The patch below does not apply to the 6.8-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
Thanks,
Sasha
------------------ original commit in Linus's tree ------------------
From a8edc9cc0b14e3769bbc9b82d00e5e5fc6b5ff0a Mon Sep 17 00:00:00 2001
From: Roman Li <roman.li(a)amd.com>
Date: Tue, 30 Jan 2024 18:07:24 -0500
Subject: [PATCH] drm/amd/display: Fix array-index-out-of-bounds in
dcn35_clkmgr
[Why]
There is a potential memory access violation while
iterating through array of dcn35 clks.
[How]
Limit iteration per array size.
Cc: Mario Limonciello <mario.limonciello(a)amd.com>
Cc: Alex Deucher <alexander.deucher(a)amd.com>
Cc: stable(a)vger.kernel.org
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas(a)amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai(a)amd.com>
Signed-off-by: Roman Li <roman.li(a)amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler(a)amd.com>
Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com>
---
.../amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c
index 36e5bb611fb10..c378b879c76d8 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c
@@ -658,10 +658,13 @@ static void dcn35_clk_mgr_helper_populate_bw_params(struct clk_mgr_internal *clk
struct clk_limit_table_entry def_max = bw_params->clk_table.entries[bw_params->clk_table.num_entries - 1];
uint32_t max_fclk = 0, min_pstate = 0, max_dispclk = 0, max_dppclk = 0;
uint32_t max_pstate = 0, max_dram_speed_mts = 0, min_dram_speed_mts = 0;
+ uint32_t num_memps, num_fclk, num_dcfclk;
int i;
/* Determine min/max p-state values. */
- for (i = 0; i < clock_table->NumMemPstatesEnabled; i++) {
+ num_memps = (clock_table->NumMemPstatesEnabled > NUM_MEM_PSTATE_LEVELS) ? NUM_MEM_PSTATE_LEVELS :
+ clock_table->NumMemPstatesEnabled;
+ for (i = 0; i < num_memps; i++) {
uint32_t dram_speed_mts = calc_dram_speed_mts(&clock_table->MemPstateTable[i]);
if (is_valid_clock_value(dram_speed_mts) && dram_speed_mts > max_dram_speed_mts) {
@@ -673,7 +676,7 @@ static void dcn35_clk_mgr_helper_populate_bw_params(struct clk_mgr_internal *clk
min_dram_speed_mts = max_dram_speed_mts;
min_pstate = max_pstate;
- for (i = 0; i < clock_table->NumMemPstatesEnabled; i++) {
+ for (i = 0; i < num_memps; i++) {
uint32_t dram_speed_mts = calc_dram_speed_mts(&clock_table->MemPstateTable[i]);
if (is_valid_clock_value(dram_speed_mts) && dram_speed_mts < min_dram_speed_mts) {
@@ -702,9 +705,13 @@ static void dcn35_clk_mgr_helper_populate_bw_params(struct clk_mgr_internal *clk
/* Base the clock table on dcfclk, need at least one entry regardless of pmfw table */
ASSERT(clock_table->NumDcfClkLevelsEnabled > 0);
- max_fclk = find_max_clk_value(clock_table->FclkClocks_Freq, clock_table->NumFclkLevelsEnabled);
+ num_fclk = (clock_table->NumFclkLevelsEnabled > NUM_FCLK_DPM_LEVELS) ? NUM_FCLK_DPM_LEVELS :
+ clock_table->NumFclkLevelsEnabled;
+ max_fclk = find_max_clk_value(clock_table->FclkClocks_Freq, num_fclk);
- for (i = 0; i < clock_table->NumDcfClkLevelsEnabled; i++) {
+ num_dcfclk = (clock_table->NumFclkLevelsEnabled > NUM_DCFCLK_DPM_LEVELS) ? NUM_DCFCLK_DPM_LEVELS :
+ clock_table->NumDcfClkLevelsEnabled;
+ for (i = 0; i < num_dcfclk; i++) {
int j;
/* First search defaults for the clocks we don't read using closest lower or equal default dcfclk */
--
2.43.0
The patch below does not apply to the 6.8-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
Thanks,
Sasha
------------------ original commit in Linus's tree ------------------
From b2f26f49e84bea03dddb5f37ff137c97b165107b Mon Sep 17 00:00:00 2001
From: Srinivasan Shanmugam <srinivasan.shanmugam(a)amd.com>
Date: Sat, 13 Jan 2024 14:32:27 +0530
Subject: [PATCH] drm/amd/display: Drop 'acrtc' and add 'new_crtc_state' NULL
check for writeback requests.
