linux-kernel - Re: [PATCH 0/2] i2c: i801: Force no IRQ for Dell Latitude E7450

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Date:   Sun, 29 Oct 2023 18:17:06 +0100
From:   Wolfram Sang <wsa@...nel.org>
To:     Marius Hoch <mail@...iushoch.de>
Cc:     Jean Delvare <jdelvare@...e.com>, linux-i2c@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/2] i2c: i801: Force no IRQ for Dell Latitude E7450

On Sun, May 14, 2023 at 12:36:32PM +0200, Marius Hoch wrote:
> The Dell Latitude E7450 uses IRQ 18 for the accelerometer,
> but also claims that the SMBus uses IRQ 18. This will
> result in:
> 
> i801_smbus 0000:00:1f.3: PCI INT C: failed to register GSI
> i801_smbus 0000:00:1f.3: Failed to enable SMBus PCI device (-16)
> i801_smbus: probe of 0000:00:1f.3 failed with error -16
> 
> Force the SMBus IRQ to IRQ_NOTCONNECTED in this case, so that
> we fall back to polling, which also seems to be what the (very
> dated) Windows 7 drivers on the Dell Latitude E7450 do.
> 
> This was tested on Dell Latitude E7450.
> 
> I chose to explicitly list all affected devices here, but
> alternatively it would be possible to do this programmatically:
> If the initial pcim_enable_device fails and we're on (any)
> Dell Latitude, re-try with IRQ_NOTCONNECTED.
> 
> Marius Hoch (2):
>   i2c: i801: Force no IRQ for Dell Latitude E7450
>   i2c: i801: Force no IRQ for further Dell Latitudes
> 
>  drivers/i2c/busses/i2c-i801.c | 34 ++++++++++++++++++++++++++++++++++
>  1 file changed, 34 insertions(+)

Where are we with this patch set? Other solution found already?
Discussion stalled? Too much other things going on?


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