From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: Re: [PATCH v2 24/36] platform/x86: intel_scu_ipc: Add function to
 remove SCU IPC
Date: Wed, 8 Jan 2020 19:28:25 +0200
Message-ID: <20200108172825.GV32742@smile.fi.intel.com>
References: <20200108114201.27908-1-mika.westerberg@linux.intel.com>
 <20200108114201.27908-25-mika.westerberg@linux.intel.com>
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To: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Darren Hart <dvhart@infradead.org>, Lee Jones <lee.jones@linaro.org>, Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>, "H . Peter Anvin" <hpa@zytor.com>, x86@kernel.org, Zha Qipeng <qipeng.zha@intel.com>, Rajneesh Bhardwaj <rajneesh.bhardwaj@linux.intel.com>, "David E . Box" <david.e.box@linux.intel.com>, Guenter Roeck <linux@roeck-us.net>, Heikki Krogerus <heikki.krogerus@linux.intel.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Wim Van Sebroeck <wim@linux-watchdog.org>, platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org
List-Id: platform-driver-x86.vger.kernel.org

On Wed, Jan 08, 2020 at 02:41:49PM +0300, Mika Westerberg wrote:
> Drivers such as intel_pmc_ipc.c can be unloaded as well so in order to
> support those in this driver add a new function that can be called to
> remove the SCU IPC if the driver is unloaded.
> 

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
> ---
>  arch/x86/include/asm/intel_scu_ipc.h |  1 +
>  drivers/platform/x86/intel_scu_ipc.c | 18 ++++++++++++++++++
>  2 files changed, 19 insertions(+)
> 
> diff --git a/arch/x86/include/asm/intel_scu_ipc.h b/arch/x86/include/asm/intel_scu_ipc.h
> index 9895b60386c5..250127eb1e38 100644
> --- a/arch/x86/include/asm/intel_scu_ipc.h
> +++ b/arch/x86/include/asm/intel_scu_ipc.h
> @@ -32,6 +32,7 @@ struct intel_scu_ipc_pdata {
>  
>  struct intel_scu_ipc_dev *
>  intel_scu_ipc_probe(struct device *dev, const struct intel_scu_ipc_pdata *pdata);
> +void intel_scu_ipc_remove(struct intel_scu_ipc_dev *scu);
>  
>  struct intel_scu_ipc_dev *intel_scu_ipc_dev_get(void);
>  void intel_scu_ipc_dev_put(struct intel_scu_ipc_dev *scu);
> diff --git a/drivers/platform/x86/intel_scu_ipc.c b/drivers/platform/x86/intel_scu_ipc.c
> index cc29f504adcf..9fa0ea95198b 100644
> --- a/drivers/platform/x86/intel_scu_ipc.c
> +++ b/drivers/platform/x86/intel_scu_ipc.c
> @@ -566,3 +566,21 @@ intel_scu_ipc_probe(struct device *dev, const struct intel_scu_ipc_pdata *pdata)
>  	return scu;
>  }
>  EXPORT_SYMBOL_GPL(intel_scu_ipc_probe);
> +
> +/**
> + * intel_scu_ipc_remove() - Remove SCU IPC
> + * @scu: SCU IPC handle
> + *
> + * This unregisters the SCU IPC device and releases the interrupt.
> + */
> +void intel_scu_ipc_remove(struct intel_scu_ipc_dev *scu)
> +{
> +	mutex_lock(&ipclock);
> +	if (!WARN_ON(!scu->dev)) {
> +		if (scu->irq > 0)
> +			devm_free_irq(scu->dev, scu->irq, scu);
> +		scu->dev = NULL;
> +	}
> +	mutex_unlock(&ipclock);
> +}
> +EXPORT_SYMBOL_GPL(intel_scu_ipc_remove);
> -- 
> 2.24.1
> 

-- 
With Best Regards,
Andy Shevchenko