Re: [PATCH 5/9] usb: xhci-pci: Add support for reset controllers

Hi Nicolas,

On Tue, 2020-06-09 at 13:18 +0200, Nicolas Saenz Julienne wrote:

Hi Florian, thanks for the reviews!

On Mon, 2020-06-08 at 12:43 -0700, Florian Fainelli wrote:

quoted

On 6/8/2020 12:26 PM, Nicolas Saenz Julienne wrote:

quoted

Some atypical users of xhci-pci might need to manually reset their xHCI
controller before starting the HCD setup. Check if a reset controller
device is available to the PCI bus and trigger a reset.

Signed-off-by: Nicolas Saenz Julienne <redacted>
---
 drivers/usb/host/xhci-pci.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index ef513c2fb843..45f70facdfcd 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c

[...]

quoted

quoted

@@ -347,6 +349,13 @@ static int xhci_pci_probe(struct pci_dev *dev, const

struct pci_device_id *id)
 			return retval;
 	}
 
+	reset = devm_reset_control_get(&dev->bus->dev, NULL);

Should not this be devm_reset_control_get_optional()?

Yes, you're right.

Please use devm_reset_control_get_optional_exclusive() while you're at
it.

regards
Philipp

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel