[PATCH (set 1) 00/20] Rid W=1 warnings from GPU

[PATCH (set 1) 00/20] Rid W=1 warnings from GPU

[Lee Jones]

This set is part of a larger effort attempting to clean-up W=1
kernel builds, which are currently overwhelmingly riddled with
niggly little warnings.

Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: amd-gfx@lists.freedesktop.org
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Danilo Krummrich <dakr@redhat.com>
Cc: David Airlie <airlied@gmail.com>
Cc: dri-devel@lists.freedesktop.org
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Gourav Samaiya <gsamaiya@nvidia.com>
Cc: Hawking Zhang <Hawking.Zhang@amd.com>
Cc: Hyun Kwon <hyun.kwon@xilinx.com>
Cc: Jerome Glisse <glisse@freedesktop.org>
Cc: Jonathan Hunter <jonathanh@nvidia.com>
Cc: Karol Herbst <kherbst@redhat.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: linaro-mm-sig@lists.linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-media@vger.kernel.org
Cc: linux-tegra@vger.kernel.org
Cc: Luben Tuikov <luben.tuikov@amd.com>
Cc: Lyude Paul <lyude@redhat.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: "Maíra Canal" <mairacanal@riseup.net>
Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Mikko Perttunen <mperttunen@nvidia.com>
Cc: nouveau@lists.freedesktop.org
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Shashank Sharma <shashank.sharma@amd.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Stanley Yang <Stanley.Yang@amd.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>

Lee Jones (20):
  drm/xlnx/zynqmp_disp: Use correct kerneldoc formatting in zynqmp_disp
  drm/nouveau/nvkm/subdev/acr/lsfw: Remove unused variable 'loc'
  drm/nouveau/nvkm/subdev/bios/init: Demote a bunch of kernel-doc abuses
  drm/nouveau/nvkm/subdev/volt/gk20a: Demote kerneldoc abuses
  drm/nouveau/nvkm/engine/gr/gf100: Demote kerneldoc abuse
  drm/nouveau/dispnv04/crtc: Demote kerneldoc abuses
  drm/radeon/radeon_ttm: Remove unused variable 'rbo' from
    radeon_bo_move()
  drm/amd/amdgpu/sdma_v6_0: Demote a bunch of half-completed function
    headers
  drm/tests/drm_kunit_helpers: Place correct function name in the
    comment header
  drm/scheduler/sched_main: Provide short description of missing param
    'result'
  drm/amd/amdgpu/amdgpu_doorbell_mgr: Correct misdocumented param
    'doorbell_index'
  drm/amd/amdgpu/amdgpu_device: Provide suitable description for param
    'xcc_id'
  drm/tests/drm_kunit_helpers: Correct possible double-entry typo in
    'ddrm_kunit_helper_acquire_ctx_alloc'
  drm/imx/ipuv3/imx-ldb: Increase buffer size to ensure all possible
    values can be stored
  drm/tegra/hub: Increase buffer size to ensure all possible values can
    be stored
  drm/drm_connector: Provide short description of param
    'supported_colorspaces'
  drm/amd/amdgpu/amdgpu_ras: Increase buffer size to account for all
    possible values
  drm/drm_gpuva_mgr: Remove set but unused variable 'prev'
  drm/amd/amdgpu/amdgpu_sdma: Increase buffer size to account for all
    possible values
  drm/amd/amdgpu/imu_v11_0: Increase buffer size to ensure all possible
    values can be stored

 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c    |   1 +
 .../gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c  |   2 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h       |   2 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c      |   2 +-
 drivers/gpu/drm/amd/amdgpu/imu_v11_0.c        |   2 +-
 drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c        |   8 +-
 drivers/gpu/drm/drm_connector.c               |   2 +
 drivers/gpu/drm/drm_gpuva_mgr.c               |  10 +-
 drivers/gpu/drm/imx/ipuv3/imx-ldb.c           |   2 +-
 drivers/gpu/drm/nouveau/dispnv04/crtc.c       |   4 +-
 .../gpu/drm/nouveau/nvkm/engine/gr/gf100.c    |   2 +-
 .../gpu/drm/nouveau/nvkm/subdev/acr/lsfw.c    |   3 +-
 .../gpu/drm/nouveau/nvkm/subdev/bios/init.c   | 136 +++++++++---------
 .../gpu/drm/nouveau/nvkm/subdev/volt/gk20a.c  |   4 +-
 drivers/gpu/drm/radeon/radeon_ttm.c           |   2 -
 drivers/gpu/drm/scheduler/sched_main.c        |   1 +
 drivers/gpu/drm/tegra/hub.c                   |   2 +-
 drivers/gpu/drm/tests/drm_kunit_helpers.c     |   2 +-
 drivers/gpu/drm/xlnx/zynqmp_disp.c            |   6 +-
 19 files changed, 96 insertions(+), 97 deletions(-)

-- 
2.42.0.rc1.204.g551eb34607-goog

[PATCH 07/20] drm/radeon/radeon_ttm: Remove unused variable 'rbo' from radeon_bo_move()

[Lee Jones]

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/radeon/radeon_ttm.c: In function ‘radeon_bo_move’:
 drivers/gpu/drm/radeon/radeon_ttm.c:201:27: warning: variable ‘rbo’ set but not used [-Wunused-but-set-variable]

Signed-off-by: Lee Jones <lee@kernel.org>
---
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Jerome Glisse <glisse@freedesktop.org>
Cc: amd-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
---
 drivers/gpu/drm/radeon/radeon_ttm.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
index 4eb83ccc4906a..de4e6d78f1e12 100644
--- a/drivers/gpu/drm/radeon/radeon_ttm.c
+++ b/drivers/gpu/drm/radeon/radeon_ttm.c
@@ -197,7 +197,6 @@ static int radeon_bo_move(struct ttm_buffer_object *bo, bool evict,
 {
 	struct ttm_resource *old_mem = bo->resource;
 	struct radeon_device *rdev;
-	struct radeon_bo *rbo;
 	int r;
 
 	if (new_mem->mem_type == TTM_PL_TT) {
@@ -210,7 +209,6 @@ static int radeon_bo_move(struct ttm_buffer_object *bo, bool evict,
 	if (r)
 		return r;
 