Return value of 'to_amdgpu_crtc' which is container_of(...) can't be
null, so it's null check 'acrtc' is dropped.
Fixing the below:
drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:9302 amdgpu_dm_atomic_commit_tail() error: we previously assumed 'acrtc' could be null (see line 9299)
Added 'new_crtc_state' NULL check for function
'drm_atomic_get_new_crtc_state' that retrieves the new state for a CRTC,
while enabling writeback requests.
Cc: stable(a)vger.kernel.org
Cc: Alex Hung <alex.hung(a)amd.com>
Cc: Aurabindo Pillai <aurabindo.pillai(a)amd.com>
Cc: Rodrigo Siqueira <Rodrigo.Siqueira(a)amd.com>
Cc: Hamza Mahfooz <hamza.mahfooz(a)amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam(a)amd.com>
Reviewed-by: Alex Hung <alex.hung(a)amd.com>
Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 36af104e7663c..8623722e954f9 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -9327,10 +9327,10 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state)
if (!new_con_state->writeback_job)
continue;
- new_crtc_state = NULL;
+ new_crtc_state = drm_atomic_get_new_crtc_state(state, &acrtc->base);
- if (acrtc)
- new_crtc_state = drm_atomic_get_new_crtc_state(state, &acrtc->base);
+ if (!new_crtc_state)
+ continue;
if (acrtc->wb_enabled)
continue;
--
2.43.0
The patch below does not apply to the 6.8-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
Thanks,
Sasha
------------------ original commit in Linus's tree ------------------
From b4e05bb1dec53fe28c3c88425aded824498666e5 Mon Sep 17 00:00:00 2001
From: Ilya Bakoulin <ilya.bakoulin(a)amd.com>
Date: Wed, 3 Jan 2024 09:42:04 -0500
Subject: [PATCH] drm/amd/display: Clear OPTC mem select on disable
[Why]
Not clearing the memory select bits prior to OPTC disable can cause DSC
corruption issues when attempting to reuse a memory instance for another
OPTC that enables ODM.
[How]
Clear the memory select bits prior to disabling an OPTC.
Cc: Mario Limonciello <mario.limonciello(a)amd.com>
Cc: Alex Deucher <alexander.deucher(a)amd.com>
Cc: stable(a)vger.kernel.org
Reviewed-by: Charlene Liu <charlene.liu(a)amd.com>
Acked-by: Alex Hung <alex.hung(a)amd.com>
Signed-off-by: Ilya Bakoulin <ilya.bakoulin(a)amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler(a)amd.com>
Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com>
---
drivers/gpu/drm/amd/display/dc/optc/dcn32/dcn32_optc.c | 3 +++
drivers/gpu/drm/amd/display/dc/optc/dcn35/dcn35_optc.c | 3 +++
2 files changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/optc/dcn32/dcn32_optc.c b/drivers/gpu/drm/amd/display/dc/optc/dcn32/dcn32_optc.c
index 1788eb29474b4..8234935433254 100644
--- a/drivers/gpu/drm/amd/display/dc/optc/dcn32/dcn32_optc.c
+++ b/drivers/gpu/drm/amd/display/dc/optc/dcn32/dcn32_optc.c
@@ -173,6 +173,9 @@ static bool optc32_disable_crtc(struct timing_generator *optc)
OPTC_SEG3_SRC_SEL, 0xf,
OPTC_NUM_OF_INPUT_SEGMENT, 0);
+ REG_UPDATE(OPTC_MEMORY_CONFIG,
+ OPTC_MEM_SEL, 0);
+
/* disable otg request until end of the first line
* in the vertical blank region
*/
diff --git a/drivers/gpu/drm/amd/display/dc/optc/dcn35/dcn35_optc.c b/drivers/gpu/drm/amd/display/dc/optc/dcn35/dcn35_optc.c
index 3d6c1b2c2b4d6..5b15475088503 100644
--- a/drivers/gpu/drm/amd/display/dc/optc/dcn35/dcn35_optc.c
+++ b/drivers/gpu/drm/amd/display/dc/optc/dcn35/dcn35_optc.c
@@ -145,6 +145,9 @@ static bool optc35_disable_crtc(struct timing_generator *optc)
OPTC_SEG3_SRC_SEL, 0xf,
OPTC_NUM_OF_INPUT_SEGMENT, 0);
+ REG_UPDATE(OPTC_MEMORY_CONFIG,
+ OPTC_MEM_SEL, 0);
+
/* disable otg request until end of the first line
* in the vertical blank region
*/
--
2.43.0
The patch below does not apply to the 6.8-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
Thanks,
Sasha
------------------ original commit in Linus's tree ------------------
From c3ec8c4f9a470c026066ac7b2e4bac898bc7ff02 Mon Sep 17 00:00:00 2001
From: David McFarland <corngood(a)gmail.com>
Date: Mon, 29 Jan 2024 18:18:22 -0400
Subject: [PATCH] drm/amd: Don't init MEC2 firmware when it fails to load
The same calls are made directly above, but conditional on the firmware
loading and validating successfully.
Cc: stable(a)vger.kernel.org
Fixes: 9931b67690cf ("drm/amd: Load GFX10 microcode during early_init")
Signed-off-by: David McFarland <corngood(a)gmail.com>
Reviewed-by: Mario Limonciello <mario.limonciello(a)amd.com>
Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com>
---
drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
index be4d5c1e826f3..b02d63328f1cd 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
@@ -4027,8 +4027,6 @@ static int gfx_v10_0_init_microcode(struct amdgpu_device *adev)
err = 0;
adev->gfx.mec2_fw = NULL;
}
- amdgpu_gfx_cp_init_microcode(adev, AMDGPU_UCODE_ID_CP_MEC2);
- amdgpu_gfx_cp_init_microcode(adev, AMDGPU_UCODE_ID_CP_MEC2_JT);
gfx_v10_0_check_fw_write_wait(adev);
out:
--
2.43.0
The patch below does not apply to the 6.8-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
Thanks,
Sasha
------------------ original commit in Linus's tree ------------------
From c9aef4f6c6d7cdc92a64ffe761c6921ec85157ae Mon Sep 17 00:00:00 2001
From: Wayne Lin <wayne.lin(a)amd.com>
Date: Fri, 2 Feb 2024 17:34:11 +0800
Subject: [PATCH] drm/amd/display: adjust few initialization order in dm
[Why]
Observe error message "Can't retrieve aconnector in hpd_rx_irq_offload_work"
when boot up with a mst tbt4 dock connected. After analyzing, there are few
parts needed to be adjusted:
1. hpd_rx_offload_wq[].aconnector is not initialzed before the dmub outbox
hpd_irq handler get registered which causes the error message.
2. registeration of hpd and hpd_rx_irq event for usb4 dp tunneling is not
aligned with legacy interface sequence
[How]
Put DMUB_NOTIFICATION_HPD and DMUB_NOTIFICATION_HPD_IRQ handler
registration into register_hpd_handlers() to align other interfaces and
get hpd_rx_offload_wq[].aconnector initialized earlier than that.
