From: Wolfram Sang <wsa@the-dreams.de>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Kieran Bingham <kieran@ksquared.org.uk>,
Wolfram Sang <wsa+renesas@sang-engineering.com>,
Linux I2C <linux-i2c@vger.kernel.org>,
Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
Luca Ceresoli <luca@lucaceresoli.net>,
Jacopo Mondi <jacopo@jmondi.org>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Vladimir Zapolskiy <vz@mleia.com>
Subject: Re: [RFC PATCH 1/5] i2c: core: refactor scanning for a client
Date: Tue, 7 Jan 2020 12:23:11 +0100 [thread overview]
Message-ID: <20200107112311.GC1135@ninjato> (raw)
In-Reply-To: <CAMuHMdWM0PoqLuAP2qjCjejNQ8FaArnkAT0gnd96xp3yJKLE-A@mail.gmail.com>
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> > > https://lore.kernel.org/lkml/20191121135743.GA552517@kroah.com/
> >
> > Huh? This renders WARN completely useless, or? If somebody wants panic
> > on warn, this person should get it?
>
> I also have my doubts...
Good to know :)
> What other information will you have in the backtrace, that you don't have
> available inside the function?
> Would printing the i2c_driver name be sufficient?
Yes, but we don't have the client struct, only the adapter and the
address:
+static int i2c_scan_for_client(struct i2c_adapter *adap, unsigned short addr,
+ int (*probe)(struct i2c_adapter *adap, unsigned short addr))
And even if we had the client struct, it would be empty because for most
cases scanning happens before binding to the driver. We don't even have
the name/type in case of i2c_detect().
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next prev parent reply other threads:[~2020-01-07 11:23 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-31 16:13 [RFC PATCH 0/5] i2c: implement mechanism to retrieve an alias device Wolfram Sang
2019-12-31 16:13 ` [RFC PATCH 1/5] i2c: core: refactor scanning for a client Wolfram Sang
2020-01-01 16:45 ` Laurent Pinchart
2020-01-07 9:26 ` Kieran Bingham
2020-01-07 9:53 ` Geert Uytterhoeven
2020-01-07 9:58 ` Kieran Bingham
2020-01-07 10:25 ` Wolfram Sang
2020-01-07 10:36 ` Geert Uytterhoeven
2020-01-07 11:23 ` Wolfram Sang [this message]
2020-01-07 15:03 ` Luca Ceresoli
2020-01-07 16:45 ` Wolfram Sang
2020-01-07 16:52 ` Kieran Bingham
2019-12-31 16:13 ` [RFC PATCH 2/5] i2c: core: add new variant to check " Wolfram Sang
2020-01-01 16:49 ` Laurent Pinchart
2020-01-07 9:42 ` Kieran Bingham
2019-12-31 16:13 ` [RFC PATCH 3/5] i2c: core: add function to request an alias Wolfram Sang
2020-01-01 16:55 ` Laurent Pinchart
2020-01-02 18:58 ` Luca Ceresoli
2020-01-02 21:13 ` Wolfram Sang
2020-01-02 22:27 ` Luca Ceresoli
2020-01-03 0:10 ` Laurent Pinchart
2020-01-07 15:03 ` Luca Ceresoli
2020-01-07 17:13 ` Laurent Pinchart
2020-01-08 13:27 ` Wolfram Sang
2020-01-08 13:31 ` Laurent Pinchart
2020-01-08 13:38 ` Wolfram Sang
2020-01-08 13:22 ` Wolfram Sang
2020-01-08 13:19 ` Wolfram Sang
2020-01-08 13:29 ` Geert Uytterhoeven
2020-01-08 13:34 ` Laurent Pinchart
2020-01-02 21:03 ` Wolfram Sang
2020-01-21 9:05 ` Peter Rosin
2020-01-21 9:05 ` Peter Rosin
2020-01-07 9:40 ` Kieran Bingham
2020-01-07 17:11 ` Laurent Pinchart
2020-01-07 17:14 ` Kieran Bingham
2020-01-08 13:35 ` Wolfram Sang
2020-01-08 13:36 ` Laurent Pinchart
2019-12-31 16:13 ` [RFC PATCH 4/5] i2c: core: add simple caching to the 'alias' scanning Wolfram Sang
2020-01-07 9:59 ` Kieran Bingham
2020-01-21 9:22 ` Peter Rosin
2020-01-21 9:22 ` Peter Rosin
2019-12-31 16:14 ` [RFC PATCH 5/5] simple test case for the I2C alias functionality Wolfram Sang
2019-12-31 16:27 ` [RFC PATCH 0/5] i2c: implement mechanism to retrieve an alias device Wolfram Sang
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