-	rbo = container_of(bo, struct radeon_bo, tbo);
 	rdev = radeon_get_rdev(bo->bdev);
 	if (!old_mem || (old_mem->mem_type == TTM_PL_SYSTEM &&
 			 bo->ttm == NULL)) {
-- 
2.42.0.rc1.204.g551eb34607-goog

[PATCH 08/20] drm/amd/amdgpu/sdma_v6_0: Demote a bunch of half-completed function headers

[Lee Jones]

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c:248: warning: Function parameter or member 'job' not described in 'sdma_v6_0_ring_emit_ib'
 drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c:248: warning: Function parameter or member 'flags' not described in 'sdma_v6_0_ring_emit_ib'
 drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c:945: warning: Function parameter or member 'timeout' not described in 'sdma_v6_0_ring_test_ib'
 drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c:1124: warning: Function parameter or member 'ring' not described in 'sdma_v6_0_ring_pad_ib'
 drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c:1175: warning: Function parameter or member 'vmid' not described in 'sdma_v6_0_ring_emit_vm_flush'
 drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c:1175: warning: Function parameter or member 'pd_addr' not described in 'sdma_v6_0_ring_emit_vm_flush'

Cc: linaro-mm-sig@lists.linaro.org
---
Signed-off-by: Lee Jones <lee@kernel.org>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Stanley Yang <Stanley.Yang@amd.com>
Cc: amd-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Cc: linux-media@vger.kernel.org
---
 drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c
index 45be0af2570b2..0e25b6fb13404 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c
@@ -234,7 +234,7 @@ static void sdma_v6_0_ring_insert_nop(struct amdgpu_ring *ring, uint32_t count)
 			amdgpu_ring_write(ring, ring->funcs->nop);
 }
 
-/**
+/*
  * sdma_v6_0_ring_emit_ib - Schedule an IB on the DMA engine
  *
  * @ring: amdgpu ring pointer
@@ -937,7 +937,7 @@ static int sdma_v6_0_ring_test_ring(struct amdgpu_ring *ring)
 	return r;
 }
 
-/**
+/*
  * sdma_v6_0_ring_test_ib - test an IB on the DMA engine
  *
  * @ring: amdgpu_ring structure holding ring information
@@ -1119,7 +1119,7 @@ static void sdma_v6_0_vm_set_pte_pde(struct amdgpu_ib *ib,
 	ib->ptr[ib->length_dw++] = count - 1; /* number of entries */
 }
 
-/**
+/*
  * sdma_v6_0_ring_pad_ib - pad the IB
  * @ib: indirect buffer to fill with padding
  * @ring: amdgpu ring pointer
@@ -1168,7 +1168,7 @@ static void sdma_v6_0_ring_emit_pipeline_sync(struct amdgpu_ring *ring)
 			  SDMA_PKT_POLL_REGMEM_DW5_INTERVAL(4)); /* retry count, poll interval */
 }
 
-/**
+/*
  * sdma_v6_0_ring_emit_vm_flush - vm flush using sDMA
  *
  * @ring: amdgpu_ring pointer
-- 
2.42.0.rc1.204.g551eb34607-goog

[PATCH 11/20] drm/amd/amdgpu/amdgpu_doorbell_mgr: Correct misdocumented param 'doorbell_index'

[Lee Jones]

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c:123: warning: Function parameter or member 'doorbell_index' not described in 'amdgpu_doorbell_index_on_bar'
 drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c:123: warning: Excess function parameter 'db_index' description in 'amdgpu_doorbell_index_on_bar'

Signed-off-by: Lee Jones <lee@kernel.org>
---
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Shashank Sharma <shashank.sharma@amd.com>
Cc: amd-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c
index da4be0bbb4466..d0249ada91d30 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c
@@ -113,7 +113,7 @@ void amdgpu_mm_wdoorbell64(struct amdgpu_device *adev, u32 index, u64 v)
  *
  * @adev: amdgpu_device pointer
  * @db_bo: doorbell object's bo
- * @db_index: doorbell relative index in this doorbell object
+ * @doorbell_index: doorbell relative index in this doorbell object
  *
  * returns doorbell's absolute index in BAR
  */
-- 
2.42.0.rc1.204.g551eb34607-goog

[PATCH 12/20] drm/amd/amdgpu/amdgpu_device: Provide suitable description for param 'xcc_id'

[Lee Jones]

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c:516: warning: Function parameter or member 'xcc_id' not described in 'amdgpu_mm_wreg_mmio_rlc'

Signed-off-by: Lee Jones <lee@kernel.org>
---
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: amd-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index e77f048c99d85..d4f0e4327dd3f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -507,6 +507,7 @@ void amdgpu_device_wreg(struct amdgpu_device *adev,
  * @adev: amdgpu_device pointer
  * @reg: mmio/rlc register
  * @v: value to write
+ * @xcc_id: xcc accelerated compute core id
  *
  * this function is invoked only for the debugfs register access
  */
-- 
2.42.0.rc1.204.g551eb34607-goog

[PATCH 17/20] drm/amd/amdgpu/amdgpu_ras: Increase buffer size to account for all possible values

[Lee Jones]

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c: In function ‘amdgpu_ras_sysfs_create’:
 drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c:1406:20: warning: ‘_err_count’ directive output may be truncated writing 10 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
 drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c:1405:9: note: ‘snprintf’ output between 11 and 42 bytes into a destination of size 32

Signed-off-by: Lee Jones <lee@kernel.org>
---
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Hawking Zhang <Hawking.Zhang@amd.com>
Cc: amd-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h
index ffb49b2d533ad..7999d202c9bc5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h
@@ -436,7 +436,7 @@ struct amdgpu_ras {
 };
 
 struct ras_fs_data {
-	char sysfs_name[32];
+	char sysfs_name[48];
 	char debugfs_name[32];
 };
 
-- 
2.42.0.rc1.204.g551eb34607-goog

[PATCH 19/20] drm/amd/amdgpu/amdgpu_sdma: Increase buffer size to account for all possible values

[Lee Jones]

