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[23.128.96.18]) by mx.google.com with ESMTP id h14si1472242eje.503.2020.07.09.00.01.04; Thu, 09 Jul 2020 00:01:28 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726245AbgGIHA6 (ORCPT + 99 others); Thu, 9 Jul 2020 03:00:58 -0400 Received: from smtp1.de.adit-jv.com ([93.241.18.167]:46182 "EHLO smtp1.de.adit-jv.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726119AbgGIHA5 (ORCPT ); Thu, 9 Jul 2020 03:00:57 -0400 Received: from localhost (smtp1.de.adit-jv.com [127.0.0.1]) by smtp1.de.adit-jv.com (Postfix) with ESMTP id E4CD83C0582; Thu, 9 Jul 2020 09:00:52 +0200 (CEST) Received: from smtp1.de.adit-jv.com ([127.0.0.1]) by localhost (smtp1.de.adit-jv.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id L_p_lQl1UCHK; Thu, 9 Jul 2020 09:00:45 +0200 (CEST) Received: from HI2EXCH01.adit-jv.com (hi2exch01.adit-jv.com [10.72.92.24]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by smtp1.de.adit-jv.com (Postfix) with ESMTPS id 655233C0588; Thu, 9 Jul 2020 09:00:28 +0200 (CEST) Received: from lxhi-065.adit-jv.com (10.72.94.15) by HI2EXCH01.adit-jv.com (10.72.92.24) with Microsoft SMTP Server (TLS) id 14.3.487.0; Thu, 9 Jul 2020 09:00:27 +0200 Date: Thu, 9 Jul 2020 09:00:23 +0200 From: Eugeniu Rosca To: Greg Kroah-Hartman , Alan Stern , Qais Yousef CC: , , , , Tony Prisk , Mathias Nyman , Oliver Neukum , , , Sasha Levin , Andrew Gabbasov , Dirk Behme , Eugeniu Rosca , Eugeniu Rosca Subject: Re: [PATCH 4.14 105/136] usb/ehci-platform: Set PM runtime as active on resume Message-ID: <20200709070023.GA18414@lxhi-065.adit-jv.com> References: <20200623195303.601828702@linuxfoundation.org> <20200623195308.955410923@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20200623195308.955410923@linuxfoundation.org> X-Originating-IP: [10.72.94.15] Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello everyone, Cc: linux-renesas-soc Cc: linux-pm On Tue, Jun 23, 2020 at 09:59:21PM +0200, Greg Kroah-Hartman wrote: > From: Qais Yousef > > [ Upstream commit 16bdc04cc98ab0c74392ceef2475ecc5e73fcf49 ] > > Follow suit of ohci-platform.c and perform pm_runtime_set_active() on > resume. > > ohci-platform.c had a warning reported due to the missing > pm_runtime_set_active() [1]. > > [1] https://lore.kernel.org/lkml/20200323143857.db5zphxhq4hz3hmd@e107158-lin.cambridge.arm.com/ > > Acked-by: Alan Stern > Signed-off-by: Qais Yousef > CC: Tony Prisk > CC: Greg Kroah-Hartman > CC: Mathias Nyman > CC: Oliver Neukum > CC: linux-arm-kernel@lists.infradead.org > CC: linux-usb@vger.kernel.org > CC: linux-kernel@vger.kernel.org > Link: https://lore.kernel.org/r/20200518154931.6144-3-qais.yousef@arm.com > Signed-off-by: Greg Kroah-Hartman > Signed-off-by: Sasha Levin > --- > drivers/usb/host/ehci-platform.