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Date: Sun, 25 May 2025 14:17:40 +0100
From: Jonathan Cameron <jic23@kernel.org>
To: Fabio Estevam <festevam@gmail.com>
Cc: linux-iio@vger.kernel.org, mazziesaccount@gmail.com, Fabio Estevam
 <festevam@denx.de>, stable@vger.kernel.org
Subject: Re: [PATCH v3 1/2] iio: adc: max1363: Fix
 MAX1363_4X_CHANS/MAX1363_8X_CHANS[]
Message-ID: <20250525141740.3c85e146@jic23-huawei>
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On Sun, 25 May 2025 08:55:45 -0300
Fabio Estevam <festevam@gmail.com> wrote:

> From: Fabio Estevam <festevam@denx.de>
> 
> Since commit 2718f15403fb ("iio: sanity check available_scan_masks array"),
> booting a board populated with a MAX11601 results in a flood of warnings:
> 
> max1363 1-0064: available_scan_mask 8 subset of 0. Never used
> max1363 1-0064: available_scan_mask 9 subset of 0. Never used
> max1363 1-0064: available_scan_mask 10 subset of 0. Never used
> max1363 1-0064: available_scan_mask 11 subset of 0. Never used
> max1363 1-0064: available_scan_mask 12 subset of 0. Never used
> max1363 1-0064: available_scan_mask 13 subset of 0. Never used
> ...
> 
> These warnings are caused by incorrect offsets used for differential
> channels in the MAX1363_4X_CHANS() and MAX1363_8X_CHANS() macros.
> 
> The max1363_mode_table[] defines the differential channel mappings as
> follows:
> 
> MAX1363_MODE_DIFF_SINGLE(0, 1, 1 << 12),
> MAX1363_MODE_DIFF_SINGLE(2, 3, 1 << 13),
> MAX1363_MODE_DIFF_SINGLE(4, 5, 1 << 14),
> MAX1363_MODE_DIFF_SINGLE(6, 7, 1 << 15),
> MAX1363_MODE_DIFF_SINGLE(8, 9, 1 << 16),
> MAX1363_MODE_DIFF_SINGLE(10, 11, 1 << 17),
> MAX1363_MODE_DIFF_SINGLE(1, 0, 1 << 18),
> MAX1363_MODE_DIFF_SINGLE(3, 2, 1 << 19),
> MAX1363_MODE_DIFF_SINGLE(5, 4, 1 << 20),
> MAX1363_MODE_DIFF_SINGLE(7, 6, 1 << 21),
> MAX1363_MODE_DIFF_SINGLE(9, 8, 1 << 22),
> MAX1363_MODE_DIFF_SINGLE(11, 10, 1 << 23),
> 
> Update the macros to follow this same pattern, ensuring that the scan masks
> are valid and preventing the warnings.
> 
> Cc: <stable@vger.kernel.org> #6.12
> Suggested-by: Jonathan Cameron <jic23@kernel.org>
> Signed-off-by: Fabio Estevam <festevam@denx.de>
I dropped the fixes tags and applied these already.

Thanks,

Jonathan