* [PATCH v2 1/1] usb:xhci: update condition to select bus->sysdev from parent device
@ 2017-08-19 3:43 Thang Q. Nguyen
2017-08-24 2:53 ` Thang Q. Nguyen
0 siblings, 1 reply; 4+ messages in thread
From: Thang Q. Nguyen @ 2017-08-19 3:43 UTC (permalink / raw)
To: Mathias Nyman, Greg Kroah-Hartman, linux-usb, linux-kernel
Cc: Thang Nguyen, Tung Nguyen, Phong Vo, Loc Ho, patches
From: "Thang Q. Nguyen" <tqnguyen@apm.com>
For commit 4c39d4b949d3 ("usb: xhci: use bus->sysdev for DMA
configuration"), sysdev points to devices known to the system firmware
or hardware for DMA parameters.
However, the parent of the system firmware/hardware device checking
logic does not work in ACPI boot mode. This patch updates the formulation
to check this case in both DT and ACPI.
Signed-off-by: Tung Nguyen <tunguyen@apm.com>
Signed-off-by: Thang Q. Nguyen <tqnguyen@apm.com>
---
Change since v1:
- Update codes to work with kernel 4.13-rc5
---
drivers/usb/host/xhci-plat.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index c04144b..1bb9729 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -187,7 +187,10 @@ static int xhci_plat_probe(struct platform_device *pdev)
* 3. xhci_plat is grandchild of a pci device (dwc3-pci)
*/
sysdev = &pdev->dev;
- if (sysdev->parent && !sysdev->of_node && sysdev->parent->of_node)
+ if (sysdev->parent && !is_of_node(sysdev->fwnode) &&
+ !is_acpi_device_node(sysdev->fwnode) &&
+ (is_of_node(sysdev->parent->fwnode) ||
+ is_acpi_device_node(sysdev->parent->fwnode)))
sysdev = sysdev->parent;
#ifdef CONFIG_PCI
else if (sysdev->parent && sysdev->parent->parent &&
--
1.8.3.1
^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [PATCH v2 1/1] usb:xhci: update condition to select bus->sysdev from parent device
2017-08-19 3:43 [PATCH v2 1/1] usb:xhci: update condition to select bus->sysdev from parent device Thang Q. Nguyen
@ 2017-08-24 2:53 ` Thang Q. Nguyen
2017-09-05 11:14 ` Mathias Nyman
0 siblings, 1 reply; 4+ messages in thread
From: Thang Q. Nguyen @ 2017-08-24 2:53 UTC (permalink / raw)
To: Mathias Nyman, Greg Kroah-Hartman, linux-usb, linux-kernel
Cc: Thang Nguyen, Tung Nguyen, Phong Vo, Loc Ho, patches
On Sat, Aug 19, 2017 at 10:43 AM, Thang Q. Nguyen <tqnguyen@apm.com> wrote:
> From: "Thang Q. Nguyen" <tqnguyen@apm.com>
>
> For commit 4c39d4b949d3 ("usb: xhci: use bus->sysdev for DMA
> configuration"), sysdev points to devices known to the system firmware
> or hardware for DMA parameters.
> However, the parent of the system firmware/hardware device checking
> logic does not work in ACPI boot mode. This patch updates the formulation
> to check this case in both DT and ACPI.
>
> Signed-off-by: Tung Nguyen <tunguyen@apm.com>
> Signed-off-by: Thang Q. Nguyen <tqnguyen@apm.com>
> ---
> Change since v1:
> - Update codes to work with kernel 4.13-rc5
> ---
> drivers/usb/host/xhci-plat.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
> index c04144b..1bb9729 100644
> --- a/drivers/usb/host/xhci-plat.c
> +++ b/drivers/usb/host/xhci-plat.c
> @@ -187,7 +187,10 @@ static int xhci_plat_probe(struct platform_device *pdev)
> * 3. xhci_plat is grandchild of a pci device (dwc3-pci)
> */
> sysdev = &pdev->dev;
> - if (sysdev->parent && !sysdev->of_node && sysdev->parent->of_node)
> + if (sysdev->parent && !is_of_node(sysdev->fwnode) &&
> + !is_acpi_device_node(sysdev->fwnode) &&
> + (is_of_node(sysdev->parent->fwnode) ||
> + is_acpi_device_node(sysdev->parent->fwnode)))
> sysdev = sysdev->parent;
> #ifdef CONFIG_PCI
> else if (sysdev->parent && sysdev->parent->parent &&
> --
> 1.8.3.1
>
Is there any comment about the patch?
