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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: renesas.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: TYBPR01MB5341.jpnprd01.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 97e37858-44a6-4d04-3da9-08dbb90b3d7c X-MS-Exchange-CrossTenant-originalarrivaltime: 19 Sep 2023 12:23:32.9791 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 53d82571-da19-47e4-9cb4-625a166a4a2a X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: wevy8tV4Iqlgz1dcmygbCafSWyIPbQ5po3M4EoXTr+6Nm+msKJGjswPDvwLJ7Kyu5gBXiQIGQR+FTFXypAJNwZkhDCvhY2xMiCkzuG9hZxS68MdeFZlcXapx//+v2UJG X-MS-Exchange-Transport-CrossTenantHeadersStamped: TY3PR01MB11592 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Wolfram-san, > From: Wolfram Sang, Sent: Saturday, September 16, 2023 8:41 PM >=20 > Hi Shimoda-san, >=20 > I had a look now with Kieran's Spider and could reproduce your findings. > It is not a problem, though, because the system behaves the same with > plain v6.6-rc1. The only difference with my branch is that DEBUG is > enabled for the I2C driver, so we see all the messages regarding > EPROBE_DEFER with DMA. If you add DEBUG to plain v6.6-rc1, then you see > the same messages. But still, the busses get probed and they also get > DMA channels after some time when the DMA driver is finally loaded. So, > this really has nothing to do with the patches themselves, only with the > additions for debugging. Phew! Thank you for the investigation! I also confirmed that reverting the "DEBUG= " commit resolved the issue about the EPROBE_DEFER. > Thank you for reporting and testing, still! You're welcome! Best regards, Yoshihiro Shimoda > Wolfram