From patchwork Mon Sep 13 13:14:04 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 510857 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E90A8C433F5 for ; Mon, 13 Sep 2021 13:23:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D6F6A6127C for ; Mon, 13 Sep 2021 13:23:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240369AbhIMNZN (ORCPT ); Mon, 13 Sep 2021 09:25:13 -0400 Received: from mail.kernel.org ([198.145.29.99]:35020 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240164AbhIMNWM (ORCPT ); Mon, 13 Sep 2021 09:22:12 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 6383C6112E; Mon, 13 Sep 2021 13:20:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1631539240; bh=jblwlzcH91SHd9WHU0gojaPkQdpUmkQ/ecklKYxsljM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=p4tRle/C1b8Y8ZfQEs8rNz1EV1AtVVNAg+ATRk2myythaWnWXUqdO55dEXYS4ls/w 2lRl3HL+8tDpUdsgnPD4ymk9TEk3spn4bEEN+yMuCz/MHxePe66eZX7q8Csry5D479 SDVv9ucV9QDemd4HEev12kLcMkkfx12d3clBe5LA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Kai-Heng Feng , Alex Deucher , Sasha Levin Subject: [PATCH 5.4 063/144] drm/amdgpu/acp: Make PM domain really work Date: Mon, 13 Sep 2021 15:14:04 +0200 Message-Id: <20210913131050.076993476@linuxfoundation.org> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20210913131047.974309396@linuxfoundation.org> References: <20210913131047.974309396@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Kai-Heng Feng [ Upstream commit aff890288de2d818e4f83ec40c9315e2d735df07 ] Devices created by mfd_add_hotplug_devices() don't really increase the index of its name, so get_mfd_cell_dev() cannot find any device, hence a NULL dev is passed to pm_genpd_add_device(): [ 56.974926] (NULL device *): amdgpu: device acp_audio_dma.0.auto added to pm domain [ 56.974933] (NULL device *): amdgpu: Failed to add dev to genpd [ 56.974941] [drm:amdgpu_device_ip_init [amdgpu]] *ERROR* hw_init of IP block failed -22 [ 56.975810] amdgpu 0000:00:01.0: amdgpu: amdgpu_device_ip_init failed [ 56.975839] amdgpu 0000:00:01.0: amdgpu: Fatal error during GPU init [ 56.977136] ------------[ cut here ]------------ [ 56.977143] kernel BUG at mm/slub.c:4206! [ 56.977158] invalid opcode: 0000 [#1] SMP NOPTI [ 56.977167] CPU: 1 PID: 1648 Comm: modprobe Not tainted 5.12.0-051200rc8-generic #202104182230 [ 56.977175] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./FM2A68M-HD+, BIOS P5.20 02/13/2019 [ 56.977180] RIP: 0010:kfree+0x3bf/0x410 [ 56.977195] Code: 89 e7 48 d3 e2 f7 da e8 5f 0d 02 00 80 e7 02 75 3e 44 89 ee 4c 89 e7 e8 ef 5f fd ff e9 fa fe ff ff 49 8b 44 24 08 a8 01 75 b7 <0f> 0b 4c 8b 4d b0 48 8b 4d a8 48 89 da 4c 89 e6 41 b8 01 00 00 00 [ 56.977202] RSP: 0018:ffffa48640ff79f0 EFLAGS: 00010246 [ 56.977210] RAX: 0000000000000000 RBX: ffff9286127d5608 RCX: 0000000000000000 [ 56.977215] RDX: 0000000000000000 RSI: ffffffffc099d0fb RDI: ffff9286127d5608 [ 56.977220] RBP: ffffa48640ff7a48 R08: 0000000000000001 R09: 0000000000000001 [ 56.977224] R10: 0000000000000000 R11: ffff9286087d8458 R12: fffff3ae0449f540 [ 56.977229] R13: 0000000000000000 R14: dead000000000122 R15: dead000000000100 [ 56.977234] FS: 