With current kernel (4.13.0-rc6), booting the Linux using ACPI boot,
kernel is crashed right after probing the USB DWC3 driver with the
following messages:
[ 10.193176] WARNING: CPU: 0 PID: 1 at
drivers/usb/host/xhci-plat.c:199 xhci_plat_probe+0x2f0/0x700
[ 10.193176] WARNING: CPU: 0 PID: 1 at
drivers/usb/host/xhci-plat.c:199 xhci_plat_probe+0x2f0/0x700
[ 10.211272] Modules linked in:
[ 10.211272] Modules linked in:
[ 10.217457] CPU: 0 PID: 1 Comm: swapper/0 Not tainted
4.13.0-rc6-00066-g143c97c #4
[ 10.217457] CPU: 0 PID: 1 Comm: swapper/0 Not tainted
4.13.0-rc6-00066-g143c97c #4
[ 10.232727] Hardware name: AppliedMicro X-Gene Mustang Board/X-Gene
Mustang Board, BIOS 3.07.09 Feb 28 2017
[ 10.232727] Hardware name: AppliedMicro X-Gene Mustang Board/X-Gene
Mustang Board, BIOS 3.07.09 Feb 28 2017
[ 10.252464] task: ffff8001f3c78000 task.stack: ffff8001f3c74000
[ 10.252464] task: ffff8001f3c78000 task.stack: ffff8001f3c74000
[ 10.264383] PC is at xhci_plat_probe+0x2f0/0x700
[ 10.264383] PC is at xhci_plat_probe+0x2f0/0x700
[ 10.273727] LR is at xhci_plat_probe+0x34/0x700
[ 10.273727] LR is at xhci_plat_probe+0x34/0x700
[ 10.282906] pc : [<ffff00000874bf00>] lr : [<ffff00000874bc44>]
pstate: 00000145
[ 10.282906] pc : [<ffff00000874bf00>] lr : [<ffff00000874bc44>]
pstate: 00000145
[ 10.297909] sp : ffff8001f3c77c00
[ 10.297909] sp : ffff8001f3c77c00
[ 10.304608] x29: ffff8001f3c77c00 x28: 0000000000000000
[ 10.304608] x29: ffff8001f3c77c00 x28: 0000000000000000
[ 10.315360] x27: ffff000008eac808 x26: ffff000008db0454
[ 10.315360] x27: ffff000008eac808 x26: ffff000008db0454
[ 10.326113] x25: 000000000000001c x24: 0000000000000000
[ 10.326113] x25: 000000000000001c x24: 0000000000000000
[ 10.336814] x23: ffff000008fa32d0 x22: ffff8001f2bd1010
[ 10.336814] x23: ffff000008fa32d0 x22: ffff8001f2bd1010
[ 10.347532] x21: ffff8001f2bd1000 x20: ffff8001f2bd1010
[ 10.347532] x21: ffff8001f2bd1000 x20: ffff8001f2bd1010
[ 10.358215] x19: 00000000ffffffed x18: 0000000000000000
[ 10.358215] x19: 00000000ffffffed x18: 0000000000000000
[ 10.368950] x17: 0000000000030004 x16: 0000000000030000
[ 10.368950] x17: 0000000000030004 x16: 0000000000030000
[ 10.379642] x15: ffff8001f3f50400 x14: 0000000000000004
[ 10.379642] x15: ffff8001f3f50400 x14: 0000000000000004
[ 10.390403] x13: 0000000000000404 x12: 0000000000030000
[ 10.390403] x13: 0000000000000404 x12: 0000000000030000
[ 10.401173] x11: 0000000000030004 x10: ffff8001f3f50400
[ 10.401173] x11: 0000000000030004 x10: ffff8001f3f50400
[ 10.411864] x9 : 0000000000000000 x8 : 000000000000001c
[ 10.411864] x9 : 0000000000000000 x8 : 000000000000001c
[ 10.422616] x7 : ffff8001f3f50400 x6 : ffff8001f3f50400
[ 10.422616] x7 : ffff8001f3f50400 x6 : ffff8001f3f50400
[ 10.433360] x5 : 0000000000000000 x4 : 0000000000000000
[ 10.433360] x5 : 0000000000000000 x4 : 0000000000000000
[ 10.444103] x3 : ffff000008f245b8 x2 : ffff000008f24000
[ 10.444103] x3 : ffff000008f245b8 x2 : ffff000008f24000
[ 10.454864] x1 : 0000000000000000 x0 : 0000000000000000
[ 10.454864] x1 : 0000000000000000 x0 : 0000000000000000
[ 10.465600] Call trace:
[ 10.465600] Call trace:
[ 10.470546] Exception stack(0xffff8001f3c77a30 to 0xffff8001f3c77b60)
[ 10.470546] Exception stack(0xffff8001f3c77a30 to 0xffff8001f3c77b60)
[ 10.483561] 7a20:
00000000ffffffed 0001000000000000
[ 10.483561] 7a20:
00000000ffffffed 0001000000000000
[ 10.499386] 7a40: ffff8001f3c77c00 ffff00000874bf00
ffff8001f3c77a80 ffff00000896a3a0
