From: Wolfram Sang <wsa@kernel.org>
To: Riwen Lu <luriwen@hotmail.com>
Cc: linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org,
xiongxin@kylinos.cn, Riwen Lu <luriwen@kylinos.cn>
Subject: Re: [PATCH v1] i2c: i2c-core-base: Modify the maximum idr id for i2c adapter
Date: Sun, 29 Oct 2023 18:25:37 +0100 [thread overview]
Message-ID: <ZT6VkUjzhy3/rEP2@shikoro> (raw)
In-Reply-To: <TYCP286MB2607A8F23BC707F4E4FD8859B1FF9@TYCP286MB2607.JPNP286.PROD.OUTLOOK.COM>
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> The Phytium i2c driver would register the i2c adapter with idr id 0 by
> calling function i2c_add_numbered_adapter(adap). Then, function
> idr_alloc(&i2c_adapter_idr, adap, adap->nr, adap->nr + 1, GFP_KERNEL)；
> allocate the idr failed because idr id adap->nr(It equal to _UID) has been
> allocated by MWV207 GPU, and print the following error:
>
> couldn't get idr
> i2c-phytium-platform PHYT0038:00: fail to add adapter: -16
i2c-phytium-platform is not an upstream driver, right? Why does it not
simply use i2c_add_adapter() instead of i2c_add_numbered_adapter()?
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prev parent reply other threads:[~2023-10-29 17:25 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-16 2:07 [PATCH v1] i2c: i2c-core-base: Modify the maximum idr id for i2c adapter Riwen Lu
2023-01-09 15:13 ` Wolfram Sang
2023-01-10 8:39 ` Riwen Lu
2023-10-29 17:25 ` Wolfram Sang [this message]
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