00007f9de5929540(0000) GS:ffff928612e80000(0000) knlGS:0000000000000000 [ 56.977240] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.977245] CR2: 00007f697dd97160 CR3: 00000001110f0000 CR4: 00000000001506e0 [ 56.977251] Call Trace: [ 56.977261] amdgpu_dm_encoder_destroy+0x1b/0x30 [amdgpu] [ 56.978056] drm_mode_config_cleanup+0x4f/0x2e0 [drm] [ 56.978147] ? kfree+0x3dd/0x410 [ 56.978157] ? drm_managed_release+0xc8/0x100 [drm] [ 56.978232] drm_mode_config_init_release+0xe/0x10 [drm] [ 56.978311] drm_managed_release+0x9d/0x100 [drm] [ 56.978388] devm_drm_dev_init_release+0x4d/0x70 [drm] [ 56.978450] devm_action_release+0x15/0x20 [ 56.978459] release_nodes+0x77/0xc0 [ 56.978469] devres_release_all+0x3f/0x50 [ 56.978477] really_probe+0x245/0x460 [ 56.978485] driver_probe_device+0xe9/0x160 [ 56.978492] device_driver_attach+0xab/0xb0 [ 56.978499] __driver_attach+0x8f/0x150 [ 56.978506] ? device_driver_attach+0xb0/0xb0 [ 56.978513] bus_for_each_dev+0x7e/0xc0 [ 56.978521] driver_attach+0x1e/0x20 [ 56.978528] bus_add_driver+0x135/0x1f0 [ 56.978534] driver_register+0x91/0xf0 [ 56.978540] __pci_register_driver+0x54/0x60 [ 56.978549] amdgpu_init+0x77/0x1000 [amdgpu] [ 56.979246] ? 0xffffffffc0dbc000 [ 56.979254] do_one_initcall+0x48/0x1d0 [ 56.979265] ? kmem_cache_alloc_trace+0x120/0x230 [ 56.979274] ? do_init_module+0x28/0x280 [ 56.979282] do_init_module+0x62/0x280 [ 56.979288] load_module+0x71c/0x7a0 [ 56.979296] __do_sys_finit_module+0xc2/0x120 [ 56.979305] __x64_sys_finit_module+0x1a/0x20 [ 56.979311] do_syscall_64+0x38/0x90 [ 56.979319] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 56.979328] RIP: 0033:0x7f9de54f989d [ 56.979335] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d c3 f5 0c 00 f7 d8 64 89 01 48 [ 56.979342] RSP: 002b:00007ffe3c395a28 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 56.979350] RAX: ffffffffffffffda RBX: 0000560df3ef4330 RCX: 00007f9de54f989d [ 56.979355] RDX: 0000000000000000 RSI: 0000560df3a07358 RDI: 000000000000000f [ 56.979360] RBP: 0000000000040000 R08: 0000000000000000 R09: 0000000000000000 [ 56.979365] R10: 000000000000000f R11: 0000000000000246 R12: 0000560df3a07358 [ 56.979369] R13: 0000000000000000 R14: 0000560df3ef4460 R15: 0000560df3ef4330 [ 56.979377] Modules linked in: amdgpu(+) iommu_v2 gpu_sched drm_ttm_helper ttm drm_kms_helper cec rc_core i2c_algo_bit fb_sys_fops syscopyarea sysfillrect sysimgblt nft_counter xt_tcpudp ipt_REJECT nf_reject_ipv4 xt_conntrack iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_raw iptable_security ip_set nf_tables libcrc32c nfnetlink ip6_tables iptable_filter bpfilter input_leds binfmt_misc edac_mce_amd kvm_amd ccp kvm snd_hda_codec_realtek snd_hda_codec_generic crct10dif_pclmul snd_hda_codec_hdmi ledtrig_audio ghash_clmulni_intel aesni_intel snd_hda_intel snd_intel_dspcfg snd_seq_midi crypto_simd snd_intel_sdw_acpi cryptd snd_hda_codec snd_seq_midi_event snd_rawmidi snd_hda_core snd_hwdep snd_seq fam15h_power k10temp snd_pcm snd_seq_device snd_timer snd mac_hid soundcore sch_fq_codel nct6775 hwmon_vid drm ip_tables x_tables autofs4 dm_mirror dm_region_hash dm_log hid_generic usbhid hid uas usb_storage r8169 crc32_pclmul realtek