2018-07-21 20:02:50

by Anders Roxell

[permalink] [raw]
Subject: [PATCH] drivers/memory/Kconfig: Add CONFIG_OF dependency

JZ4780_NEMC doesn't depend on OF, and if OF isn't enabled we get this
error:
drivers/memory/jz4780-nemc.c: In function ‘jz4780_nemc_num_banks’:
drivers/memory/jz4780-nemc.c:72:10: error: implicit declaration of
function ‘of_read_number’; did you mean ‘down_read_nested’?
[-Werror=implicit-function-declaration]
bank = of_read_number(prop, 1);
^~~~~~~~~~~~~~
down_read_nested

Make JZ4780_NEMC depend on OF.

Fixes: ab99e11062c1 ("memory: jz4780-nemc: Allow selection of this driver when COMPILE_TEST=y")
Reported-by: Randy Dunlap <[email protected]>
Signed-off-by: Anders Roxell <[email protected]>
---
drivers/memory/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/memory/Kconfig b/drivers/memory/Kconfig
index a642552dfdc9..63389f075f1d 100644
--- a/drivers/memory/Kconfig
+++ b/drivers/memory/Kconfig
@@ -123,7 +123,7 @@ config JZ4780_NEMC
bool "Ingenic JZ4780 SoC NEMC driver"
default y
depends on MACH_JZ4780 || COMPILE_TEST
- depends on HAS_IOMEM
+ depends on HAS_IOMEM && OF
help
This driver is for the NAND/External Memory Controller (NEMC) in
the Ingenic JZ4780. This controller is used to handle external
--
2.18.0



2018-07-21 21:54:55

by Randy Dunlap

[permalink] [raw]
Subject: Re: [PATCH] drivers/memory/Kconfig: Add CONFIG_OF dependency

On 07/21/2018 01:00 PM, Anders Roxell wrote:
> JZ4780_NEMC doesn't depend on OF, and if OF isn't enabled we get this
> error:
> drivers/memory/jz4780-nemc.c: In function ‘jz4780_nemc_num_banks’:
> drivers/memory/jz4780-nemc.c:72:10: error: implicit declaration of
> function ‘of_read_number’; did you mean ‘down_read_nested’?
> [-Werror=implicit-function-declaration]
> bank = of_read_number(prop, 1);
> ^~~~~~~~~~~~~~
> down_read_nested
>
> Make JZ4780_NEMC depend on OF.
>
> Fixes: ab99e11062c1 ("memory: jz4780-nemc: Allow selection of this driver when COMPILE_TEST=y")
> Reported-by: Randy Dunlap <[email protected]>
> Signed-off-by: Anders Roxell <[email protected]>

Acked-by: Randy Dunlap <[email protected]>

Thanks.

> ---
> drivers/memory/Kconfig | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/memory/Kconfig b/drivers/memory/Kconfig
> index a642552dfdc9..63389f075f1d 100644
> --- a/drivers/memory/Kconfig
> +++ b/drivers/memory/Kconfig
> @@ -123,7 +123,7 @@ config JZ4780_NEMC
> bool "Ingenic JZ4780 SoC NEMC driver"
> default y
> depends on MACH_JZ4780 || COMPILE_TEST
> - depends on HAS_IOMEM
> + depends on HAS_IOMEM && OF
> help
> This driver is for the NAND/External Memory Controller (NEMC) in
> the Ingenic JZ4780. This controller is used to handle external
>


--
~Randy

2018-07-22 06:31:38

by Boris Brezillon

[permalink] [raw]
Subject: Re: [PATCH] drivers/memory/Kconfig: Add CONFIG_OF dependency

+Arnd, Rob and the DT ML.

