[PATCH] mtd: rawnand: ingenic: Fix ingenic_ecc dependency

[PATCH] mtd: rawnand: ingenic: Fix ingenic_ecc dependency

[Paul Cercueil]

If MTD_NAND_JZ4780 is y and MTD_NAND_JZ4780_BCH is m,
which select CONFIG_MTD_NAND_INGENIC_ECC to m, building fails:

drivers/mtd/nand/raw/ingenic/ingenic_nand.o: In function `ingenic_nand_remove':
ingenic_nand.c:(.text+0x177): undefined reference to `ingenic_ecc_release'
drivers/mtd/nand/raw/ingenic/ingenic_nand.o: In function `ingenic_nand_ecc_correct':
ingenic_nand.c:(.text+0x2ee): undefined reference to `ingenic_ecc_correct'

To fix that, the ingenic_nand and ingenic_ecc modules have been fused
into one single module.
- The ingenic_ecc.c code is now compiled in only if
  $(CONFIG_MTD_NAND_INGENIC_ECC) is set. This is now a boolean instead
  of tristate.
- To avoid changing the module name, the ingenic_nand.c file is moved to
  ingenic_nand_drv.c. Then the module name is still ingenic_nand.
- Since ingenic_ecc.c is no more a module, the module-specific macros
  have been dropped, and the functions are no more exported for use by
  the ingenic_nand driver.

Fixes: 15de8c6efd0e ("mtd: rawnand: ingenic: Separate top-level and SoC specific code")
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Reported-by: Arnd Bergmann <arnd@arndb.de>
Reported-by: Hulk Robot <hulkci@huawei.com>
Cc: YueHaibing <yuehaibing@huawei.com>
Cc: stable@vger.kernel.org
---
 drivers/mtd/nand/raw/ingenic/Kconfig                     | 2 +-
 drivers/mtd/nand/raw/ingenic/Makefile                    | 4 +++-
 drivers/mtd/nand/raw/ingenic/ingenic_ecc.c               | 9 ---------
 .../raw/ingenic/{ingenic_nand.c => ingenic_nand_drv.c}   | 0
 4 files changed, 4 insertions(+), 11 deletions(-)
 rename drivers/mtd/nand/raw/ingenic/{ingenic_nand.c => ingenic_nand_drv.c} (100%)

diff --git a/drivers/mtd/nand/raw/ingenic/Kconfig b/drivers/mtd/nand/raw/ingenic/Kconfig
index 19a96ce515c1..66b7cffdb0c2 100644
--- a/drivers/mtd/nand/raw/ingenic/Kconfig
+++ b/drivers/mtd/nand/raw/ingenic/Kconfig
@@ -16,7 +16,7 @@ config MTD_NAND_JZ4780
 if MTD_NAND_JZ4780
 
 config MTD_NAND_INGENIC_ECC
-	tristate
+	bool
 
 config MTD_NAND_JZ4740_ECC
 	tristate "Hardware BCH support for JZ4740 SoC"
diff --git a/drivers/mtd/nand/raw/ingenic/Makefile b/drivers/mtd/nand/raw/ingenic/Makefile
index 1ac4f455baea..b63d36889263 100644
--- a/drivers/mtd/nand/raw/ingenic/Makefile
+++ b/drivers/mtd/nand/raw/ingenic/Makefile
@@ -2,7 +2,9 @@
 obj-$(CONFIG_MTD_NAND_JZ4740) += jz4740_nand.o
 obj-$(CONFIG_MTD_NAND_JZ4780) += ingenic_nand.o
 
-obj-$(CONFIG_MTD_NAND_INGENIC_ECC) += ingenic_ecc.o
+ingenic_nand-y += ingenic_nand_drv.o
+ingenic_nand-$(CONFIG_MTD_NAND_INGENIC_ECC) += ingenic_ecc.o
+
 obj-$(CONFIG_MTD_NAND_JZ4740_ECC) += jz4740_ecc.o
 obj-$(CONFIG_MTD_NAND_JZ4725B_BCH) += jz4725b_bch.o
 obj-$(CONFIG_MTD_NAND_JZ4780_BCH) += jz4780_bch.o
diff --git a/drivers/mtd/nand/raw/ingenic/ingenic_ecc.c b/drivers/mtd/nand/raw/ingenic/ingenic_ecc.c
index d3e085c5685a..c954189606f6 100644
--- a/drivers/mtd/nand/raw/ingenic/ingenic_ecc.c
+++ b/drivers/mtd/nand/raw/ingenic/ingenic_ecc.c
@@ -30,7 +30,6 @@ int ingenic_ecc_calculate(struct ingenic_ecc *ecc,
 {
 	return ecc->ops->calculate(ecc, params, buf, ecc_code);
 }
-EXPORT_SYMBOL(ingenic_ecc_calculate);
 