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c > index f1908ea9fbd86..6fcd332880143 100644 > --- a/drivers/usb/host/ehci-platform.c > +++ b/drivers/usb/host/ehci-platform.c > @@ -390,6 +390,11 @@ static int ehci_platform_resume(struct device *dev) > } > > ehci_resume(hcd, priv->reset_on_resume); > + > + pm_runtime_disable(dev); > + pm_runtime_set_active(dev); > + pm_runtime_enable(dev); > + > return 0; After integrating v4.14.186 commit 5410d158ca2a50 ("usb/ehci-platform: Set PM runtime as active on resume") into downstream v4.14.x, we started to consistently experience below panic [1] on every second s2ram of R-Car H3 Salvator-X Renesas reference board. After some investigations, we concluded the following: - the issue does not exist in vanilla v5.8-rc4+ - [bisecting shows that] the panic on v4.14.186 is caused by the lack of v5.6-rc1 commit 987351e1ea7772 ("phy: core: Add consumer device link support"). Getting evidence for that is easy. Reverting 987351e1ea7772 in vanilla leads to a similar backtrace [2]. Questions: - Backporting 987351e1ea7772 ("phy: core: Add consumer device link support") to v4.14.187 looks challenging enough, so probably not worth it. Anybody to contradict this? - Assuming no plans to backport the missing mainline commit to v4.14.x, should the following three v4.14.186 commits be reverted on v4.14.x? * baef809ea497a4 ("usb/ohci-platform: Fix a warning when hibernating") * 9f33eff4958885 ("usb/xhci-plat: Set PM runtime as active on resume") * 5410d158ca2a50 ("usb/ehci-platform: Set PM runtime as active on resume") [1] https://elinux.org/R-Car/Boards/Salvator-X#Suspend-to-RAM root@rcar-gen3:~# cat s2ram.sh modprobe i2c-dev echo 9 > /proc/sys/kernel/printk i2cset -f -y 7 0x30 0x20 0x0F echo 0 > /sys/module/suspend/parameters/pm_test_delay echo core > /sys/power/pm_test echo deep > /sys/power/mem_sleep echo 1 > /sys/power/pm_debug_messages echo 0 > /sys/power/pm_print_times echo mem > /sys/power/state; root@rcar-gen3:~# root@rcar-gen3:~# sh s2ram.sh [ 65.853020] PM: suspend entry (deep) [ 65.858395] PM: Syncing filesystems ... done. [ 65.895890] PM: Preparing system for sleep (deep) [ 65.906272] Freezing user space processes ... (elapsed 0.004 seconds) done. [ 65.918350] OOM killer disabled. [ 65.921827] Freezing remaining freezable tasks ... (elapsed 0.005 seconds) done. [ 65.935063] PM: Suspending system (deep) [ 66.094910] PM: suspend of devices complete after 143.807 msecs [ 66.101282] PM: suspend devices took 0.162 seconds [ 66.133020] PM: late suspend of devices complete after 26.225 msecs [ 66.166806] PM: noirq suspend of devices complete after 24.050 msecs [ 66.173518] Disabling non-boot CPUs ... [ 66.199539] CPU1: shutdown [ 66.202563] psci: CPU1 killed (polled 0 ms) [ 66.230911] CPU2: shutdown [ 66.233923] psci: CPU2 killed (polled 0 ms) [ 66.261940] CPU3: shutdown [ 66.265351] psci: CPU3 killed (polled 0 ms) [ 66.300596] CPU4: shutdown [ 66.303837] psci: CPU4 killed (polled 0 ms) [ 66.340455] NOHZ: local_softirq_pending 202 [ 66.346818] CPU5: shutdown [ 66.349811] psci: CPU5 killed (polled 0 ms) [ 66.388761] CPU6: shutdown [ 66.391732] psci: CPU6 killed (polled 0 ms) [ 66.442557] CPU7: shutdown [ 66.445659] psci: CPU7 killed (polled 0 ms) [ 66.452730] PM: suspend debug: Waiting for 0 second(s). [ 66.452730] PM: Timekeeping suspended for 0.005 seconds [ 66.452898] Enabling non-boot CPUs ... [ 66.470705] CPU1 is up [ 66.480825] CPU2 is up [ 66.491482] CPU3 is up [ 66.517818] CPU4 is up [ 66.537699] CPU5 is up [ 66.558622] CPU6 is up [ 66.580985] CPU7 is up [ 66.597724] PM: noirq resume of devices complete after 13.979 msecs [ 66.689793] PM: early resume of devices complete after 83.851 msecs [ 66.700577] Bad mode in Error handler detected on CPU3, code 0xbf000002 -- SError [ 66.700610] Bad mode in Error handler detected on CPU2, code 0xbf000002 -- SError [ 66.700687] Kernel panic - not syncing: bad mode [ 66.700709] CPU: 3 PID: 2689 Comm: kworker/u16:22 Tainted: G C 4.14.187-ltsi+ #17 [ 66.730293] Hardware name: Renesas Salvator-X board based on r8a7795 ES2.0+ (DT) [ 66.738028] Workqueue: events_unbound async_run_entry_fn [ 66.743598] Call trace: [ 66.746232] dump_backtrace+0x0/0x348 [ 66.750106] show_stack+0x24/0x30 [ 66.753618] dump_stack+0x11c/0x18c [ 66.757311] panic+0x2e4/0x5fc [ 66.760560] bad_el0_sync+0x0/0x210 [ 66.764375] el1_error_invalid+0x7c/0x9c [ 66.768528] rcar_gen3_phy_usb2_init+0xa8/0x228 [ 66.773283] phy_init+0xdc/0x15c [ 66.776701] ehci_platform_power_on+0x1f4/0x43c [ 66.781443] ehci_platform_resume+0x194/0x1d8 [ 66.786014] dpm_run_callback+0x754/0xe80 [ 66.790232] device_resume+0x194/0x3bc [ 66.794178] async_resume+0x30/0x64 [ 66.797855] async_run_entry_fn+0x194/0x4f0 [ 66.802244] process_one_work+0xfe4/0x1b58 [ 66.806544] worker_thread+0x73c/0xaf0 [ 66.810490] kthread+0x3fc/0x414 [ 66.813903] ret_from_fork+0x10/0x18 [ 66.817784] SMP: stopping secondary CPUs [ 67.843559] SMP: failed to stop secondary CPUs 2-3 [ 67.848616] Kernel Offset: disabled [ 67.852599] CPU features: 0x1002004 [ 67.856285] Memory Limit: none [ 67.859568] ---[ end Kernel panic - not syncing: bad mode ]--- [2] Same as [1], but on vanilla after reverting 987351e1ea7772 ("phy: core: Add consumer device link support") root@rcar-gen3:~# sh s2ram.sh [ 23.028192] Filesystems sync: 0.000 seconds [ 23.033611] PM: Preparing system for sleep (deep) [ 23.040723] Freezing user space processes ... (elapsed 0.001 seconds) done. [ 23.050170] OOM killer disabled. [ 23.054796] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done. [ 23.064901] PM: Suspending system (deep) [ 23.098442] PM: suspend of devices complete after 28.499 msecs [ 23.104324] PM: start suspend of devices complete after 35.478 msecs [ 23.110705] PM: suspend devices took 0.042 seconds [ 23.118196] PM: late suspend of devices complete after 2.673 msecs [ 23.126686] PM: noirq suspend of devices complete after 1.837 msecs [ 23.132982] Disabling non-boot CPUs ... [ 23.137756] CPU1: shutdown [ 23.140496] psci: CPU1 killed (polled 0 ms) [ 23.145860] CPU2: shutdown [ 23.148598] psci: CPU2 killed (polled 0 ms) [ 23.153920] CPU3: shutdown [ 23.156658] psci: CPU3 killed (polled 0 ms) [ 23.162406] CPU4: shutdown [ 23.165135] psci: CPU4 killed (polled 0 ms) [ 23.170701] CPU5: shutdown [ 23.173441] psci: CPU5 killed (polled 0 ms) [ 23.178930] CPU6: shutdown [ 23.181706] psci: CPU6 killed (polled 0 ms) [ 23.187070] CPU7: shutdown [ 23.189834] psci: CPU7 killed (polled 0 ms) [ 23.194490] PM: suspend debug: Waiting for 0 second(s). [ 23.194490] PM: Timekeeping suspended for 0.005 seconds [ 23.194515] Enabling non-boot CPUs ... [ 23.203786] Detected PIPT I-cache on CPU1 [ 23.203837] CPU1: Booted secondary processor 0x0000000001 [0x411fd073] [ 23.204566] CPU1 is up [ 23.217725] Detected