From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 929DE3FD4; Thu, 26 Sep 2024 12:34:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727354070; cv=none; b=IfXUJlAF9UWxMcyIEtUxcT1AJTD3n/DbCSFCddECVcN2+ZQgCoFuRZEHDkTZ2zLQMX+t9wVfBGLkZVR3nPETh7VxsQ97Z6y4fkuaCp3IMNc1zSVVg+V3T4nGgwOcc2AfYqxnxseHptpA5PAqN+fvew3VcUAEnHlWmYA0+++AJyU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727354070; c=relaxed/simple; bh=m+m/3s0/CVqCQPYMO71jOIA5IOHOwjtSlfkxiW7PG1Y=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=RniRL0u54Q9zDtSce/HVzeL+qTE0qhredfXJ9k68ciSsqv0aWNo1A52GawzhMvsfbsxvfP9yE4kgOtLxGrcITipwk5ibiFEt5srGhcat55KtnUeCUDmd5+E0DHQQq19LGdQPm1QG2IjhKKfgWe6HqVue1maESN+nZjJUwSXlJs0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=TjkthlS2; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="TjkthlS2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id F0BCCC4CEC9; Thu, 26 Sep 2024 12:34:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1727354070; bh=m+m/3s0/CVqCQPYMO71jOIA5IOHOwjtSlfkxiW7PG1Y=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=TjkthlS2zMN4U4dat+6LFbPMRbXHxynWSnbz7aAAdEzqYg+yb66Pny+Ip/yFMYkhU x+5b6jIp5CAv2CMtY6useE4QAK3VRMjj9XvAUl0Yr7MYgAzYeFj0ydkEKZYirRi2bD oDj3C1TsCUZFPy7VAvSt3O8e1dA+hY0PrELATtCUDpoiGBGuETPC3Whhso6DqSfPOI SvpobcyU8axZYBmTEV2nGu7SsZ76d1oVgK1MCCLgW8VFI57/Du2vptUC91wigxWhAm dkDXOWH9LNer5zWxJFaxx70vW0lKBD2EwcQXixuiOSGCVfrEHgQ7A/8RV0q+Ti8ipl i8r8eAbbWFfnw== Message-ID: <43447165-37f9-4b35-ace6-8d32760f75a8@kernel.org> Date: Thu, 26 Sep 2024 14:34:26 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 0/2] Add framework for user controlled driver probes To: Nayeemahmed Badebade , Greg KH Cc: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, rafael@kernel.org, yoshihiro.toyama@sony.com, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org References: <20240911142319.3435746-1-nayeemahmed.badebade@sony.com> <2024091327-repacking-avatar-ec23@gregkh> <26fed82b-7c60-4fda-8951-b22654728743@kernel.org> <2024091747-monorail-unbutton-7ebd@gregkh> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 26/09/2024 13:07, Nayeemahmed Badebade wrote: >> >>>> not required at the time of booting. >>>> Example: drivers/pci/controller/dwc/pci-imx6.c >> >> Just this one? I don't see anything obvious that can't turn that into a >> module, have you tried? What went wrong? >> > > Yes we have tried building it as a module. > This driver currently registers abort handler for pci using function > hook_fault_code() on arm. This function is not exported and marked with __init > tag. So we can't use it post boot. Then this is something to fix. > Also from past attempt made to modularize this driver in community, we saw the > hook is not safe to be used post boot. > Reference: > https://lore.kernel.org/linux-arm-kernel/1454889644-27830-2-git-send-email-paul.gortmaker@windriver.com/T/#m8995c6dcc40c54baef0665a7ee16d4209cb59655 Best regards, Krzysztof