu: add core driver (v4)
2015-06-03 21:03:15 -04:00
kv_dpm.c
drm/amdgpu: fix array out of bounds
2017-05-02 21:19:48 -07:00
kv_dpm.h
drm/amdgpu: Add support for CIK parts
2015-06-03 21:03:17 -04:00
kv_smc.c
drm/amdgpu: Add support for CIK parts
2015-06-03 21:03:17 -04:00
Makefile
drm/amdgpu: move gmc7 support out of CIK dependency
2016-03-03 15:07:19 -08:00
ObjectID.h
…
ppsmc.h
drm/amdgpu: add ppsmc.h
2015-06-03 21:03:13 -04:00
sdma_v2_4.c
drm/amdgpu: include the right version of gmc header files for iceland
2016-04-12 09:08:59 -07:00
sdma_v2_4.h
drm/amdgpu: rename amdgpu_ip_funcs to amd_ip_funcs (v2)
2015-06-03 21:03:51 -04:00
sdma_v3_0.c
drm/amdgpu: add SDMA support for Stoney (v2)
2015-10-21 12:20:20 -04:00
sdma_v3_0.h
drm/amdgpu: rename amdgpu_ip_funcs to amd_ip_funcs (v2)
2015-06-03 21:03:51 -04:00
smu7_discrete.h
drm/amdgpu: Add support for CIK parts
2015-06-03 21:03:17 -04:00
smu7_fusion.h
drm/amdgpu: Add support for CIK parts
2015-06-03 21:03:17 -04:00
smu7.h
drm/amdgpu: Add support for CIK parts
2015-06-03 21:03:17 -04:00
smu8_fusion.h
drm/amdgpu: Add initial VI support
2015-06-03 21:03:17 -04:00
smu8.h
drm/amdgpu: Add initial VI support
2015-06-03 21:03:17 -04:00
smu_ucode_xfer_cz.h
drm/amdgpu: Add initial VI support
2015-06-03 21:03:17 -04:00
smu_ucode_xfer_vi.h
drm/amdgpu: Add initial VI support
2015-06-03 21:03:17 -04:00
tonga_dpm.c
drm/amdgpu: fix tonga smu resume
2016-03-03 15:07:18 -08:00
tonga_ih.c
drm/amdgpu: rename amdgpu_ip_funcs to amd_ip_funcs (v2)
2015-06-03 21:03:51 -04:00
tonga_ih.h
drm/amdgpu: rename amdgpu_ip_funcs to amd_ip_funcs (v2)
2015-06-03 21:03:51 -04:00
tonga_ppsmc.h
drm/amdgpu: Add initial VI support
2015-06-03 21:03:17 -04:00
tonga_sdma_pkt_open.h
drm/amdgpu: add count field for the SDMA NOP packet v2
2015-09-02 12:21:35 -04:00
tonga_smc.c
drm/amdgpu: export reservation_object from dmabuf to ttm (v2)
2015-09-23 17:23:34 -04:00
tonga_smumgr.h
drm/amdgpu: Add initial VI support
2015-06-03 21:03:17 -04:00
uvd_v4_2.c
drm/amdgpu: remove old lockup detection infrastructure
2015-10-21 11:35:12 -04:00
uvd_v4_2.h
drm/amdgpu: rename amdgpu_ip_funcs to amd_ip_funcs (v2)
2015-06-03 21:03:51 -04:00
uvd_v5_0.c
drm/amdgpu: remove old lockup detection infrastructure
2015-10-21 11:35:12 -04:00
uvd_v5_0.h
drm/amdgpu: rename amdgpu_ip_funcs to amd_ip_funcs (v2)
2015-06-03 21:03:51 -04:00
uvd_v6_0.c
drm/amdgpu: remove old lockup detection infrastructure
2015-10-21 11:35:12 -04:00
uvd_v6_0.h
drm/amdgpu: rename amdgpu_ip_funcs to amd_ip_funcs (v2)
2015-06-03 21:03:51 -04:00
vce_v2_0.c
drm/amdgpu: remove old lockup detection infrastructure
2015-10-21 11:35:12 -04:00
vce_v2_0.h
drm/amdgpu: rename amdgpu_ip_funcs to amd_ip_funcs (v2)
2015-06-03 21:03:51 -04:00
vce_v3_0.c
drm/amdgpu: vce use multiple cache surface starting from stoney
2015-11-20 18:21:04 -05:00
vce_v3_0.h
drm/amdgpu: rename amdgpu_ip_funcs to amd_ip_funcs (v2)
2015-06-03 21:03:51 -04:00
vi_dpm.h
drm/amdgpu: Add Fiji support to SMC and DPM (v2)
2015-08-17 16:50:26 -04:00
vi.c
drm/amdgpu: fix topaz/tonga gmc assignment in 4.4 stable
2016-03-09 15:34:57 -08:00
vi.h
drm/amdgpu: rename amdgpu_ip_funcs to amd_ip_funcs (v2)
2015-06-03 21:03:51 -04:00
vid.h
drm/amdgpu: Add amdgpu <--> amdkfd gfx8 interface
2015-07-20 09:16:48 +03:00