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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <YaX/+CkUM+hjVqjP@hovoldconsulting.com>
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Looks like this commit message is outdated.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