ahci xhci_pci i2c_piix4 [ 56.979521] xhci_pci_renesas libahci video [ 56.979541] ---[ end trace cb8f6a346f18da7b ]--- Instead of finding MFD hotplugged device by its name, simply iterate over the child devices to avoid the issue. Squash in unused variable removal (Alex) BugLink: https://bugs.launchpad.net/bugs/1920674 Fixes: 25030321ba28 ("drm/amd: add pm domain for ACP IP sub blocks") Signed-off-by: Kai-Heng Feng Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c | 54 ++++++++++++------------- 1 file changed, 26 insertions(+), 28 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c index 82155ac3288a..64ee44c2fdd1 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c @@ -163,17 +163,28 @@ static int acp_poweron(struct generic_pm_domain *genpd) return 0; } -static struct device *get_mfd_cell_dev(const char *device_name, int r) +static int acp_genpd_add_device(struct device *dev, void *data) { - char auto_dev_name[25]; - struct device *dev; + struct generic_pm_domain *gpd = data; + int ret; - snprintf(auto_dev_name, sizeof(auto_dev_name), - "%s.%d.auto", device_name, r); - dev = bus_find_device_by_name(&platform_bus_type, NULL, auto_dev_name); - dev_info(dev, "device %s added to pm domain\n", auto_dev_name); + ret = pm_genpd_add_device(gpd, dev); + if (ret) + dev_err(dev, "Failed to add dev to genpd %d\n", ret); - return dev; + return ret; +} + +static int acp_genpd_remove_device(struct device *dev, void *data) +{ + int ret; + + ret = pm_genpd_remove_device(dev); + if (ret) + dev_err(dev, "Failed to remove dev from genpd %d\n", ret); + + /* Continue to remove */ + return 0; } /** @@ -184,11 +195,10 @@ static struct device *get_mfd_cell_dev(const char *device_name, int r) */ static int acp_hw_init(void *handle) { - int r, i; + int r; uint64_t acp_base; u32 val = 0; u32 count = 0; - struct device *dev; struct i2s_platform_data *i2s_pdata = NULL; struct amdgpu_device *adev = (struct amdgpu_device *)handle; @@ -344,15 +354,10 @@ static int acp_hw_init(void *handle) if (r) goto failure; - for (i = 0; i < ACP_DEVS ; i++) { - dev = get_mfd_cell_dev(adev->acp.acp_cell[i].name, i); - r = pm_genpd_add_device(&adev->acp.acp_genpd->gpd, dev); - if (r) { - dev_err(dev, "Failed to add dev to genpd\n"); - goto failure; - } - } - + r = device_for_each_child(adev->acp.parent, &adev->acp.acp_genpd->gpd, + acp_genpd_add_device); + if (r) + goto failure; /* Assert Soft reset of ACP */ val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET); @@ -413,10 +418,8 @@ failure: */ static int acp_hw_fini(void *handle) { - int i, ret; u32 val = 0; u32 count = 0; - struct device *dev; struct amdgpu_device *adev = (struct amdgpu_device *)handle; /* return early if no ACP */ @@ -461,13 +464,8 @@ static int acp_hw_fini(void *handle) udelay(100); } - for (i = 0; i < ACP_DEVS ; i++) { - dev = get_mfd_cell_dev(adev->acp.acp_cell[i].name, i); - ret = pm_genpd_remove_device(dev); - /* If removal fails, dont giveup and try rest */ - if (ret) - dev_err(dev, "remove dev from genpd failed\n"); - } + device_for_each_child(adev->acp.parent, NULL, + acp_genpd_remove_device); mfd_remove_devices(adev->acp.parent); kfree(adev->acp.acp_res);