linux-kernel - Re: [PATCH 6/7] serial: 8250_omap: Drop the use of pm_runtime_irq

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Date:   Tue, 30 Nov 2021 11:42:00 +0100
From:   Johan Hovold <johan@...nel.org>
To:     Tony Lindgren <tony@...mide.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andy Shevchenko <andriy.shevchenko@...el.com>,
        Jiri Slaby <jirislaby@...nel.org>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Vignesh Raghavendra <vigneshr@...com>,
        linux-serial@...r.kernel.org, linux-omap@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: Re: [PATCH 6/7] serial: 8250_omap: Drop the use of
 pm_runtime_irq_safe()

On Mon, Nov 15, 2021 at 10:42:02AM +0200, Tony Lindgren wrote:
> We can finally drop the pm_runtime_irq_safe() usage for 8250_omap driver.
> 
> We already have the serial layer RX wake path fixed for power management.
> We no longer allow deeper idle states unless the kernel console has been
> detached, and we require that the RX wakeirq is configured.
> 
> For TX path, we now use the prep_tx() and uart_flush_tx() calls.

Looks like this commit message is outdated. These functions no longer
exist.

> To drop pm_runtime_irq_safe(), we remove all PM runtime calls from the
> interrupt context. If we ever see an interrupt for an idled port, we just
> bail out.
> 
> Signed-off-by: Tony Lindgren <tony@...mide.com>

Johan