linux-kernel - Re: [PATCH] phy: qcom-qusb2: add NVMEM dependency

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Date:   Mon, 10 Apr 2017 16:01:31 +0530
From:   Kishon Vijay Abraham I <kishon@...com>
To:     Tobias Regnery <tobias.regnery@...il.com>,
        <vivek.gautam@...eaurora.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] phy: qcom-qusb2: add NVMEM dependency



On Monday 10 April 2017 03:22 PM, Tobias Regnery wrote:
> With CONFIG_NVMEM=m and CONFIG_PHY_QCOM_QUSB2=y we get a link error from
> calls to devm_nvmem_cell_get and nvmem_cell_read:
> 
> drivers/built-in.o: In function `qusb2_phy_probe':
> binder.c:(.text+0x4750): undefined reference to `devm_nvmem_cell_get'
> drivers/built-in.o: In function `qusb2_phy_init':
> binder.c:(.text+0x489c): undefined reference to `nvmem_cell_read'
> 
> Fix this by adding a Kconfig dependency to ensure we can only have this
> driver built in when the nvmem functions are also built in or we see the
> empty stub functions. We can still build this driver as a module when the
> nvmem core is build as module, too.
> 
> Fixes: deffad633413 ("phy: qcom-qusb2: New driver for QUSB2 PHY on Qcom chips")
> Signed-off-by: Tobias Regnery <tobias.regnery@...il.com>

merged, thanks!

-Kishon
> ---
>  drivers/phy/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
> index c120071fd2c8..30a2a612ff20 100644
> --- a/drivers/phy/Kconfig
> +++ b/drivers/phy/Kconfig
> @@ -450,6 +450,7 @@ config PHY_QCOM_QMP
>  config PHY_QCOM_QUSB2
>  	tristate "Qualcomm QUSB2 PHY Driver"
>  	depends on OF && (ARCH_QCOM || COMPILE_TEST)
> +	depends on NVMEM || !NVMEM
>  	select GENERIC_PHY
>  	help
>  	  Enable this to support the HighSpeed QUSB2 PHY transceiver for USB
>