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c: In function ‘amdgpu_sdma_init_microcode’:
 drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c:217:64: warning: ‘.bin’ directive output may be truncated writing 4 bytes into a region of size between 0 and 32 [-Wformat-truncation=]
 drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c:217:17: note: ‘snprintf’ output between 13 and 52 bytes into a destination of size 40
 drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c:215:66: warning: ‘snprintf’ output may be truncated before the last format character [-Wformat-truncation=]
 drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c:215:17: note: ‘snprintf’ output between 12 and 41 bytes into a destination of size 40

Signed-off-by: Lee Jones <lee@kernel.org>
---
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: amd-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c
index e2b9392d7f0de..572f861e3f706 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c
@@ -208,7 +208,7 @@ int amdgpu_sdma_init_microcode(struct amdgpu_device *adev,
 	const struct sdma_firmware_header_v2_0 *sdma_hdr;
 	uint16_t version_major;
 	char ucode_prefix[30];
-	char fw_name[40];
+	char fw_name[52];
 
 	amdgpu_ucode_ip_version_decode(adev, SDMA0_HWIP, ucode_prefix, sizeof(ucode_prefix));
 	if (instance == 0)
-- 
2.42.0.rc1.204.g551eb34607-goog

[PATCH 20/20] drm/amd/amdgpu/imu_v11_0: Increase buffer size to ensure all possible values can be stored

[Lee Jones]

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/amd/amdgpu/imu_v11_0.c: In function ‘imu_v11_0_init_microcode’:
 drivers/gpu/drm/amd/amdgpu/imu_v11_0.c:52:54: warning: ‘_imu.bin’ directive output may be truncated writing 8 bytes into a region of size between 4 and 33 [-Wformat-truncation=]
 drivers/gpu/drm/amd/amdgpu/imu_v11_0.c:52:9: note: ‘snprintf’ output between 16 and 45 bytes into a destination of size 40

Signed-off-by: Lee Jones <lee@kernel.org>
---
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: amd-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
---
 drivers/gpu/drm/amd/amdgpu/imu_v11_0.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/imu_v11_0.c b/drivers/gpu/drm/amd/amdgpu/imu_v11_0.c
index 4ab90c7852c3e..ca123ff553477 100644
--- a/drivers/gpu/drm/amd/amdgpu/imu_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/imu_v11_0.c
@@ -39,7 +39,7 @@ MODULE_FIRMWARE("amdgpu/gc_11_0_4_imu.bin");
 
 static int imu_v11_0_init_microcode(struct amdgpu_device *adev)
 {
-	char fw_name[40];
+	char fw_name[45];
 	char ucode_prefix[30];
 	int err;
 	const struct imu_firmware_header_v1_0 *imu_hdr;
-- 
2.42.0.rc1.204.g551eb34607-goog

RE: [PATCH 11/20] drm/amd/amdgpu/amdgpu_doorbell_mgr: Correct misdocumented param 'doorbell_index'

[Sharma, Shashank]

[AMD Official Use Only - General]

Reviewed-by: : Shashank Sharma <shashank.sharma@amd.com>

Regards
Shashank
-----Original Message-----
From: Lee Jones <lee@kernel.org>
Sent: Thursday, August 24, 2023 9:37 AM
To: lee@kernel.org
Cc: linux-kernel@vger.kernel.org; Deucher, Alexander <Alexander.Deucher@amd.com>; Koenig, Christian <Christian.Koenig@amd.com>; Pan, Xinhui <Xinhui.Pan@amd.com>; David Airlie <airlied@gmail.com>; Daniel Vetter <daniel@ffwll.ch>; Sharma, Shashank <Shashank.Sharma@amd.com>; amd-gfx@lists.freedesktop.org; dri-devel@lists.freedesktop.org
Subject: [PATCH 11/20] drm/amd/amdgpu/amdgpu_doorbell_mgr: Correct misdocumented param 'doorbell_index'

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c:123: warning: Function parameter or member 'doorbell_index' not described in 'amdgpu_doorbell_index_on_bar'
 drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c:123: warning: Excess function parameter 'db_index' description in 'amdgpu_doorbell_index_on_bar'

Signed-off-by: Lee Jones <lee@kernel.org>
---
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Shashank Sharma <shashank.sharma@amd.com>
Cc: amd-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c
index da4be0bbb4466..d0249ada91d30 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c
@@ -113,7 +113,7 @@ void amdgpu_mm_wdoorbell64(struct amdgpu_device *adev, u32 index, u64 v)
  *
  * @adev: amdgpu_device pointer
  * @db_bo: doorbell object's bo
- * @db_index: doorbell relative index in this doorbell object
+ * @doorbell_index: doorbell relative index in this doorbell object
  *
  * returns doorbell's absolute index in BAR
  */
--
2.42.0.rc1.204.g551eb34607-goog

Re: [PATCH (set 1) 00/20] Rid W=1 warnings from GPU

[Maxime Ripard]