 /**
  * ingenic_ecc_correct() - detect and correct bit errors
@@ -51,7 +50,6 @@ int ingenic_ecc_correct(struct ingenic_ecc *ecc,
 {
 	return ecc->ops->correct(ecc, params, buf, ecc_code);
 }
-EXPORT_SYMBOL(ingenic_ecc_correct);
 
 /**
  * ingenic_ecc_get() - get the ECC controller device
@@ -111,7 +109,6 @@ struct ingenic_ecc *of_ingenic_ecc_get(struct device_node *of_node)
 	}
 	return ecc;
 }
-EXPORT_SYMBOL(of_ingenic_ecc_get);
 
 /**
  * ingenic_ecc_release() - release the ECC controller device
@@ -122,7 +119,6 @@ void ingenic_ecc_release(struct ingenic_ecc *ecc)
 	clk_disable_unprepare(ecc->clk);
 	put_device(ecc->dev);
 }
-EXPORT_SYMBOL(ingenic_ecc_release);
 
 int ingenic_ecc_probe(struct platform_device *pdev)
 {
@@ -159,8 +155,3 @@ int ingenic_ecc_probe(struct platform_device *pdev)
 	return 0;
 }
 EXPORT_SYMBOL(ingenic_ecc_probe);
-
-MODULE_AUTHOR("Alex Smith <alex@alex-smith.me.uk>");
-MODULE_AUTHOR("Harvey Hunt <harveyhuntnexus@gmail.com>");
-MODULE_DESCRIPTION("Ingenic ECC common driver");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/mtd/nand/raw/ingenic/ingenic_nand.c b/drivers/mtd/nand/raw/ingenic/ingenic_nand_drv.c
similarity index 100%
rename from drivers/mtd/nand/raw/ingenic/ingenic_nand.c
rename to drivers/mtd/nand/raw/ingenic/ingenic_nand_drv.c
-- 
2.21.0.593.g511ec345e18

Re: [PATCH] mtd: rawnand: ingenic: Fix ingenic_ecc dependency

[Miquel Raynal]

Hi Paul,

One question below.

Paul Cercueil <paul@crapouillou.net> wrote on Sat, 29 Jun 2019 03:22:48
+0200:

> If MTD_NAND_JZ4780 is y and MTD_NAND_JZ4780_BCH is m,
> which select CONFIG_MTD_NAND_INGENIC_ECC to m, building fails:
> 
> drivers/mtd/nand/raw/ingenic/ingenic_nand.o: In function `ingenic_nand_remove':
> ingenic_nand.c:(.text+0x177): undefined reference to `ingenic_ecc_release'
> drivers/mtd/nand/raw/ingenic/ingenic_nand.o: In function `ingenic_nand_ecc_correct':
> ingenic_nand.c:(.text+0x2ee): undefined reference to `ingenic_ecc_correct'
> 
> To fix that, the ingenic_nand and ingenic_ecc modules have been fused
> into one single module.
> - The ingenic_ecc.c code is now compiled in only if
>   $(CONFIG_MTD_NAND_INGENIC_ECC) is set. This is now a boolean instead
>   of tristate.
> - To avoid changing the module name, the ingenic_nand.c file is moved to
>   ingenic_nand_drv.c. Then the module name is still ingenic_nand.
> - Since ingenic_ecc.c is no more a module, the module-specific macros
>   have been dropped, and the functions are no more exported for use by
>   the ingenic_nand driver.

I am fine with this approach.

> 
> Fixes: 15de8c6efd0e ("mtd: rawnand: ingenic: Separate top-level and SoC specific code")
> Signed-off-by: Paul Cercueil <paul@crapouillou.net>
> Reported-by: Arnd Bergmann <arnd@arndb.de>
> Reported-by: Hulk Robot <hulkci@huawei.com>
> Cc: YueHaibing <yuehaibing@huawei.com>
> Cc: stable@vger.kernel.org
> ---
>  drivers/mtd/nand/raw/ingenic/Kconfig                     | 2 +-
>  drivers/mtd/nand/raw/ingenic/Makefile                    | 4 +++-
>  drivers/mtd/nand/raw/ingenic/ingenic_ecc.c               | 9 ---------
>  .../raw/ingenic/{ingenic_nand.c => ingenic_nand_drv.c}   | 0
>  4 files changed, 4 insertions(+), 11 deletions(-)
>  rename drivers/mtd/nand/raw/ingenic/{ingenic_nand.c => ingenic_nand_drv.c} (100%)
> 
> diff --git a/drivers/mtd/nand/raw/ingenic/Kconfig b/drivers/mtd/nand/raw/ingenic/Kconfig
> index 19a96ce515c1..66b7cffdb0c2 100644
> --- a/drivers/mtd/nand/raw/ingenic/Kconfig
> +++ b/drivers/mtd/nand/raw/ingenic/Kconfig
> @@ -16,7 +16,7 @@ config MTD_NAND_JZ4780
>  if MTD_NAND_JZ4780
>  
>  config MTD_NAND_INGENIC_ECC
> -	tristate
> +	bool
>  
>  config MTD_NAND_JZ4740_ECC
>  	tristate "Hardware BCH support for JZ4740 SoC"
> diff --git a/drivers/mtd/nand/raw/ingenic/Makefile b/drivers/mtd/nand/raw/ingenic/Makefile
> index 1ac4f455baea..b63d36889263 100644
> --- a/drivers/mtd/nand/raw/ingenic/Makefile
> +++ b/drivers/mtd/nand/raw/ingenic/Makefile
> @@ -2,7 +2,9 @@
>  obj-$(CONFIG_MTD_NAND_JZ4740) += jz4740_nand.o
>  obj-$(CONFIG_MTD_NAND_JZ4780) += ingenic_nand.o
>  
> -obj-$(CONFIG_MTD_NAND_INGENIC_ECC) += ingenic_ecc.o
> +ingenic_nand-y += ingenic_nand_drv.o
> +ingenic_nand-$(CONFIG_MTD_NAND_INGENIC_ECC) += ingenic_ecc.o
> +
>  obj-$(CONFIG_MTD_NAND_JZ4740_ECC) += jz4740_ecc.o
>  obj-$(CONFIG_MTD_NAND_JZ4725B_BCH) += jz4725b_bch.o
>  obj-$(CONFIG_MTD_NAND_JZ4780_BCH) += jz4780_bch.o
> diff --git a/drivers/mtd/nand/raw/ingenic/ingenic_ecc.c b/drivers/mtd/nand/raw/ingenic/ingenic_ecc.c
> index d3e085c5685a..c954189606f6 100644
> --- a/drivers/mtd/nand/raw/ingenic/ingenic_ecc.c
> +++ b/drivers/mtd/nand/raw/ingenic/ingenic_ecc.c
> @@ -30,7 +30,6 @@ int ingenic_ecc_calculate(struct ingenic_ecc *ecc,
>  {
>  	return ecc->ops->calculate(ecc, params, buf, ecc_code);
>  }
> -EXPORT_SYMBOL(ingenic_ecc_calculate);
>  
>  /**
>   * ingenic_ecc_correct() - detect and correct bit errors
> @@ -51,7 +50,6 @@ int ingenic_ecc_correct(struct ingenic_ecc *ecc,
>  {
>  	return ecc->ops->correct(ecc, params, buf, ecc_code);
>  }
> -EXPORT_SYMBOL(ingenic_ecc_correct);
>  
>  /**
>   * ingenic_ecc_get() - get the ECC controller device
> @@ -111,7 +109,6 @@ struct ingenic_ecc *of_ingenic_ecc_get(struct device_node *of_node)
>  	}
>  	return ecc;
>  }
> -EXPORT_SYMBOL(of_ingenic_ecc_get);
>  
>  /**
>   * ingenic_ecc_release() - release the ECC controller device
> @@ -122,7 +119,6 @@ void ingenic_ecc_release(struct ingenic_ecc *ecc)
>  	clk_disable_unprepare(ecc->clk);
>  	put_device(ecc->dev);
>  }
> -EXPORT_SYMBOL(ingenic_ecc_release);
>  
>  int ingenic_ecc_probe(struct platform_device *pdev)
>  {
> @@ -159,8 +155,3 @@ int ingenic_ecc_probe(struct platform_device *pdev)
>  	return 0;
>  }
>  EXPORT_SYMBOL(ingenic_ecc_probe);

Any reason to keep this one?

