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Date: Fri, 20 Nov 2020 10:37:47 +0100 From: Johan Hovold <johan@...nel.org> To: Davidlohr Bueso <dave@...olabs.net> Cc: johan@...nel.org, dbueso@...e.de, linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org Subject: Re: [PATCH v3] USB: serial: mos7720: defer state restore to a workqueue On Thu, Nov 19, 2020 at 08:53:00PM -0800, Davidlohr Bueso wrote: > The parallel port restore operation currently defers writes > to a tasklet, if it sees a locked disconnect mutex. The > driver goes to a lot of trouble to ensure writes happen > in a non-blocking context, but things can be greatly > simplified if it's done in regular process context and > this is not a system performance critical path. As such, > instead of doing the state restore writes in irq context, > use a workqueue and just do regular synchronous writes. > > In addition to the cleanup, this also imposes less on the > overall system as tasklets have been deprecated because > of it's softirq implications, potentially blocking a higher > priority task from running. > > Signed-off-by: Davidlohr Bueso <dbueso@...e.de> Now applied, thanks! Johan
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