PIPT I-cache on CPU2 [ 23.217756] CPU2: Booted secondary processor 0x0000000002 [0x411fd073] [ 23.218352] CPU2 is up [ 23.231469] Detected PIPT I-cache on CPU3 [ 23.231496] CPU3: Booted secondary processor 0x0000000003 [0x411fd073] [ 23.232098] CPU3 is up [ 23.245257] Detected VIPT I-cache on CPU4 [ 23.245315] CPU4: Booted secondary processor 0x0000000100 [0x410fd034] [ 23.246621] CPU4 is up [ 23.259744] Detected VIPT I-cache on CPU5 [ 23.259782] CPU5: Booted secondary processor 0x0000000101 [0x410fd034] [ 23.261039] CPU5 is up [ 23.274141] Detected VIPT I-cache on CPU6 [ 23.274180] CPU6: Booted secondary processor 0x0000000102 [0x410fd034] [ 23.275494] CPU6 is up [ 23.288598] Detected VIPT I-cache on CPU7 [ 23.288639] CPU7: Booted secondary processor 0x0000000103 [0x410fd034] [ 23.289996] CPU7 is up [ 23.304324] PM: noirq resume of devices complete after 1.369 msecs [ 23.315803] PM: early resume of devices complete after 4.991 msecs [ 23.322623] Internal error: synchronous external abort: 96000210 [#1] PREEMPT SMP [ 23.322680] SError Interrupt on CPU2, code 0xbf000002 -- SError [ 23.322682] CPU: 2 PID: 1032 Comm: kworker/u16:6 Not tainted 5.8.0-rc4-00075-g81e8773b8f41 #28 [ 23.322684] Hardware name: Renesas Salvator-X board based on r8a77951 (DT) [ 23.322686] Workqueue: events_unbound async_run_entry_fn [ 23.322688] pstate: 40000005 (nZcv daif -PAN -UAO BTYPE=--) [ 23.322690] pc : ehci_readl.isra.13+0x8/0x20 [ 23.322691] lr : ehci_resume+0x60/0x14c [ 23.322692] sp : ffff80001252bca0 [ 23.322693] x29: ffff80001252bca0 x28: 0000000000000000 [ 23.322696] x27: 0000000000000000 x26: 0000000000000000 [ 23.322698] x25: 0000000000000000 x24: 0000000000000010 [ 23.322701] x23: ffff800010d79000 x22: 0000000000000000 [ 23.322704] x21: ffff0006f917f324 x20: ffff0006f917f000 [ 23.322706] x19: ffff0006f917f250 x18: 000000000000000a [ 23.322709] x17: 0000000000000000 x16: 0000000000000000 [ 23.322712] x15: 0000000000000000 x14: 0000000000000000 [ 23.322714] x13: 0000000400000000 x12: 0000000000000001 [ 23.322717] x11: 0000000000000001 x10: 0000000000000a60 [ 23.322719] x9 : ffff80001252bab0 x8 : ffff0006f92045c0 [ 23.322722] x7 : ffff80001252bc70 x6 : 0000000000000000 [ 23.322724] x5 : ffff0006fa610848 x4 : 0000000000000000 [ 23.322727] x3 : 0000000000000000 x2 : 0000000000000001 [ 23.322730] x1 : ffff0006f917f138 x0 : 0000000000000000 [ 23.322733] Kernel panic - not syncing: Asynchronous SError Interrupt [ 23.460158] Modules linked in: [ 23.463225] CPU: 5 PID: 2116 Comm: kworker/u16:12 Not tainted 5.8.0-rc4-00075-g81e8773b8f41 #28 [ 23.471946] Hardware name: Renesas Salvator-X board based on r8a77951 (DT) [ 23.478844] Workqueue: events_unbound async_run_entry_fn [ 23.484172] pstate: 40000005 (nZcv daif -PAN -UAO BTYPE=--) [ 23.489760] pc : ehci_readl.isra.13+0x4/0x20 [ 23.494041] lr : ehci_resume+0x60/0x14c [ 23.497885] sp : ffff800012da3ca0 [ 23.501206] x29: ffff800012da3ca0 x28: 0000000000000000 [ 23.506532] x27: 0000000000000000 x26: 0000000000000000 [ 23.511858] x25: 0000000000000000 x24: 0000000000000010 [ 23.517184] x23: ffff800010d79000 x22: 0000000000000000 [ 23.522510] x21: ffff0006f9f4cb24 x20: ffff0006f9f4c800 [ 23.527835] x19: ffff0006f9f4ca50 x18: fffffe001bc4e708 [ 23.533162] x17: 0000000000000000 x16: 0000000000000000 [ 23.538487] x15: 0000000000000001 x14: 0000000000000000 [ 23.543814] x13: 0000000100000000 x12: 0000000000000001 [ 23.549139] x11: 0000000000000001 x10: 0000000000000a60 [ 23.554465] x9 : ffff800012da3ab0 x8 : ffff0006faeba840 [ 23.559791] x7 : ffff800012da3c70 x6 : 0000000000000000 [ 23.565117] x5 : ffff0006fa610c48 x4 : 0000000000000000 [ 23.570443] x3 : 0000000000000000 x2 : 0000000000000001 [ 23.575768] x1 : ffff0006f9f4c938 x0 : ffff800010f6d160 [ 23.581096] Call trace: [ 23.583549] ehci_readl.isra.13+0x4/0x20 [ 23.587484] ehci_platform_resume+0x48/0xb8 [ 23.591681] dpm_run_callback+0x68/0xdc [ 23.595527] device_resume+0xcc/0x180 [ 23.599199] async_resume+0x28/0x5c [ 23.602696] async_run_entry_fn+0x50/0x14c [ 23.606808] process_one_work+0x1dc/0x2b4 [ 23.610829] worker_thread+0x1d0/0x260 [ 23.614590] kthread+0xf0/0x100 [ 23.617743] ret_from_fork+0x10/0x30 [ 23.621331] Code: d65f03c0 52808000 17fffffd d503233f (b9400000) [ 23.627441] ---[ end trace f663646e2a9dfb92 ]--- [ 23.632072] Internal error: synchronous external abort: 96000210 [#2] PREEMPT SMP [ 23.639576] Modules linked in: [ 23.642642] CPU: 7 PID: 2112 Comm: kworker/u16:8 Tainted: G D 5.8.0-rc4-00075-g81e8773b8f41 #28 [ 23.652668] Hardware name: Renesas Salvator-X board based on r8a77951 (DT) [ 23.659563] Workqueue: events_unbound async_run_entry_fn [ 23.664890] pstate: 40000005 (nZcv daif -PAN -UAO BTYPE=--) [ 23.670477] pc : ehci_readl.isra.13+0x4/0x20 [ 23.674758] lr : ehci_resume+0x60/0x14c [ 23.678601] sp : ffff800012d83ca0 [ 23.681922] x29: ffff800012d83ca0 x28: 0000000000000000 [ 23.687249] x27: 0000000000000000 x26: 0000000000000000 [ 23.692574] x25: 0000000000000000 x24: 0000000000000010 [ 23.697900] x23: ffff800010d79000 x22: 0000000000000000 [ 23.703226] x21: ffff0006f9f4db24 x20: ffff0006f9f4d800 [ 23.708552] x19: ffff0006f9f4da50 x18: 000000000000000a [ 23.713878] x17: 0000000000000000 x16: 0000000000000000 [ 23.719203] x15: 000000000000000d x14: ffff80001103be18 [ 23.724529] x13: ffffffffffffffff x12: 0000000000000000 [ 23.729855] x11: 0000000000000000 x10: 0000000000000a60 [ 23.735181] x9 : ffff800012d83ab0 x8 : ffff0006faeb9980 [ 23.740507] x7 : ffff800012d83c70 x6 : 0000000000000000 [ 23.745833] x5 : ffff0006fa611048 x4 : 0000000000000000 [ 23.751159] x3 : 0000000000000000 x2 : 0000000000000001 [ 23.756484] x1 : ffff0006f9f4d938 x0 : ffff800010f8d160 [ 23.761810] Call trace: [ 23.764263] ehci_readl.isra.13+0x4/0x20 [ 23.768197] ehci_platform_resume+0x48/0xb8 [ 23.772391] dpm_run_callback+0x68/0xdc [ 23.776237] device_resume+0xcc/0x180 [ 23.779908] async_resume+0x28/0x5c [ 23.783406] async_run_entry_fn+0x50/0x14c [ 23.787513] process_one_work+0x1dc/0x2b4 [ 23.791534] worker_thread+0x1d0/0x260 [ 23.795292] kthread+0xf0/0x100 [ 23.798442] ret_from_fork+0x10/0x30 [ 23.802028] Code: d65f03c0 52808000 17fffffd d503233f (b9400000) [ 23.808137] ---[ end trace f663646e2a9dfb93 ]--- [ 23.812773] SMP: stopping secondary CPUs [ 23.812774] Kernel Offset: disabled [ 23.812775] CPU features: 0x040022,20006004 [ 23.812777] Memory Limit: none -- Best regards, Eugeniu Rosca