Thanks,
Miquèl

Re: [PATCH] mtd: rawnand: ingenic: Fix ingenic_ecc dependency

[Paul Cercueil]

Le lun. 1 juil. 2019 à 14:28, Miquel Raynal 
<miquel.raynal@bootlin.com> a écrit :
> Hi Paul,
> 
> One question below.
> 
> Paul Cercueil <paul@crapouillou.net> wrote on Sat, 29 Jun 2019 
> 03:22:48
> +0200:
> 
>>  If MTD_NAND_JZ4780 is y and MTD_NAND_JZ4780_BCH is m,
>>  which select CONFIG_MTD_NAND_INGENIC_ECC to m, building fails:
>> 
>>  drivers/mtd/nand/raw/ingenic/ingenic_nand.o: In function 
>> `ingenic_nand_remove':
>>  ingenic_nand.c:(.text+0x177): undefined reference to 
>> `ingenic_ecc_release'
>>  drivers/mtd/nand/raw/ingenic/ingenic_nand.o: In function 
>> `ingenic_nand_ecc_correct':
>>  ingenic_nand.c:(.text+0x2ee): undefined reference to 
>> `ingenic_ecc_correct'
>> 
>>  To fix that, the ingenic_nand and ingenic_ecc modules have been 
>> fused
>>  into one single module.
>>  - The ingenic_ecc.c code is now compiled in only if
>>    $(CONFIG_MTD_NAND_INGENIC_ECC) is set. This is now a boolean 
>> instead
>>    of tristate.
>>  - To avoid changing the module name, the ingenic_nand.c file is 
>> moved to
>>    ingenic_nand_drv.c. Then the module name is still ingenic_nand.
>>  - Since ingenic_ecc.c is no more a module, the module-specific 
>> macros
>>    have been dropped, and the functions are no more exported for use 
>> by
>>    the ingenic_nand driver.
> 
> I am fine with this approach.
> 
>> 
>>  Fixes: 15de8c6efd0e ("mtd: rawnand: ingenic: Separate top-level and 
>> SoC specific code")
>>  Signed-off-by: Paul Cercueil <paul@crapouillou.net>
>>  Reported-by: Arnd Bergmann <arnd@arndb.de>
>>  Reported-by: Hulk Robot <hulkci@huawei.com>
>>  Cc: YueHaibing <yuehaibing@huawei.com>
>>  Cc: stable@vger.kernel.org
>>  ---
>>   drivers/mtd/nand/raw/ingenic/Kconfig                     | 2 +-
>>   drivers/mtd/nand/raw/ingenic/Makefile                    | 4 +++-
>>   drivers/mtd/nand/raw/ingenic/ingenic_ecc.c               | 9 
>> ---------
>>   .../raw/ingenic/{ingenic_nand.c => ingenic_nand_drv.c}   | 0
>>   4 files changed, 4 insertions(+), 11 deletions(-)
>>   rename drivers/mtd/nand/raw/ingenic/{ingenic_nand.c => 
>> ingenic_nand_drv.c} (100%)
>> 
>>  diff --git a/drivers/mtd/nand/raw/ingenic/Kconfig 
>> b/drivers/mtd/nand/raw/ingenic/Kconfig
>>  index 19a96ce515c1..66b7cffdb0c2 100644
>>  --- a/drivers/mtd/nand/raw/ingenic/Kconfig
>>  +++ b/drivers/mtd/nand/raw/ingenic/Kconfig
>>  @@ -16,7 +16,7 @@ config MTD_NAND_JZ4780
>>   if MTD_NAND_JZ4780
>> 
>>   config MTD_NAND_INGENIC_ECC
>>  -	tristate
>>  +	bool
>> 
>>   config MTD_NAND_JZ4740_ECC
>>   	tristate "Hardware BCH support for JZ4740 SoC"
>>  diff --git a/drivers/mtd/nand/raw/ingenic/Makefile 
>> b/drivers/mtd/nand/raw/ingenic/Makefile
>>  index 1ac4f455baea..b63d36889263 100644
>>  --- a/drivers/mtd/nand/raw/ingenic/Makefile
>>  +++ b/drivers/mtd/nand/raw/ingenic/Makefile
>>  @@ -2,7 +2,9 @@
>>   obj-$(CONFIG_MTD_NAND_JZ4740) += jz4740_nand.o
>>   obj-$(CONFIG_MTD_NAND_JZ4780) += ingenic_nand.o
>> 
>>  -obj-$(CONFIG_MTD_NAND_INGENIC_ECC) += ingenic_ecc.o
>>  +ingenic_nand-y += ingenic_nand_drv.o
>>  +ingenic_nand-$(CONFIG_MTD_NAND_INGENIC_ECC) += ingenic_ecc.o
>>  +
>>   obj-$(CONFIG_MTD_NAND_JZ4740_ECC) += jz4740_ecc.o
>>   obj-$(CONFIG_MTD_NAND_JZ4725B_BCH) += jz4725b_bch.o
>>   obj-$(CONFIG_MTD_NAND_JZ4780_BCH) += jz4780_bch.o
>>  diff --git a/drivers/mtd/nand/raw/ingenic/ingenic_ecc.c 
>> b/drivers/mtd/nand/raw/ingenic/ingenic_ecc.c
>>  index d3e085c5685a..c954189606f6 100644
>>  --- a/drivers/mtd/nand/raw/ingenic/ingenic_ecc.c
>>  +++ b/drivers/mtd/nand/raw/ingenic/ingenic_ecc.c
>>  @@ -30,7 +30,6 @@ int ingenic_ecc_calculate(struct ingenic_ecc *ecc,
>>   {
>>   	return ecc->ops->calculate(ecc, params, buf, ecc_code);
>>   }
>>  -EXPORT_SYMBOL(ingenic_ecc_calculate);
>> 
>>   /**
>>    * ingenic_ecc_correct() - detect and correct bit errors
>>  @@ -51,7 +50,6 @@ int ingenic_ecc_correct(struct ingenic_ecc *ecc,
>>   {
>>   	return ecc->ops->correct(ecc, params, buf, ecc_code);
>>   }
>>  -EXPORT_SYMBOL(ingenic_ecc_correct);
>> 
>>   /**
>>    * ingenic_ecc_get() - get the ECC controller device
>>  @@ -111,7 +109,6 @@ struct ingenic_ecc *of_ingenic_ecc_get(struct 
>> device_node *of_node)
>>   	}
>>   	return ecc;
>>   }
>>  -EXPORT_SYMBOL(of_ingenic_ecc_get);
>> 
>>   /**
>>    * ingenic_ecc_release() - release the ECC controller device
>>  @@ -122,7 +119,6 @@ void ingenic_ecc_release(struct ingenic_ecc 
>> *ecc)
>>   	clk_disable_unprepare(ecc->clk);
>>   	put_device(ecc->dev);
>>   }
>>  -EXPORT_SYMBOL(ingenic_ecc_release);
>> 
>>   int ingenic_ecc_probe(struct platform_device *pdev)
>>   {
>>  @@ -159,8 +155,3 @@ int ingenic_ecc_probe(struct platform_device 
>> *pdev)
>>   	return 0;
>>   }
>>   EXPORT_SYMBOL(ingenic_ecc_probe);
> 
> Any reason to keep this one?