On Thu, 24 Aug 2023 08:36:45 +0100, Lee Jones wrote:
> This set is part of a larger effort attempting to clean-up W=1
> kernel builds, which are currently overwhelmingly riddled with
> niggly little warnings.
> 
> Cc: Alex Deucher <alexander.deucher@amd.com>
> Cc: amd-gfx@lists.freedesktop.org
> Cc: Ben Skeggs <bskeggs@redhat.com>
> Cc: "Christian König" <christian.koenig@amd.com>
> Cc: Daniel Vetter <daniel@ffwll.ch>
> Cc: Danilo Krummrich <dakr@redhat.com>
> Cc: David Airlie <airlied@gmail.com>
> Cc: dri-devel@lists.freedesktop.org
> Cc: Fabio Estevam <festevam@gmail.com>
> Cc: Gourav Samaiya <gsamaiya@nvidia.com>
> Cc: Hawking Zhang <Hawking.Zhang@amd.com>
> Cc: Hyun Kwon <hyun.kwon@xilinx.com>
> Cc: Jerome Glisse <glisse@freedesktop.org>
> Cc: Jonathan Hunter <jonathanh@nvidia.com>
> Cc: Karol Herbst <kherbst@redhat.com>
> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> Cc: linaro-mm-sig@lists.linaro.org
> Cc: linux-arm-kernel@lists.infradead.org
> Cc: linux-media@vger.kernel.org
> Cc: linux-tegra@vger.kernel.org
> Cc: Luben Tuikov <luben.tuikov@amd.com>
> Cc: Lyude Paul <lyude@redhat.com>
> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
> Cc: "Maíra Canal" <mairacanal@riseup.net>
> Cc: Mario Limonciello <mario.limonciello@amd.com>
> Cc: Maxime Ripard <mripard@kernel.org>
> Cc: Michal Simek <michal.simek@xilinx.com>
> Cc: Mikko Perttunen <mperttunen@nvidia.com>
> Cc: nouveau@lists.freedesktop.org
> Cc: NXP Linux Team <linux-imx@nxp.com>
> Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
> Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
> Cc: Philipp Zabel <p.zabel@pengutronix.de>
> Cc: Sascha Hauer <s.hauer@pengutronix.de>
> Cc: Shashank Sharma <shashank.sharma@amd.com>
> Cc: Shawn Guo <shawnguo@kernel.org>
> Cc: Stanley Yang <Stanley.Yang@amd.com>
> Cc: Sumit Semwal <sumit.semwal@linaro.org>
> Cc: Thierry Reding <thierry.reding@gmail.com>
> Cc: Thomas Zimmermann <tzimmermann@suse.de>
> 
> [...]

Applied to drm/drm-misc (drm-misc-fixes).

Thanks!
Maxime

Re: [PATCH (set 1) 00/20] Rid W=1 warnings from GPU

[Maxime Ripard]

[-- Attachment #1: Type: text/plain, Size: 2365 bytes --]

Hi,

On Thu, Aug 24, 2023 at 10:59:54AM +0200, Maxime Ripard wrote:
> On Thu, 24 Aug 2023 08:36:45 +0100, Lee Jones wrote:
> > This set is part of a larger effort attempting to clean-up W=1
> > kernel builds, which are currently overwhelmingly riddled with
> > niggly little warnings.
> > 
> > Cc: Alex Deucher <alexander.deucher@amd.com>
> > Cc: amd-gfx@lists.freedesktop.org
> > Cc: Ben Skeggs <bskeggs@redhat.com>
> > Cc: "Christian König" <christian.koenig@amd.com>
> > Cc: Daniel Vetter <daniel@ffwll.ch>
> > Cc: Danilo Krummrich <dakr@redhat.com>
> > Cc: David Airlie <airlied@gmail.com>
> > Cc: dri-devel@lists.freedesktop.org
> > Cc: Fabio Estevam <festevam@gmail.com>
> > Cc: Gourav Samaiya <gsamaiya@nvidia.com>
> > Cc: Hawking Zhang <Hawking.Zhang@amd.com>
> > Cc: Hyun Kwon <hyun.kwon@xilinx.com>
> > Cc: Jerome Glisse <glisse@freedesktop.org>
> > Cc: Jonathan Hunter <jonathanh@nvidia.com>
> > Cc: Karol Herbst <kherbst@redhat.com>
> > Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> > Cc: linaro-mm-sig@lists.linaro.org
> > Cc: linux-arm-kernel@lists.infradead.org
> > Cc: linux-media@vger.kernel.org
> > Cc: linux-tegra@vger.kernel.org
> > Cc: Luben Tuikov <luben.tuikov@amd.com>
> > Cc: Lyude Paul <lyude@redhat.com>
> > Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
> > Cc: "Maíra Canal" <mairacanal@riseup.net>
> > Cc: Mario Limonciello <mario.limonciello@amd.com>
> > Cc: Maxime Ripard <mripard@kernel.org>
> > Cc: Michal Simek <michal.simek@xilinx.com>
> > Cc: Mikko Perttunen <mperttunen@nvidia.com>
> > Cc: nouveau@lists.freedesktop.org
> > Cc: NXP Linux Team <linux-imx@nxp.com>
> > Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
> > Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
> > Cc: Philipp Zabel <p.zabel@pengutronix.de>
> > Cc: Sascha Hauer <s.hauer@pengutronix.de>
> > Cc: Shashank Sharma <shashank.sharma@amd.com>
> > Cc: Shawn Guo <shawnguo@kernel.org>
> > Cc: Stanley Yang <Stanley.Yang@amd.com>
> > Cc: Sumit Semwal <sumit.semwal@linaro.org>
> > Cc: Thierry Reding <thierry.reding@gmail.com>
> > Cc: Thomas Zimmermann <tzimmermann@suse.de>
> > 
> > [...]
> 
> Applied to drm/drm-misc (drm-misc-fixes).

I got confused with b4 usage, but that wasn't actually applied. Only the
three patches I explicitly mentioned were, sorry for the confusion.

Maxime

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Re: [PATCH (set 1) 00/20] Rid W=1 warnings from GPU

[Jani Nikula]

On Thu, 24 Aug 2023, Lee Jones <lee@kernel.org> wrote:
> This set is part of a larger effort attempting to clean-up W=1
> kernel builds, which are currently overwhelmingly riddled with
> niggly little warnings.

The next question is, how do we keep it W=1 clean going forward?

Most people don't use W=1 because it's too noisy, so it's a bit of a
catch-22.

In i915, we enable a lot of W=1 warnings using subdir-ccflags-y in our
Makefile. For CI/developer use we also enable kernel-doc warnings by
default.

Should we start enabling some of those warning flags in drm/Makefile to
to keep the entire subsystem warning free?


BR,
Jani.


-- 
Jani Nikula, Intel Open Source Graphics Center

Re: [PATCH (set 1) 00/20] Rid W=1 warnings from GPU

[Maxime Ripard]

[-- Attachment #1: Type: text/plain, Size: 871 bytes --]

On Thu, Aug 24, 2023 at 12:03:20PM +0300, Jani Nikula wrote:
> On Thu, 24 Aug 2023, Lee Jones <lee@kernel.org> wrote:
> > This set is part of a larger effort attempting to clean-up W=1
> > kernel builds, which are currently overwhelmingly riddled with
> > niggly little warnings.
> 
> The next question is, how do we keep it W=1 clean going forward?
> 
> Most people don't use W=1 because it's too noisy, so it's a bit of a
> catch-22.
> 
> In i915, we enable a lot of W=1 warnings using subdir-ccflags-y in our
> Makefile. For CI/developer use we also enable kernel-doc warnings by
> default.
> 
> Should we start enabling some of those warning flags in drm/Makefile to
> to keep the entire subsystem warning free?

I think that's a good idea. At least the documentation fixes I just
merged could have been easily caught before submission.

Maxime

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Re: [PATCH (set 1) 00/20] Rid W=1 warnings from GPU

[Lee Jones]

On Thu, 24 Aug 2023, Jani Nikula wrote:

> On Thu, 24 Aug 2023, Lee Jones <lee@kernel.org> wrote:
> > This set is part of a larger effort attempting to clean-up W=1
> > kernel builds, which are currently overwhelmingly riddled with
> > niggly little warnings.
> 
> The next question is, how do we keep it W=1 clean going forward?

My plan was to fix them all, then move each warning to W=0.

Arnd recently submitted a set doing just that for a bunch of them.

https://lore.kernel.org/all/20230811140327.3754597-1-arnd@kernel.org/

I like to think a bunch of this is built on top of my previous efforts.

GPU is a particularly tricky though - the warnings seem to come in faster
than I can squash them.  Maybe the maintainers can find a way to test
new patches on merge?

> Most people don't use W=1 because it's too noisy, so it's a bit of a
> catch-22.
> 
> In i915, we enable a lot of W=1 warnings using subdir-ccflags-y in our
> Makefile. For CI/developer use we also enable kernel-doc warnings by
> default.
> 
> Should we start enabling some of those warning flags in drm/Makefile to
> to keep the entire subsystem warning free?

That would we awesome!  We'd just need buy-in.

-- 
Lee Jones [李琼斯]

Re: [PATCH (set 1) 00/20] Rid W=1 warnings from GPU

[Lee Jones]

On Thu, 24 Aug 2023, Lee Jones wrote:

> On Thu, 24 Aug 2023, Jani Nikula wrote:
> 
> > On Thu, 24 Aug 2023, Lee Jones <lee@kernel.org> wrote:
> > > This set is part of a larger effort attempting to clean-up W=1
> > > kernel builds, which are currently overwhelmingly riddled with
> > > niggly little warnings.
> > 
> > The next question is, how do we keep it W=1 clean going forward?
> 
> My plan was to fix them all, then move each warning to W=0.

Some history:

- Starting with v5.8-rc1:       18867
- 2020-07-01:                   18089
- 2020-07-07:                   17288
- 2020-07-17:                   15762
- 2020-07-20:                   15724
- 2020-07-23:                   15116
- 2020-08-12:                   15184
- 2020-10-19:                   10909
- 2020-11-04:                    9385
- 2021-01-04:                    5478
- 2021-01-12                     4749
- 2021-01-29                     4911
- 2021-04-07                     3594
- 2021-05-20                     2938
- 2021-07-01                     2587
- 2023-02-10                     2587
- 2023-08-22                     1650

> Arnd recently submitted a set doing just that for a bunch of them.
> 
> https://lore.kernel.org/all/20230811140327.3754597-1-arnd@kernel.org/
> 
> I like to think a bunch of this is built on top of my previous efforts.
> 
> GPU is a particularly tricky though - the warnings seem to come in faster
> than I can squash them.  Maybe the maintainers can find a way to test
> new patches on merge?
> 
> > Most people don't use W=1 because it's too noisy, so it's a bit of a
> > catch-22.
> > 
> > In i915, we enable a lot of W=1 warnings using subdir-ccflags-y in our
> > Makefile. For CI/developer use we also enable kernel-doc warnings by
> > default.
> > 
> > Should we start enabling some of those warning flags in drm/Makefile to
> > to keep the entire subsystem warning free?
> 
> That would we awesome!  We'd just need buy-in.

-- 
Lee Jones [李琼斯]

Re: [PATCH (set 1) 00/20] Rid W=1 warnings from GPU

[Lee Jones]

On Thu, 24 Aug 2023, Maxime Ripard wrote:

> Hi,
> 
> On Thu, Aug 24, 2023 at 10:59:54AM +0200, Maxime Ripard wrote:
> > On Thu, 24 Aug 2023 08:36:45 +0100, Lee Jones wrote:
> > > This set is part of a larger effort attempting to clean-up W=1
> > > kernel builds, which are currently overwhelmingly riddled with
> > > niggly little warnings.
> > > 
> > > Cc: Alex Deucher <alexander.deucher@amd.com>
> > > Cc: amd-gfx@lists.freedesktop.org
> > > Cc: Ben Skeggs <bskeggs@redhat.com>
> > > Cc: "Christian König" <christian.koenig@amd.com>
> > > Cc: Daniel Vetter <daniel@ffwll.ch>
> > > Cc: Danilo Krummrich <dakr@redhat.com>
> > > Cc: David Airlie <airlied@gmail.com>
> > > Cc: dri-devel@lists.freedesktop.org
> > > Cc: Fabio Estevam <festevam@gmail.com>
> > > Cc: Gourav Samaiya <gsamaiya@nvidia.com>
> > > Cc: Hawking Zhang <Hawking.Zhang@amd.com>
> > > Cc: Hyun Kwon <hyun.kwon@xilinx.com>
> > > Cc: Jerome Glisse <glisse@freedesktop.org>
> > > Cc: Jonathan Hunter <jonathanh@nvidia.com>
> > > Cc: Karol Herbst <kherbst@redhat.com>
> > > Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> > > Cc: linaro-mm-sig@lists.linaro.org
> > > Cc: linux-arm-kernel@lists.infradead.org
> > > Cc: linux-media@vger.kernel.org
> > > Cc: linux-tegra@vger.kernel.org
> > > Cc: Luben Tuikov <luben.tuikov@amd.com>
> > > Cc: Lyude Paul <lyude@redhat.com>
> > > Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
> > > Cc: "Maíra Canal" <mairacanal@riseup.net>
> > > Cc: Mario Limonciello <mario.limonciello@amd.com>
> > > Cc: Maxime Ripard <mripard@kernel.org>
> > > Cc: Michal Simek <michal.simek@xilinx.com>
> > > Cc: Mikko Perttunen <mperttunen@nvidia.com>
> > > Cc: nouveau@lists.freedesktop.org
> > > Cc: NXP Linux Team <linux-imx@nxp.com>
> > > Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
> > > Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
> > > Cc: Philipp Zabel <p.zabel@pengutronix.de>
> > > Cc: Sascha Hauer <s.hauer@pengutronix.de>
> > > Cc: Shashank Sharma <shashank.sharma@amd.com>
> > > Cc: Shawn Guo <shawnguo@kernel.org>
> > > Cc: Stanley Yang <Stanley.Yang@amd.com>
> > > Cc: Sumit Semwal <sumit.semwal@linaro.org>
> > > Cc: Thierry Reding <thierry.reding@gmail.com>
> > > Cc: Thomas Zimmermann <tzimmermann@suse.de>
> > > 
> > > [...]
> > 
> > Applied to drm/drm-misc (drm-misc-fixes).
> 
> I got confused with b4 usage, but that wasn't actually applied. Only the
> three patches I explicitly mentioned were, sorry for the confusion.

