Re: [PATCH v4 3/5] spi: spi-qpic: Add qpic spi nand driver support

From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
To: "Alex G." <mr.nuke.me@gmail.com>,
	Md Sadre Alam <quic_mdalam@quicinc.com>,
	andersson@kernel.org, konrad.dybcio@linaro.org,
	broonie@kernel.org, robh@kernel.org,
	krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org,
	miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com,
	manivannan.sadhasivam@linaro.org, neil.armstrong@linaro.org,
	daniel@makrotopia.org, arnd@arndb.de,
	chris.packham@alliedtelesis.co.nz,
	christophe.kerello@foss.st.com, linux-arm-msm@vger.kernel.org,
	linux-spi@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org
Cc: quic_srichara@quicinc.com, quic_varada@quicinc.com
Subject: Re: [PATCH v4 3/5] spi: spi-qpic: Add qpic spi nand driver support
Date: Sun, 7 Apr 2024 20:54:47 +0200	[thread overview]
Message-ID: <5fe5396e-c628-49e1-bec3-770847f061e5@linaro.org> (raw)
In-Reply-To: <1c803d8c-80b2-47a9-bc8c-8b13cbfc6841@gmail.com>

On 07/04/2024 19:48, Alex G. wrote:
> On 3/8/24 03:17, Md Sadre Alam wrote:
>> Add qpic spi nand driver support. The spi nand
>> driver currently supported the below commands.
>>
>> -- RESET
>> -- READ ID
>> -- SET FEATURE
>> -- GET FEATURE
>> -- READ PAGE
>> -- WRITE PAGE
>> -- ERASE PAGE
>>
>> Co-developed-by: Sricharan Ramabadhran <quic_srichara@quicinc.com>
>> Signed-off-by: Sricharan Ramabadhran <quic_srichara@quicinc.com>
>> Co-developed-by: Varadarajan Narayanan <quic_varada@quicinc.com>
>> Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com>
>> Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
>> ---
> 
> For the entire series:
> 
> Tested-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
> 
>> diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
>> index bc7021da2fe9..63764e943d82 100644
>> --- a/drivers/spi/Kconfig
>> +++ b/drivers/spi/Kconfig
>> @@ -882,6 +882,14 @@ config SPI_QCOM_QSPI
>>   	help
>>   	  QSPI(Quad SPI) driver for Qualcomm QSPI controller.
>>   
>> +config SPI_QPIC_SNAND
>> +	tristate "QPIC SNAND controller"
>> +	depends on ARCH_QCOM || COMPILE_TEST
> 
> Here, it needs to 'select QPIC_COMMON`. Otherwise it can run into 
> unresolved symbols:
> 
> : drivers/spi/spi-qpic-snand.o: in function `snandc_set_reg':
>   drivers/spi/spi-qpic-snand.c:56:(.text+0x484): undefined reference to 
> `qcom_offset_to_nandc_reg'

No, do not select user-visible symbols. If you observe such issues then
either stubs are missing or depends on.

Best regards,
Krzysztof