This one is called from the three ECC drivers, which can be modules,
so it still needs to be exported.

-Paul

Re: [PATCH] mtd: rawnand: ingenic: Fix ingenic_ecc dependency

[Miquel Raynal]

On Sat, 2019-06-29 at 01:22:48 UTC, Paul Cercueil wrote:
> If MTD_NAND_JZ4780 is y and MTD_NAND_JZ4780_BCH is m,
> which select CONFIG_MTD_NAND_INGENIC_ECC to m, building fails:
> 
> drivers/mtd/nand/raw/ingenic/ingenic_nand.o: In function `ingenic_nand_remove':
> ingenic_nand.c:(.text+0x177): undefined reference to `ingenic_ecc_release'
> drivers/mtd/nand/raw/ingenic/ingenic_nand.o: In function `ingenic_nand_ecc_correct':
> ingenic_nand.c:(.text+0x2ee): undefined reference to `ingenic_ecc_correct'
> 
> To fix that, the ingenic_nand and ingenic_ecc modules have been fused
> into one single module.
> - The ingenic_ecc.c code is now compiled in only if
>   $(CONFIG_MTD_NAND_INGENIC_ECC) is set. This is now a boolean instead
>   of tristate.
> - To avoid changing the module name, the ingenic_nand.c file is moved to
>   ingenic_nand_drv.c. Then the module name is still ingenic_nand.
> - Since ingenic_ecc.c is no more a module, the module-specific macros
>   have been dropped, and the functions are no more exported for use by
>   the ingenic_nand driver.
> 
> Fixes: 15de8c6efd0e ("mtd: rawnand: ingenic: Separate top-level and SoC specific code")
> Signed-off-by: Paul Cercueil <paul@crapouillou.net>
> Reported-by: Arnd Bergmann <arnd@arndb.de>
> Reported-by: Hulk Robot <hulkci@huawei.com>
> Cc: YueHaibing <yuehaibing@huawei.com>
> Cc: stable@vger.kernel.org

Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git mtd/fixes, thanks.

Miquel