:)

Thanks Maxime.

-- 
Lee Jones [李琼斯]

Re: [PATCH (set 1) 00/20] Rid W=1 warnings from GPU

[Hamza Mahfooz]

On 8/24/23 08:07, Lee Jones wrote:
> On Thu, 24 Aug 2023, Jani Nikula wrote:
> 
>> On Thu, 24 Aug 2023, Lee Jones <lee@kernel.org> wrote:
>>> This set is part of a larger effort attempting to clean-up W=1
>>> kernel builds, which are currently overwhelmingly riddled with
>>> niggly little warnings.
>>
>> The next question is, how do we keep it W=1 clean going forward?
> 
> My plan was to fix them all, then move each warning to W=0.
> 
> Arnd recently submitted a set doing just that for a bunch of them.
> 
> https://lore.kernel.org/all/20230811140327.3754597-1-arnd@kernel.org/
> 
> I like to think a bunch of this is built on top of my previous efforts.
> 
> GPU is a particularly tricky though - the warnings seem to come in faster
> than I can squash them.  Maybe the maintainers can find a way to test
> new patches on merge?

I guess on that note, do you know if there is a way to run
`scripts/kernel-doc` on patches instead of whole files? That would make
much easier to block new kernel-doc issues from appearing.

> 
>> Most people don't use W=1 because it's too noisy, so it's a bit of a
>> catch-22.
>>
>> In i915, we enable a lot of W=1 warnings using subdir-ccflags-y in our
>> Makefile. For CI/developer use we also enable kernel-doc warnings by
>> default.
>>
>> Should we start enabling some of those warning flags in drm/Makefile to
>> to keep the entire subsystem warning free?
> 
> That would we awesome!  We'd just need buy-in.
> 
-- 
Hamza

Re: [PATCH (set 1) 00/20] Rid W=1 warnings from GPU

[Lee Jones]

On Thu, 24 Aug 2023, Hamza Mahfooz wrote:

> 
> On 8/24/23 08:07, Lee Jones wrote:
> > On Thu, 24 Aug 2023, Jani Nikula wrote:
> > 
> > > On Thu, 24 Aug 2023, Lee Jones <lee@kernel.org> wrote:
> > > > This set is part of a larger effort attempting to clean-up W=1
> > > > kernel builds, which are currently overwhelmingly riddled with
> > > > niggly little warnings.
> > > 
> > > The next question is, how do we keep it W=1 clean going forward?
> > 
> > My plan was to fix them all, then move each warning to W=0.
> > 
> > Arnd recently submitted a set doing just that for a bunch of them.
> > 
> > https://lore.kernel.org/all/20230811140327.3754597-1-arnd@kernel.org/
> > 
> > I like to think a bunch of this is built on top of my previous efforts.
> > 
> > GPU is a particularly tricky though - the warnings seem to come in faster
> > than I can squash them.  Maybe the maintainers can find a way to test
> > new patches on merge?
> 
> I guess on that note, do you know if there is a way to run
> `scripts/kernel-doc` on patches instead of whole files? That would make
> much easier to block new kernel-doc issues from appearing.

Not off hand.

When I run builds on patches I author, I run them twice concurrently.
Once on the commit I'm basing on and once on the HEAD of my patchset.  I
then diff the two.  So as long as the number of errors and warnings stay
the same or reduce, we're golden.

Perhaps the same method could be used with `kernel-doc`?

-- 
Lee Jones [李琼斯]

Re: [PATCH 07/20] drm/radeon/radeon_ttm: Remove unused variable 'rbo' from radeon_bo_move()

[Alex Deucher]

Applied.  Thanks!

On Thu, Aug 24, 2023 at 3:37 AM Lee Jones <lee@kernel.org> wrote:
>
> Fixes the following W=1 kernel build warning(s):
>
>  drivers/gpu/drm/radeon/radeon_ttm.c: In function ‘radeon_bo_move’:
>  drivers/gpu/drm/radeon/radeon_ttm.c:201:27: warning: variable ‘rbo’ set but not used [-Wunused-but-set-variable]
>
> Signed-off-by: Lee Jones <lee@kernel.org>
> ---
> Cc: Alex Deucher <alexander.deucher@amd.com>
> Cc: "Christian König" <christian.koenig@amd.com>
> Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
> Cc: David Airlie <airlied@gmail.com>
> Cc: Daniel Vetter <daniel@ffwll.ch>
> Cc: Jerome Glisse <glisse@freedesktop.org>
> Cc: amd-gfx@lists.freedesktop.org
> Cc: dri-devel@lists.freedesktop.org
> ---
>  drivers/gpu/drm/radeon/radeon_ttm.c | 2 --
>  1 file changed, 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
> index 4eb83ccc4906a..de4e6d78f1e12 100644
> --- a/drivers/gpu/drm/radeon/radeon_ttm.c
> +++ b/drivers/gpu/drm/radeon/radeon_ttm.c
> @@ -197,7 +197,6 @@ static int radeon_bo_move(struct ttm_buffer_object *bo, bool evict,
>  {
>         struct ttm_resource *old_mem = bo->resource;
>         struct radeon_device *rdev;
> -       struct radeon_bo *rbo;
>         int r;
>
>         if (new_mem->mem_type == TTM_PL_TT) {
> @@ -210,7 +209,6 @@ static int radeon_bo_move(struct ttm_buffer_object *bo, bool evict,
>         if (r)
>                 return r;
>
> -       rbo = container_of(bo, struct radeon_bo, tbo);
>         rdev = radeon_get_rdev(bo->bdev);
>         if (!old_mem || (old_mem->mem_type == TTM_PL_SYSTEM &&
>                          bo->ttm == NULL)) {
> --
> 2.42.0.rc1.204.g551eb34607-goog
>

Re: [PATCH 12/20] drm/amd/amdgpu/amdgpu_device: Provide suitable description for param 'xcc_id'

[Alex Deucher]

Applied.  Thanks!

On Thu, Aug 24, 2023 at 3:38 AM Lee Jones <lee@kernel.org> wrote:
>
> Fixes the following W=1 kernel build warning(s):
>
>  drivers/gpu/drm/amd/amdgpu/amdgpu_device.c:516: warning: Function parameter or member 'xcc_id' not described in 'amdgpu_mm_wreg_mmio_rlc'
>
> Signed-off-by: Lee Jones <lee@kernel.org>
> ---
> Cc: Alex Deucher <alexander.deucher@amd.com>
> Cc: "Christian König" <christian.koenig@amd.com>
> Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
> Cc: David Airlie <airlied@gmail.com>
> Cc: Daniel Vetter <daniel@ffwll.ch>
> Cc: Sumit Semwal <sumit.semwal@linaro.org>
> Cc: amd-gfx@lists.freedesktop.org
> Cc: dri-devel@lists.freedesktop.org
> Cc: linux-media@vger.kernel.org
> Cc: linaro-mm-sig@lists.linaro.org
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> index e77f048c99d85..d4f0e4327dd3f 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> @@ -507,6 +507,7 @@ void amdgpu_device_wreg(struct amdgpu_device *adev,
>   * @adev: amdgpu_device pointer
>   * @reg: mmio/rlc register
>   * @v: value to write
> + * @xcc_id: xcc accelerated compute core id
>   *
>   * this function is invoked only for the debugfs register access
>   */
> --
> 2.42.0.rc1.204.g551eb34607-goog
>

Re: [PATCH 17/20] drm/amd/amdgpu/amdgpu_ras: Increase buffer size to account for all possible values

[Alex Deucher]

Applied.  Thanks!

On Thu, Aug 24, 2023 at 3:38 AM Lee Jones <lee@kernel.org> wrote:
>
> Fixes the following W=1 kernel build warning(s):
>
>  drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c: In function ‘amdgpu_ras_sysfs_create’:
>  drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c:1406:20: warning: ‘_err_count’ directive output may be truncated writing 10 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
>  drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c:1405:9: note: ‘snprintf’ output between 11 and 42 bytes into a destination of size 32
>
> Signed-off-by: Lee Jones <lee@kernel.org>
> ---
> Cc: Alex Deucher <alexander.deucher@amd.com>
> Cc: "Christian König" <christian.koenig@amd.com>
> Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
> Cc: David Airlie <airlied@gmail.com>
> Cc: Daniel Vetter <daniel@ffwll.ch>
> Cc: Hawking Zhang <Hawking.Zhang@amd.com>
> Cc: amd-gfx@lists.freedesktop.org
> Cc: dri-devel@lists.freedesktop.org
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h
> index ffb49b2d533ad..7999d202c9bc5 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h
> @@ -436,7 +436,7 @@ struct amdgpu_ras {
>  };
>
>  struct ras_fs_data {
> -       char sysfs_name[32];
> +       char sysfs_name[48];
>         char debugfs_name[32];
>  };
>
> --
> 2.42.0.rc1.204.g551eb34607-goog
>

Re: [PATCH 19/20] drm/amd/amdgpu/amdgpu_sdma: Increase buffer size to account for all possible values

[Alex Deucher]

Applied.  Thanks!

On Thu, Aug 24, 2023 at 3:38 AM Lee Jones <lee@kernel.org> wrote:
>
> Fixes the following W=1 kernel build warning(s):
>
>  drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c: In function ‘amdgpu_sdma_init_microcode’:
>  drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c:217:64: warning: ‘.bin’ directive output may be truncated writing 4 bytes into a region of size between 0 and 32 [-Wformat-truncation=]
>  drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c:217:17: note: ‘snprintf’ output between 13 and 52 bytes into a destination of size 40
>  drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c:215:66: warning: ‘snprintf’ output may be truncated before the last format character [-Wformat-truncation=]
>  drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c:215:17: note: ‘snprintf’ output between 12 and 41 bytes into a destination of size 40
>
> Signed-off-by: Lee Jones <lee@kernel.org>
> ---
> Cc: Alex Deucher <alexander.deucher@amd.com>
> Cc: "Christian König" <christian.koenig@amd.com>
> Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
> Cc: David Airlie <airlied@gmail.com>
> Cc: Daniel Vetter <daniel@ffwll.ch>
> Cc: amd-gfx@lists.freedesktop.org
> Cc: dri-devel@lists.freedesktop.org
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c
> index e2b9392d7f0de..572f861e3f706 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c
> @@ -208,7 +208,7 @@ int amdgpu_sdma_init_microcode(struct amdgpu_device *adev,
>         const struct sdma_firmware_header_v2_0 *sdma_hdr;
>         uint16_t version_major;
>         char ucode_prefix[30];
> -       char fw_name[40];
> +       char fw_name[52];
>
>         amdgpu_ucode_ip_version_decode(adev, SDMA0_HWIP, ucode_prefix, sizeof(ucode_prefix));
>         if (instance == 0)
> --
> 2.42.0.rc1.204.g551eb34607-goog
>

Re: [PATCH 20/20] drm/amd/amdgpu/imu_v11_0: Increase buffer size to ensure all possible values can be stored

[Alex Deucher]

Applied.  Thanks!

