From: Greg KH <gregkh@linuxfoundation.org>
To: Johan Hovold <johan@kernel.org>
Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/4] USB: serial: closing-wait fixes and cleanups
Date: Mon, 12 Apr 2021 11:52:56 +0200 [thread overview]
Message-ID: <YHQYeAJvkwe9+dbQ@kroah.com> (raw)
In-Reply-To: <20210412093815.736-1-johan@kernel.org>
On Mon, Apr 12, 2021 at 11:38:11AM +0200, Johan Hovold wrote:
> The port drain_delay parameter is used to add a time-based delay when
> closing the port in order to allow the transmit FIFO to drain in cases
> where we don't know how to tell if the FIFO is empty.
>
> This series removes a redundant time-based delay which is no longer
> needed, and documents the reason for two other uses where such a delay
> is needed to let the transmitter shift register clear. As it turns out,
> this is really only needed for one of the two device types handled by
> the ti_usb_3410_5052 driver.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
prev parent reply other threads:[~2021-04-12 9:57 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-12 9:38 [PATCH 0/4] USB: serial: closing-wait fixes and cleanups Johan Hovold
2021-04-12 9:38 ` [PATCH 1/4] USB: serial: f81232: drop time-based drain delay Johan Hovold
2021-04-12 9:38 ` [PATCH 2/4] USB: serial: io_ti: document reason for " Johan Hovold
2021-04-12 9:38 ` [PATCH 3/4] USB: serial: ti_usb_3410_5052: reduce drain delay to one char Johan Hovold
2021-04-12 9:38 ` [PATCH 4/4] USB: serial: ti_usb_3410_5052: drop drain delay for 3410 Johan Hovold
2021-04-12 9:52 ` Greg KH [this message]
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