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SubjectRe: [PATCH] serdev: Don't claim unsupported serial devices
Hans de Goede <> writes:

> Hi,
> On 18-12-2019 07:56, Punit Agrawal wrote:
>> Serdev sub-system claims all serial devices that are not already
>> enumerated. As a result, no device node is created for serial port on
>> certain boards such as the Apollo Lake based UP2. This has the
>> unintended consequence of not being able to raise the login prompt via
>> serial connection.
>> Introduce a blacklist to reject devices that should not be treated as
>> a serdev device. Add the Intel HS UART peripheral ids to the blacklist
>> to bring back serial port on SoCs carrying them.
>> Cc:
>> Signed-off-by: Punit Agrawal <>
>> Cc: Rob Herring <>
>> Cc: Greg Kroah-Hartman <>
>> Cc: Johan Hovold <>
>> Cc: Hans de Goede <>
> Thank you for addressing this long standing issue.

I am surprised there hasn't been more people complaining! Maybe even on
x86 mainline isn't that widely used on development boards.

> The basic approach here looks good to me, once the minor
> comments from other reviewers are addressed you can add my:
> Acked-by: Hans de Goede <>



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