[ 10.499386] 7a40: ffff8001f3c77c00 ffff00000874bf00
ffff8001f3c77a80 ffff00000896a3a0
[ 10.515312] 7a60: 0000000000000000 ffff8001f4c29758
000000000000000c 0000000000000000
[ 10.515312] 7a60: 0000000000000000 ffff8001f4c29758
000000000000000c 0000000000000000
[ 10.531110] 7a80: ffff8001f3c77a90 ffff000008964e6c
ffff8001f3c77b20 ffff00000896510c
[ 10.531110] 7a80: ffff8001f3c77a90 ffff000008964e6c
ffff8001f3c77b20 ffff00000896510c
[ 10.546908] 7aa0: 0000000000000001 ffff8001f4814a90
ffff8001f4814a80 ffff00000903efb0
[ 10.546908] 7aa0: 0000000000000001 ffff8001f4814a90
ffff8001f4814a80 ffff00000903efb0
[ 10.562714] 7ac0: 00000000014000c0 0000000080000000
0000000000000000 0000000000000000
[ 10.562714] 7ac0: 00000000014000c0 0000000080000000
0000000000000000 0000000000000000
[ 10.578564] 7ae0: ffff000008f24000 ffff000008f245b8
0000000000000000 0000000000000000
[ 10.578564] 7ae0: ffff000008f24000 ffff000008f245b8
0000000000000000 0000000000000000
[ 10.594336] 7b00: ffff8001f3f50400 ffff8001f3f50400
000000000000001c 0000000000000000
[ 10.594336] 7b00: ffff8001f3f50400 ffff8001f3f50400
000000000000001c 0000000000000000
[ 10.610228] 7b20: ffff8001f3f50400 0000000000030004
0000000000030000 0000000000000404
[ 10.610228] 7b20: ffff8001f3f50400 0000000000030004
0000000000030000 0000000000000404
[ 10.626095] 7b40: 0000000000000004 ffff8001f3f50400
0000000000030000 0000000000030004
[ 10.626095] 7b40: 0000000000000004 ffff8001f3f50400
0000000000030000 0000000000030004
[ 10.641866] [<ffff00000874bf00>] xhci_plat_probe+0x2f0/0x700
[ 10.641866] [<ffff00000874bf00>] xhci_plat_probe+0x2f0/0x700
[ 10.653277] [<ffff0000085787f8>] platform_drv_probe+0x58/0xc0
[ 10.653277] [<ffff0000085787f8>] platform_drv_probe+0x58/0xc0
[ 10.664894] [<ffff000008576a64>] driver_probe_device+0x214/0x2d0
[ 10.664894] [<ffff000008576a64>] driver_probe_device+0x214/0x2d0
[ 10.676986] [<ffff000008576bcc>] __driver_attach+0xac/0xb0
[ 10.676986] [<ffff000008576bcc>] __driver_attach+0xac/0xb0
[ 10.688093] [<ffff000008574d08>] bus_for_each_dev+0x60/0xa0
[ 10.688093] [<ffff000008574d08>] bus_for_each_dev+0x60/0xa0
[ 10.699355] [<ffff000008576380>] driver_attach+0x20/0x28
[ 10.699355] [<ffff000008576380>] driver_attach+0x20/0x28
[ 10.710073] [<ffff000008575ed0>] bus_add_driver+0x110/0x230
[ 10.710073] [<ffff000008575ed0>] bus_add_driver+0x110/0x230
[ 10.721447] [<ffff000008577540>] driver_register+0x60/0xf8
[ 10.721447] [<ffff000008577540>] driver_register+0x60/0xf8
[ 10.732606] [<ffff000008578730>] __platform_driver_register+0x40/0x48
[ 10.732606] [<ffff000008578730>] __platform_driver_register+0x40/0x48
[ 10.745642] [<ffff000008df43e8>] xhci_plat_init+0x2c/0x34
[ 10.745642] [<ffff000008df43e8>] xhci_plat_init+0x2c/0x34
[ 10.756610] [<ffff000008083150>] do_one_initcall+0x38/0x120
[ 10.756610] [<ffff000008083150>] do_one_initcall+0x38/0x120
[ 10.767892] [<ffff000008db0cf4>] kernel_init_freeable+0x188/0x228
[ 10.767892] [<ffff000008db0cf4>] kernel_init_freeable+0x188/0x228
[ 10.780244] [<ffff000008973258>] kernel_init+0x10/0x100
[ 10.780244] [<ffff000008973258>] kernel_init+0x10/0x100
[ 10.790805] [<ffff000008082ec0>] ret_from_fork+0x10/0x50
[ 10.790805] [<ffff000008082ec0>] ret_from_fork+0x10/0x50
[ 10.801532] ---[ end trace 505c859fb1949e61 ]---
[ 10.801532] ---[ end trace 505c859fb1949e61 ]---
[ 10.810886] ata3: SATA link down (SStatus 0 SControl 4300)
[ 10.810886] ata3: SATA link down (SStatus 0 SControl 4300)
[ 10.822079] xhci-hcd: probe of xhci-hcd.0.auto failed with error -5
