kernel/linux.git/drivers/usb/host/ehci-platform.c, branch v4.9.331

Revert "usb/ehci-platform: Set PM runtime as active on resume"

2020-07-22T07:10:50+00:00

This reverts commit 5365fc3132a36a027fd7c2bb461e651b37f1e4d1. Eugeniu Rosca writes: On Thu, Jul 09, 2020 at 09:00:23AM +0200, Eugeniu Rosca wrote: >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") Signed-off-by: Sasha Levin

usb/ehci-platform: Set PM runtime as active on resume

2020-06-30T19:38:30+00:00

[ 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

usb: ehci-platform: increase EHCI_MAX_RSTS to 4

2016-10-24T12:29:08+00:00

Socionext LD11 SoC (arch/arm64/boot/dts/socionext/uniphier-ld11.dtsi) needs to handle 4 reset lines for EHCI. Signed-off-by: Masahiro Yamada Signed-off-by: Greg Kroah-Hartman

ehci-platform: add the max clock number to 4

2016-08-15T14:25:59+00:00

Allwinner A64 EHCI requires 4 clocks to be enabled. Signed-off-by: Icenowy Zheng Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman

ehci-platform: Add support for shared reset controllers

2016-06-08T17:55:17+00:00

Add support for shared platform controllers by using devm_reset_control_get_shared_by_index instead of of_reset_control_get_by_index. Note we use the devm function because there is no of_reset_control_get_shared_by_index, this also leads to a nice cleanup of the cleanup code. This brings the ehci-platform reset handling code inline with ohci-platform. Signed-off-by: Hans de Goede Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman

usb: ehci-platform: add reset controller number in struct ehci_platform_priv

2016-06-08T05:18:39+00:00

Some ehci compatible controllers have more than one reset signal lines, e.g., Synopsys DWC USB2.0 Host-AHB Controller has two resets hreset_i_n and phy_rst_i_n. Two more resets are added in this patch in order for this kind of controller to use this driver directly. Signed-off-by: Jiancheng Xue Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman

USB: host: use to_platform_device

2016-01-25T05:00:33+00:00

Use to_platform_device() instead of open-coding it. Signed-off-by: Geliang Tang Signed-off-by: Greg Kroah-Hartman

USB: ehci-platform: Add ACPI bindings for the EHCI platform driver.

2015-10-04T09:47:13+00:00

This enables USB on the ARM juno board when booted with an ACPI kernel. The PNP id comes from the PNP/ACPI registry and describes an EHCI controller without debug. Tested-by: Huang Shijie Reviewed-by: Graeme Gregory Reviewed-by: Hanjun Guo Acked-by: Alan Stern Signed-off-by: Jeremy Linton Signed-off-by: Greg Kroah-Hartman

USB: ehci-platform: Display a DMA configuration error message

2015-10-04T09:47:13+00:00

If the ehci driver fails to configure the dma settings then display a dev error instead of simply failing. This is triggered in an ACPI world if the user fails to set the _CCA on the device. Tested-by: Huang Shijie Reviewed-by: Graeme Gregory Reviewed-by: Hanjun Guo Acked-by: Alan Stern Signed-off-by: Jeremy Linton Signed-off-by: Greg Kroah-Hartman

usb: ehci-platform: Fix using multiple controllers from OF

2015-08-05T19:29:19+00:00

When using OF defined controllers the platform data struct is shared between all devices, so it can't be used for device specific settings. However it is currently used for the OF properties needs-reset-on-resume and has-transaction-translator. To fix this issue move setting hcd->has_tt to the probe and move pdata->reset_on_resume to the private data. Signed-off-by: Alban Bedel Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman