Thread (18 messages) 18 messages, 4 authors, 2021-07-21

Re: [PATCH] usb: host: ohci-at91: suspend/resume ports after/before OHCI accesses

From: Alan Stern <stern@rowland.harvard.edu>
Date: 2021-06-23 14:19:10
Also in: linux-arm-kernel, lkml

On Wed, Jun 23, 2021 at 02:09:16PM +0000, Claudiu.Beznea@microchip.com wrote:
On 23.06.2021 16:59, Alan Stern wrote:
quoted
One thing you might consider changing: The name of the
ohci_at91_port_suspend routine is misleading.  It doesn't really
handle suspending the port; instead it handles the clocks that drive
the entire OHCI controller.  Right?
It does both as far as I can tell at the moment.
But the name suggests that it only handles suspending a port.  That's 
misleading.

And the way it is used in the SetPortFeature(USB_PORT_FEAT_SUSPEND) 
case in ohci_at91_hub_control is just plain wrong.  It won't merely 
suspend a single port; it will disable the entire OHCI controller.

Alan Stern
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