Leave DMUB_NOTIFICATION_AUX_REPLY registered as it was since we need that
while calling dc_link_detect(). USB4 connection status will be proactively
detected by dc_link_detect_connection_type() in amdgpu_dm_initialize_drm_device()
Cc: Stable <stable(a)vger.kernel.org>
Reviewed-by: Aurabindo Pillai <aurabindo.pillai(a)amd.com>
Acked-by: Rodrigo Siqueira <rodrigo.siqueira(a)amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler(a)amd.com>
Signed-off-by: Wayne Lin <wayne.lin(a)amd.com>
Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com>
---
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 37 +++++++++----------
1 file changed, 18 insertions(+), 19 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 985137b51372d..8b13cb334b366 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -1844,21 +1844,12 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
DRM_ERROR("amdgpu: fail to register dmub aux callback");
goto error;
}
- if (!register_dmub_notify_callback(adev, DMUB_NOTIFICATION_HPD, dmub_hpd_callback, true)) {
- DRM_ERROR("amdgpu: fail to register dmub hpd callback");
- goto error;
- }
- if (!register_dmub_notify_callback(adev, DMUB_NOTIFICATION_HPD_IRQ, dmub_hpd_callback, true)) {
- DRM_ERROR("amdgpu: fail to register dmub hpd callback");
- goto error;
- }
- }
-
- /* Enable outbox notification only after IRQ handlers are registered and DMUB is alive.
- * It is expected that DMUB will resend any pending notifications at this point, for
- * example HPD from DPIA.
- */
- if (dc_is_dmub_outbox_supported(adev->dm.dc)) {
+ /* Enable outbox notification only after IRQ handlers are registered and DMUB is alive.
+ * It is expected that DMUB will resend any pending notifications at this point. Note
+ * that hpd and hpd_irq handler registration are deferred to register_hpd_handlers() to
+ * align legacy interface initialization sequence. Connection status will be proactivly
+ * detected once in the amdgpu_dm_initialize_drm_device.
+ */
dc_enable_dmub_outbox(adev->dm.dc);
/* DPIA trace goes to dmesg logs only if outbox is enabled */
@@ -3547,6 +3538,14 @@ static void register_hpd_handlers(struct amdgpu_device *adev)
int_params.requested_polarity = INTERRUPT_POLARITY_DEFAULT;
int_params.current_polarity = INTERRUPT_POLARITY_DEFAULT;
+ if (dc_is_dmub_outbox_supported(adev->dm.dc)) {
+ if (!register_dmub_notify_callback(adev, DMUB_NOTIFICATION_HPD, dmub_hpd_callback, true))
+ DRM_ERROR("amdgpu: fail to register dmub hpd callback");
+
+ if (!register_dmub_notify_callback(adev, DMUB_NOTIFICATION_HPD_IRQ, dmub_hpd_callback, true))
+ DRM_ERROR("amdgpu: fail to register dmub hpd callback");
+ }
+
list_for_each_entry(connector,
&dev->mode_config.connector_list, head) {
@@ -3575,10 +3574,6 @@ static void register_hpd_handlers(struct amdgpu_device *adev)
handle_hpd_rx_irq,
(void *) aconnector);
}
-
- if (adev->dm.hpd_rx_offload_wq)
- adev->dm.hpd_rx_offload_wq[connector->index].aconnector =
- aconnector;
}
}
@@ -4590,6 +4585,10 @@ static int amdgpu_dm_initialize_drm_device(struct amdgpu_device *adev)
goto fail;
}
+ if (dm->hpd_rx_offload_wq)
+ dm->hpd_rx_offload_wq[aconnector->base.index].aconnector =
+ aconnector;
+
if (!dc_link_detect_connection_type(link, &new_connection_type))
DRM_ERROR("KMS: Failed to detect connector\n");
--
2.43.0
The patch below does not apply to the 6.8-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
Thanks,
Sasha
------------------ original commit in Linus's tree ------------------
From ca25a2b5f841f991e472e2dde7f5e2d337dbea08 Mon Sep 17 00:00:00 2001
From: Dillon Varone <dillon.varone(a)amd.com>
Date: Thu, 28 Dec 2023 21:36:39 -0500
Subject: [PATCH] drm/amd/display: Init link enc resources in dc_state only if
res_pool presents
[Why & How]
res_pool is not initialized in all situations such as virtual
environments, and therefore link encoder resources should not be
initialized if res_pool is NULL.