On Thu, Aug 24, 2023 at 3:38 AM Lee Jones <lee@kernel.org> wrote:
>
> Fixes the following W=1 kernel build warning(s):
>
>  drivers/gpu/drm/amd/amdgpu/imu_v11_0.c: In function ‘imu_v11_0_init_microcode’:
>  drivers/gpu/drm/amd/amdgpu/imu_v11_0.c:52:54: warning: ‘_imu.bin’ directive output may be truncated writing 8 bytes into a region of size between 4 and 33 [-Wformat-truncation=]
>  drivers/gpu/drm/amd/amdgpu/imu_v11_0.c:52:9: note: ‘snprintf’ output between 16 and 45 bytes into a destination of size 40
>
> Signed-off-by: Lee Jones <lee@kernel.org>
> ---
> Cc: Alex Deucher <alexander.deucher@amd.com>
> Cc: "Christian König" <christian.koenig@amd.com>
> Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
> Cc: David Airlie <airlied@gmail.com>
> Cc: Daniel Vetter <daniel@ffwll.ch>
> Cc: Mario Limonciello <mario.limonciello@amd.com>
> Cc: amd-gfx@lists.freedesktop.org
> Cc: dri-devel@lists.freedesktop.org
> ---
>  drivers/gpu/drm/amd/amdgpu/imu_v11_0.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/imu_v11_0.c b/drivers/gpu/drm/amd/amdgpu/imu_v11_0.c
> index 4ab90c7852c3e..ca123ff553477 100644
> --- a/drivers/gpu/drm/amd/amdgpu/imu_v11_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/imu_v11_0.c
> @@ -39,7 +39,7 @@ MODULE_FIRMWARE("amdgpu/gc_11_0_4_imu.bin");
>
>  static int imu_v11_0_init_microcode(struct amdgpu_device *adev)
>  {
> -       char fw_name[40];
> +       char fw_name[45];
>         char ucode_prefix[30];
>         int err;
>         const struct imu_firmware_header_v1_0 *imu_hdr;
> --
> 2.42.0.rc1.204.g551eb34607-goog
>

Re: [PATCH 11/20] drm/amd/amdgpu/amdgpu_doorbell_mgr: Correct misdocumented param 'doorbell_index'

[Alex Deucher]

Applied.  Thanks!

On Thu, Aug 24, 2023 at 4:35 AM Sharma, Shashank
<Shashank.Sharma@amd.com> wrote:
>
> [AMD Official Use Only - General]
>
> Reviewed-by: : Shashank Sharma <shashank.sharma@amd.com>
>
> Regards
> Shashank
> -----Original Message-----
> From: Lee Jones <lee@kernel.org>
> Sent: Thursday, August 24, 2023 9:37 AM
> To: lee@kernel.org
> Cc: linux-kernel@vger.kernel.org; Deucher, Alexander <Alexander.Deucher@amd.com>; Koenig, Christian <Christian.Koenig@amd.com>; Pan, Xinhui <Xinhui.Pan@amd.com>; David Airlie <airlied@gmail.com>; Daniel Vetter <daniel@ffwll.ch>; Sharma, Shashank <Shashank.Sharma@amd.com>; amd-gfx@lists.freedesktop.org; dri-devel@lists.freedesktop.org
> Subject: [PATCH 11/20] drm/amd/amdgpu/amdgpu_doorbell_mgr: Correct misdocumented param 'doorbell_index'
>
> Fixes the following W=1 kernel build warning(s):
>
>  drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c:123: warning: Function parameter or member 'doorbell_index' not described in 'amdgpu_doorbell_index_on_bar'
>  drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c:123: warning: Excess function parameter 'db_index' description in 'amdgpu_doorbell_index_on_bar'
>
> Signed-off-by: Lee Jones <lee@kernel.org>
> ---
> Cc: Alex Deucher <alexander.deucher@amd.com>
> Cc: "Christian König" <christian.koenig@amd.com>
> Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
> Cc: David Airlie <airlied@gmail.com>
> Cc: Daniel Vetter <daniel@ffwll.ch>
> Cc: Shashank Sharma <shashank.sharma@amd.com>
> Cc: amd-gfx@lists.freedesktop.org
> Cc: dri-devel@lists.freedesktop.org
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c
> index da4be0bbb4466..d0249ada91d30 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c
> @@ -113,7 +113,7 @@ void amdgpu_mm_wdoorbell64(struct amdgpu_device *adev, u32 index, u64 v)
>   *
>   * @adev: amdgpu_device pointer
>   * @db_bo: doorbell object's bo
> - * @db_index: doorbell relative index in this doorbell object
> + * @doorbell_index: doorbell relative index in this doorbell object
>   *
>   * returns doorbell's absolute index in BAR
>   */
> --
> 2.42.0.rc1.204.g551eb34607-goog
>

Re: [PATCH (set 1) 00/20] Rid W=1 warnings from GPU

[Michel Dänzer]

On 8/24/23 14:07, Lee Jones wrote:
> On Thu, 24 Aug 2023, Jani Nikula wrote:
>> On Thu, 24 Aug 2023, Lee Jones <lee@kernel.org> wrote:
>>> This set is part of a larger effort attempting to clean-up W=1
>>> kernel builds, which are currently overwhelmingly riddled with
>>> niggly little warnings.
>>
>> The next question is, how do we keep it W=1 clean going forward?
> 
> My plan was to fix them all, then move each warning to W=0.
> 
> Arnd recently submitted a set doing just that for a bunch of them.
> 
> https://lore.kernel.org/all/20230811140327.3754597-1-arnd@kernel.org/
> 
> I like to think a bunch of this is built on top of my previous efforts.
> 
> GPU is a particularly tricky though - the warnings seem to come in faster
> than I can squash them.  Maybe the maintainers can find a way to test
> new patches on merge?

One approach for this which has proved effective in Mesa and other projects is to make warnings fatal in CI which must pass for any changes to be merged. There is ongoing work toward introducing this for the DRM subsystem, using gitlab.freedesktop.org CI.


-- 
Earthling Michel Dänzer            |                  https://redhat.com
Libre software enthusiast          |         Mesa and Xwayland developer