linux-kernel - Re: [PATCH 0/2] i2c: rcar: add support for Gen4 devices

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: <ZQVWK9Q2YtbehvjW@shikoro>
Date:   Sat, 16 Sep 2023 09:15:55 +0200
From:   Wolfram Sang <wsa+renesas@...g-engineering.com>
To:     Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
Cc:     "linux-i2c@...r.kernel.org" <linux-i2c@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-renesas-soc@...r.kernel.org" 
        <linux-renesas-soc@...r.kernel.org>
Subject: Re: [PATCH 0/2] i2c: rcar: add support for Gen4 devices

Hi Shimoda-san,

> I tested the branch on the Spider, and then the i2c cannot be probed with the following errors:
> -----
> # dmesg | grep i2c
> [    1.528773] i2c_dev: i2c /dev entries driver
> [    1.533572] i2c-rcar e6500000.i2c: clk 395647/400000(133333333), round 46, CDF: 6 SMD 20 SCL gran 27

These values look good and match the values from Falcon.

> [    1.554646] i2c-rcar e6500000.i2c: request_channel failed for tx (-517)
> [    1.561487] i2c-rcar e6500000.i2c: request_channel failed for tx (-517)
> [    1.568133] i2c-rcar e6500000.i2c: request_channel failed for rx (-517)

-EPROBE_DEFER when requesting the DMA channel? This is weird, at first
glimpse this seems unrelated to my series. But you say v6.6-rc1 works
fine. Strange.

> I checked that the v6.6-rc1 (commit 0bb80ecc33a8) could worked correctly.
> JFYI, I pasted whole log at the end of this email. Should I do git bisect to find
> a bad commit on the branch?

Very kind of you but I think this is not needed. There is a Spider in
Kieran's lab and I will try to reproduce the issue there myself. If that
doesn't work, I'll come back to you.

Thank you for the report!

All the best,

   Wolfram


Download attachment "signature.asc" of type "application/pgp-signature" (834 bytes)