Cc: Mario Limonciello <mario.limonciello(a)amd.com>
Cc: Alex Deucher <alexander.deucher(a)amd.com>
Cc: stable(a)vger.kernel.org
Reviewed-by: Martin Leung <martin.leung(a)amd.com>
Acked-by: Alex Hung <alex.hung(a)amd.com>
Signed-off-by: Dillon Varone <dillon.varone(a)amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler(a)amd.com>
Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com>
---
drivers/gpu/drm/amd/display/dc/core/dc_state.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_state.c b/drivers/gpu/drm/amd/display/dc/core/dc_state.c
index 460a8010c79fe..56feee0ff01b1 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_state.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_state.c
@@ -267,7 +267,8 @@ void dc_state_construct(struct dc *dc, struct dc_state *state)
state->clk_mgr = dc->clk_mgr;
/* Initialise DIG link encoder resource tracking variables. */
- link_enc_cfg_init(dc, state);
+ if (dc->res_pool)
+ link_enc_cfg_init(dc, state);
}
void dc_state_destruct(struct dc_state *state)
--
2.43.0
The patch below does not apply to the 6.8-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
Thanks,
Sasha
------------------ original commit in Linus's tree ------------------
From ca01082353d4c7c316cd8cfa53879970564a9c71 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher(a)amd.com>
Date: Fri, 19 Jan 2024 12:23:55 -0500
Subject: [PATCH] drm/amdgpu/gfx10: set UNORD_DISPATCH in compute MQDs
This needs to be set to 1 to avoid a potential deadlock in
the GC 10.x and newer. On GC 9.x and older, this needs
to be set to 0. This can lead to hangs in some mixed
graphics and compute workloads. Updated firmware is also
required for AQL.
Reviewed-by: Feifei Xu <Feifei.Xu(a)amd.com>
Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com>
Cc: stable(a)vger.kernel.org
---
drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c | 2 +-
drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v10.c | 1 +
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
index 420c82b54650f..be4d5c1e826f3 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
@@ -6589,7 +6589,7 @@ static int gfx_v10_0_compute_mqd_init(struct amdgpu_device *adev, void *m,
#ifdef __BIG_ENDIAN
tmp = REG_SET_FIELD(tmp, CP_HQD_PQ_CONTROL, ENDIAN_SWAP, 1);
#endif
- tmp = REG_SET_FIELD(tmp, CP_HQD_PQ_CONTROL, UNORD_DISPATCH, 0);
+ tmp = REG_SET_FIELD(tmp, CP_HQD_PQ_CONTROL, UNORD_DISPATCH, 1);
tmp = REG_SET_FIELD(tmp, CP_HQD_PQ_CONTROL, TUNNEL_DISPATCH,
prop->allow_tunneling);
tmp = REG_SET_FIELD(tmp, CP_HQD_PQ_CONTROL, PRIV_STATE, 1);
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v10.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v10.c
index 8b7fed9135269..22cbfa1bdaddb 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v10.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v10.c
@@ -170,6 +170,7 @@ static void update_mqd(struct mqd_manager *mm, void *mqd,
m->cp_hqd_pq_control = 5 << CP_HQD_PQ_CONTROL__RPTR_BLOCK_SIZE__SHIFT;
m->cp_hqd_pq_control |=
ffs(q->queue_size / sizeof(unsigned int)) - 1 - 1;
+ m->cp_hqd_pq_control |= CP_HQD_PQ_CONTROL__UNORD_DISPATCH_MASK;
pr_debug("cp_hqd_pq_control 0x%x\n", m->cp_hqd_pq_control);
m->cp_hqd_pq_base_lo = lower_32_bits((uint64_t)q->queue_address >> 8);
--
2.43.0
The patch below does not apply to the 6.8-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
Thanks,
Sasha
------------------ original commit in Linus's tree ------------------
From db7bbd13f08774cde0332c705f042e327fe21e73 Mon Sep 17 00:00:00 2001
From: Nirmoy Das <nirmoy.das(a)intel.com>
Date: Mon, 19 Feb 2024 13:50:47 +0100
Subject: [PATCH] drm/i915: Check before removing mm notifier
Error in mmu_interval_notifier_insert() can leave a NULL
notifier.mm pointer. Catch that and return early.
