linux-kernel - Re: [RFC PATCH 0/4] Drop custom logging

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Date:   Thu, 19 Jan 2023 10:34:16 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Umang Jain <umang.jain@...asonboard.com>
Cc:     linux-staging@...ts.linux.dev,
        linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-media@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Stefan Wahren <stefan.wahren@...e.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Adrien Thierry <athierry@...hat.com>,
        Dan Carpenter <error27@...il.com>,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        Kieran Bingham <kieran.bingham@...asonboard.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>
Subject: Re: [RFC PATCH 0/4] Drop custom logging

On Wed, Jan 18, 2023 at 05:28:06PM +0530, Umang Jain wrote:
> Drop custom logging from the vchiq interface.
> Mostly of them are replaced with dev_dbg and friends
> and/or pr_info and friends. 

Everything should be dev_*() calls, there should never be a pr_* call in
a driver.

> The debugfs log levels (in 4/4) are mapped to kernel
> logs levels (coming from include/linux/kern_levels.h)
> Would like some thoughts on it as I am not sure (hence
> marking this is RFC)

Do not have any "custom" debugging controls in a driver, they are not
special and should follow the whole rest of the kernel.  Just remove
them all and rely on the existing dev_*() calls instead please.

thanks,

greg k-h