linux-kernel - Re: [PATCH v3 03/11] i2c: nomadik: simplify IRQ masking logic

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Message-ID: <422szb2dtgnq56xznfqsqtqs3dai2jipnntrp6yb2og353whs7@g4ia5ynnmqu6>
Date: Fri, 8 Mar 2024 00:01:48 +0100
From: Andi Shyti <andi.shyti@...nel.org>
To: Théo Lebrun <theo.lebrun@...tlin.com>
Cc: Linus Walleij <linus.walleij@...aro.org>, 
	Rob Herring <robh+dt@...nel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
	Conor Dooley <conor+dt@...nel.org>, Thomas Bogendoerfer <tsbogend@...ha.franken.de>, 
	linux-arm-kernel@...ts.infradead.org, linux-i2c@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-mips@...r.kernel.org, 
	Gregory Clement <gregory.clement@...tlin.com>, Vladimir Kondratiev <vladimir.kondratiev@...ileye.com>, 
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>, Tawfik Bayouk <tawfik.bayouk@...ileye.com>
Subject: Re: [PATCH v3 03/11] i2c: nomadik: simplify IRQ masking logic

Hi Theo,

On Wed, Mar 06, 2024 at 06:59:23PM +0100, Théo Lebrun wrote:
> IRQ_MASK and I2C_CLEAR_ALL_INTS both mask available interrupts. IRQ_MASK
> removes top options (bits 29-31). I2C_CLEAR_ALL_INTS removes reserved
> options including top bits. Keep the latter.
> 
> 31  29  27  25  23  21  19  17  15  13  11  09  07  05  03  01
>   30  28  26  24  22  20  18  16  14  12  10  08  06  04  02  00
> --- IRQ_MASK: --------------------------------------------------
>       1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
> 0 0 0
> --- I2C_CLEAR_ALL_INTS: ----------------------------------------
>       1     1 1       1 1 1 1 1                   1 1 1 1 1 1 1
> 0 0 0   0 0     0 0 0           0 0 0 0 0 0 0 0 0
> 
> Notice I2C_CLEAR_ALL_INTS is more restrictive than IRQ_MASK.
> 
> Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
> Signed-off-by: Théo Lebrun <theo.lebrun@...tlin.com>

You did answer my question in v2, thanks, Theo!

Reviewed-by: Andi Shyti <andi.shyti@...nel.org>

Andi