Fixes: ed29c2691188 ("drm/i915: Fix userptr so we do not have to worry about obj->mm.lock, v7.")
Cc: <stable(a)vger.kernel.org> # v5.13+
[tursulin: Added Fixes and cc stable.]
Cc: Andi Shyti <andi.shyti(a)linux.intel.com>
Cc: Shawn Lee <shawn.c.lee(a)intel.com>
Signed-off-by: Nirmoy Das <nirmoy.das(a)intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi(a)intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240219125047.28906-1-nirmoy…
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin(a)intel.com>
---
drivers/gpu/drm/i915/gem/i915_gem_userptr.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c b/drivers/gpu/drm/i915/gem/i915_gem_userptr.c
index 0e21ce9d3e5ac..61abfb505766d 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_userptr.c
@@ -349,6 +349,9 @@ i915_gem_userptr_release(struct drm_i915_gem_object *obj)
{
GEM_WARN_ON(obj->userptr.page_ref);
+ if (!obj->userptr.notifier.mm)
+ return;
+
mmu_interval_notifier_remove(&obj->userptr.notifier);
obj->userptr.notifier.mm = NULL;
}
--
2.43.0
The patch below does not apply to the 6.8-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
Thanks,
Sasha
------------------ original commit in Linus's tree ------------------
From dc524d05974f615b145404191fcf91b478950499 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <ville.syrjala(a)linux.intel.com>
Date: Tue, 16 Jan 2024 23:08:21 +0200
Subject: [PATCH] Revert "drm/i915/dsi: Do display on sequence later on icl+"
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This reverts commit 88b065943cb583e890324d618e8d4b23460d51a3.
Lenovo 82TQ is unhappy if we do the display on sequence this
late. The display output shows severe corruption.
It's unclear if this is a failure on our part (perhaps
something to do with sending commands in LP mode after HS
/video mode transmission has been started? Though the backlight
on command at least seems to work) or simply that there are
some commands in the sequence that are needed to be done
earlier (eg. could be some DSC init stuff?). If the latter
then I don't think the current Windows code would work
either, but maybe this was originally tested with an older
driver, who knows.
Root causing this fully would likely require a lot of
experimentation which isn't really feasible without direct
access to the machine, so let's just accept failure and
go back to the original sequence.
Cc: stable(a)vger.kernel.org
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/10071
Signed-off-by: Ville Syrjälä <ville.syrjala(a)linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240116210821.30194-1-ville.…
Acked-by: Jani Nikula <jani.nikula(a)intel.com>
---
drivers/gpu/drm/i915/display/icl_dsi.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c b/drivers/gpu/drm/i915/display/icl_dsi.c
index ac456a2275dba..eda4a8b885904 100644
--- a/drivers/gpu/drm/i915/display/icl_dsi.c
+++ b/drivers/gpu/drm/i915/display/icl_dsi.c
@@ -1155,6 +1155,7 @@ static void gen11_dsi_powerup_panel(struct intel_encoder *encoder)
}
intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_INIT_OTP);
+ intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DISPLAY_ON);
/* ensure all panel commands dispatched before enabling transcoder */
wait_for_cmds_dispatched_to_panel(encoder);
@@ -1255,8 +1256,6 @@ static void gen11_dsi_enable(struct intel_atomic_state *state,
/* step6d: enable dsi transcoder */
gen11_dsi_enable_transcoder(encoder);
- intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DISPLAY_ON);
-
/* step7: enable backlight */
intel_backlight_enable(crtc_state, conn_state);
intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_BACKLIGHT_ON);
--
2.43.0