[ 10.822079] xhci-hcd: probe of xhci-hcd.0.auto failed with error -5
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH v2 1/1] usb:xhci: update condition to select bus->sysdev from parent device
2017-08-24 2:53 ` Thang Q. Nguyen
@ 2017-09-05 11:14 ` Mathias Nyman
[not found] ` <CAKrQpSvP9nwCM7C4cxiwbvOqk-s=CxaoOJ8tCaYBCJvZ=rcUrw@mail.gmail.com>
0 siblings, 1 reply; 4+ messages in thread
From: Mathias Nyman @ 2017-09-05 11:14 UTC (permalink / raw)
To: Thang Q. Nguyen, Mathias Nyman, Greg Kroah-Hartman, linux-usb,
linux-kernel
Cc: Tung Nguyen, Phong Vo, Loc Ho, patches, Adam Wallis
On 24.08.2017 05:53, Thang Q. Nguyen wrote:
> On Sat, Aug 19, 2017 at 10:43 AM, Thang Q. Nguyen <tqnguyen@apm.com> wrote:
>> From: "Thang Q. Nguyen" <tqnguyen@apm.com>
>>
>> For commit 4c39d4b949d3 ("usb: xhci: use bus->sysdev for DMA
>> configuration"), sysdev points to devices known to the system firmware
>> or hardware for DMA parameters.
>> However, the parent of the system firmware/hardware device checking
>> logic does not work in ACPI boot mode. This patch updates the formulation
>> to check this case in both DT and ACPI.
>>
>> Signed-off-by: Tung Nguyen <tunguyen@apm.com>
>> Signed-off-by: Thang Q. Nguyen <tqnguyen@apm.com>
>> ---
>> Change since v1:
>> - Update codes to work with kernel 4.13-rc5
>> ---
>> drivers/usb/host/xhci-plat.c | 5 ++++-
>> 1 file changed, 4 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
>> index c04144b..1bb9729 100644
>> --- a/drivers/usb/host/xhci-plat.c
>> +++ b/drivers/usb/host/xhci-plat.c
>> @@ -187,7 +187,10 @@ static int xhci_plat_probe(struct platform_device *pdev)
>> * 3. xhci_plat is grandchild of a pci device (dwc3-pci)
>> */
>> sysdev = &pdev->dev;
>> - if (sysdev->parent && !sysdev->of_node && sysdev->parent->of_node)
>> + if (sysdev->parent && !is_of_node(sysdev->fwnode) &&
>> + !is_acpi_device_node(sysdev->fwnode) &&
>> + (is_of_node(sysdev->parent->fwnode) ||
>> + is_acpi_device_node(sysdev->parent->fwnode)))
>> sysdev = sysdev->parent;
>> #ifdef CONFIG_PCI
>> else if (sysdev->parent && sysdev->parent->parent &&
>> --
>> 1.8.3.1
>>
> Is there any comment about the patch?
> With current kernel (4.13.0-rc6), booting the Linux using ACPI boot,
> kernel is crashed right after probing the USB DWC3 driver with the
> following messages:
That should work, but the if statements are getting quite elaborate.
How about replacing it all with:
- sysdev = &pdev->dev;
- if (sysdev->parent && !sysdev->of_node && sysdev->parent->of_node)
- sysdev = sysdev->parent;
-#ifdef CONFIG_PCI
- else if (sysdev->parent && sysdev->parent->parent &&
- sysdev->parent->parent->bus == &pci_bus_type)
- sysdev = sysdev->parent->parent;
-#endif
+
+ for (sysdev = &pdev->dev; sysdev; sysdev = sysdev->parent) {
+ if (is_of_node(sysdev->fwnode) ||
+ is_acpi_device_node(sysdev->fwnode))
+ break;
+ #ifdef CONFIG_PCI
+ else if (sysdev->bus == &pci_bus_type)
+ break;
+ #endif
+ }
+
+ if (!sysdev)
+ sysdev = &pdev->dev
Does that work for you?
-Mathias
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2017-09-06 6:28 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2017-08-19 3:43 [PATCH v2 1/1] usb:xhci: update condition to select bus->sysdev from parent device Thang Q. Nguyen
2017-08-24 2:53 ` Thang Q. Nguyen
2017-09-05 11:14 ` Mathias Nyman
[not found] ` <CAKrQpSvP9nwCM7C4cxiwbvOqk-s=CxaoOJ8tCaYBCJvZ=rcUrw@mail.gmail.com>
2017-09-06 6:32 ` Mathias Nyman
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