On Sat, 21 Jul 2018 14:53:47 -0700
Randy Dunlap <[email protected]> wrote:

> On 07/21/2018 01:00 PM, Anders Roxell wrote:
> > JZ4780_NEMC doesn't depend on OF, and if OF isn't enabled we get this
> > error:
> > drivers/memory/jz4780-nemc.c: In function ‘jz4780_nemc_num_banks’:
> > drivers/memory/jz4780-nemc.c:72:10: error: implicit declaration of
> > function ‘of_read_number’; did you mean ‘down_read_nested’?
> > [-Werror=implicit-function-declaration]
> > bank = of_read_number(prop, 1);
> > ^~~~~~~~~~~~~~
> > down_read_nested

Looks like of.h defines stubs so that people can compile-test without
CONFIG_OF selected. Maybe we should move of_read_number() and
of_read_ulong() out of the #ifdef CONFIG_OF section.

Alternatively, we could patch jz4780-nemc.c to not use of_read_number
and instead rely on of_read_property_u32_index() +
of_property_count_elems_of_size() + of_n_{addr,size}_cells():

--->8---
diff --git a/drivers/memory/jz4780-nemc.c b/drivers/memory/jz4780-nemc.c
index bcf06adefc96..9ad7abc6983a 100644
--- a/drivers/memory/jz4780-nemc.c
+++ b/drivers/memory/jz4780-nemc.c
@@ -63,14 +63,21 @@ struct jz4780_nemc {
*/
unsigned int jz4780_nemc_num_banks(struct device *dev)
{
- const __be32 *prop;
- unsigned int bank, count = 0;
unsigned long referenced = 0;
- int i = 0;
-
- while ((prop = of_get_address(dev->of_node, i++, NULL, NULL))) {
- bank = of_read_number(prop, 1);
- if (!(referenced & BIT(bank))) {
+ int nelems, elemsize, i = 0;
+ unsigned int count = 0;
+
+ /* #address-cells = 2 and #size-cells = 1, hence */
+ elemsize = of_n_addr_cells(dev->of_node) +
+ of_n_size_cells(dev->of_node);
+ nelems = of_property_count_elems_of_size(dev->of_node, "reg", elemsize);
+ for (i = 0; i < nelems; i++) {
+ u32 bank;
+
+ if (!of_property_read_u32_index(dev->of_node, "reg",
+ i * elemsize, &bank) &&
+ bank >= 1 && bank < JZ4780_NEMC_NUM_BANKS &&
+ !(referenced & BIT(bank))) {
referenced |= BIT(bank);
count++;
}
@@ -269,10 +276,9 @@ static int jz4780_nemc_probe(struct platform_device *pdev)
struct jz4780_nemc *nemc;
struct resource *res;
struct device_node *child;
- const __be32 *prop;
- unsigned int bank;
unsigned long referenced;
int i, ret;
+ u32 bank;

nemc = devm_kzalloc(dev, sizeof(*nemc), GFP_KERNEL);
if (!nemc)
@@ -316,10 +322,27 @@ static int jz4780_nemc_probe(struct platform_device *pdev)
* registered for it.
*/
for_each_child_of_node(nemc->dev->of_node, child) {
+ int nelems, elemsize;
+
referenced = 0;
i = 0;
- while ((prop = of_get_address(child, i++, NULL, NULL))) {
- bank = of_read_number(prop, 1);
+ elemsize = of_n_addr_cells(dev->of_node) +
+ of_n_size_cells(dev->of_node);
+ nelems = of_property_count_elems_of_size(dev->of_node, "reg",
+ elemsize);
+ for (i = 0; i < nelems; i++) {
+ u32 bank;
+
+ ret = of_property_read_u32_index(dev->of_node, "reg",
+ i * elemsize, &bank);
+ if (ret) {
+ dev_err(nemc->dev,
+ "failed to read bank %d of %pOF (err = %d)\n",
+ i, child, ret);
+ referenced = 0;
+ break;
+ }
+
if (bank < 1 || bank >= JZ4780_NEMC_NUM_BANKS) {
dev_err(nemc->dev,
"%pOF requests invalid bank %u\n",

2018-07-23 09:36:19

by Arnd Bergmann

[permalink] [raw]
Subject: Re: [PATCH] drivers/memory/Kconfig: Add CONFIG_OF dependency

On Sun, Jul 22, 2018 at 8:29 AM, Boris Brezillon
<[email protected]> wrote:
> +Arnd, Rob and the DT ML.
>
> On Sat, 21 Jul 2018 14:53:47 -0700
> Randy Dunlap <[email protected]> wrote:
>
>> On 07/21/2018 01:00 PM, Anders Roxell wrote:
>> > JZ4780_NEMC doesn't depend on OF, and if OF isn't enabled we get this
>> > error:
>> > drivers/memory/jz4780-nemc.c: In function ‘jz4780_nemc_num_banks’:
>> > drivers/memory/jz4780-nemc.c:72:10: error: implicit declaration of
>> > function ‘of_read_number’; did you mean ‘down_read_nested’?
>> > [-Werror=implicit-function-declaration]
>> > bank = of_read_number(prop, 1);
>> > ^~~~~~~~~~~~~~
>> > down_read_nested
>
> Looks like of.h defines stubs so that people can compile-test without
> CONFIG_OF selected. Maybe we should move of_read_number() and
> of_read_ulong() out of the #ifdef CONFIG_OF section.

That seems fine, though the added dependency seems appropriate
here as well. of_read_number() is rarely used, and for the most part in
powerpc specific code that is guaranteed to have CONFIG_OF enabled,
so it's not that likely to cause many more problems.

> Alternatively, we could patch jz4780-nemc.c to not use of_read_number
> and instead rely on of_read_property_u32_index() +
> of_property_count_elems_of_size() + of_n_{addr,size}_cells():

That seems noticeably longer for no good reason, I'd go with either
the header file change you suggested or Anders' patch.

Arnd

2018-07-23 09:42:18

by Boris Brezillon

[permalink] [raw]
Subject: Re: [PATCH] drivers/memory/Kconfig: Add CONFIG_OF dependency

On Mon, 23 Jul 2018 11:34:43 +0200
Arnd Bergmann <[email protected]> wrote:

> On Sun, Jul 22, 2018 at 8:29 AM, Boris Brezillon
> <[email protected]> wrote:
> > +Arnd, Rob and the DT ML.
> >
> > On Sat, 21 Jul 2018 14:53:47 -0700
> > Randy Dunlap <[email protected]> wrote:
> >
> >> On 07/21/2018 01:00 PM, Anders Roxell wrote:
> >> > JZ4780_NEMC doesn't depend on OF, and if OF isn't enabled we get this
> >> > error:
> >> > drivers/memory/jz4780-nemc.c: In function ‘jz4780_nemc_num_banks’:
> >> > drivers/memory/jz4780-nemc.c:72:10: error: implicit declaration of
> >> > function ‘of_read_number’; did you mean ‘down_read_nested’?
> >> > [-Werror=implicit-function-declaration]
> >> > bank = of_read_number(prop, 1);
> >> > ^~~~~~~~~~~~~~
> >> > down_read_nested
> >
> > Looks like of.h defines stubs so that people can compile-test without
> > CONFIG_OF selected. Maybe we should move of_read_number() and
> > of_read_ulong() out of the #ifdef CONFIG_OF section.
>
> That seems fine, though the added dependency seems appropriate
> here as well. of_read_number() is rarely used, and for the most part in
> powerpc specific code that is guaranteed to have CONFIG_OF enabled,
> so it's not that likely to cause many more problems.

Ok, then I'll let Miquel apply Anders' patch to the NAND tree.

Thanks for your feedback.

Boris

2018-07-23 15:41:41

by Arnd Bergmann

[permalink] [raw]
Subject: Re: [PATCH] drivers/memory/Kconfig: Add CONFIG_OF dependency

On Mon, Jul 23, 2018 at 11:41 AM, Boris Brezillon
<[email protected]> wrote:
> On Mon, 23 Jul 2018 11:34:43 +0200
> Arnd Bergmann <[email protected]> wrote:
>
>> On Sun, Jul 22, 2018 at 8:29 AM, Boris Brezillon
>> <[email protected]> wrote:
>> > +Arnd, Rob and the DT ML.
>> >
>> > On Sat, 21 Jul 2018 14:53:47 -0700
>> > Randy Dunlap <[email protected]> wrote:
>> >
>> >> On 07/21/2018 01:00 PM, Anders Roxell wrote:
>> >> > JZ4780_NEMC doesn't depend on OF, and if OF isn't enabled we get this
>> >> > error:
>> >> > drivers/memory/jz4780-nemc.c: In function ‘jz4780_nemc_num_banks’:
>> >> > drivers/memory/jz4780-nemc.c:72:10: error: implicit declaration of
>> >> > function ‘of_read_number’; did you mean ‘down_read_nested’?
>> >> > [-Werror=implicit-function-declaration]
>> >> > bank = of_read_number(prop, 1);
>> >> > ^~~~~~~~~~~~~~
>> >> > down_read_nested
>> >
>> > Looks like of.h defines stubs so that people can compile-test without
>> > CONFIG_OF selected. Maybe we should move of_read_number() and
>> > of_read_ulong() out of the #ifdef CONFIG_OF section.
>>
>> That seems fine, though the added dependency seems appropriate
>> here as well. of_read_number() is rarely used, and for the most part in
>> powerpc specific code that is guaranteed to have CONFIG_OF enabled,
>> so it's not that likely to cause many more problems.
>
> Ok, then I'll let Miquel apply Anders' patch to the NAND tree.
>
> Thanks for your feedback.

My randconfig build bot just ran into a second problem with this driver
with CONFIG_GPIOLIB disabled:

drivers/mtd/nand/raw/jz4740_nand.c: In function 'jz_nand_dev_ready':
drivers/mtd/nand/raw/jz4740_nand.c:133:9: error: implicit declaration
of function 'gpiod_get_value_cansleep'; did you mean
'gpio_get_value_cansleep'? [-Werror=implicit-function-declaration]
return gpiod_get_value_cansleep(nand->busy_gpio);
^~~~~~~~~~~~~~~~~~~~~~~~
gpio_get_value_cansleep
drivers/mtd/nand/raw/jz4740_nand.c: In function 'jz_nand_probe':
drivers/mtd/nand/raw/jz4740_nand.c:388:20: error: implicit declaration
of function 'devm_gpiod_get_optional'; did you mean
'devm_gpio_request_one'? [-Werror=implicit-function-declaration]
nand->busy_gpio = devm_gpiod_get_optional(&pdev->dev, "busy", GPIOD_IN);
^~~~~~~~~~~~~~~~~~~~~~~
devm_gpio_request_one
drivers/mtd/nand/raw/jz4740_nand.c:388:64: error: 'GPIOD_IN'
undeclared (first use in this function); did you mean 'GPIOF_IN'?
nand->busy_gpio = devm_gpiod_get_optional(&pdev->dev, "busy", GPIOD_IN);
^~~~~~~~
GPIOF_IN


We could add another dependency here or (my preference) include
linux/gpio/consumer.h to fix that. Do you want a separate patch for
it, or should Anders send a combined patch?

Arnd

2018-07-23 16:08:11

by Arnd Bergmann

[permalink] [raw]
Subject: Re: [PATCH] drivers/memory/Kconfig: Add CONFIG_OF dependency

On Mon, Jul 23, 2018 at 5:40 PM, Arnd Bergmann <[email protected]> wrote:
> On Mon, Jul 23, 2018 at 11:41 AM, Boris Brezillon
> <[email protected]> wrote:
>> On Mon, 23 Jul 2018 11:34:43 +0200
>> Arnd Bergmann <[email protected]> wrote:
>>
>>> On Sun, Jul 22, 2018 at 8:29 AM, Boris Brezillon
>>> <[email protected]> wrote:
>>> > +Arnd, Rob and the DT ML.
>>> >
>>> > On Sat, 21 Jul 2018 14:53:47 -0700
>>> > Randy Dunlap <[email protected]> wrote:
>>> >
>>> >> On 07/21/2018 01:00 PM, Anders Roxell wrote:
>>> >> > JZ4780_NEMC doesn't depend on OF, and if OF isn't enabled we get this
>>> >> > error:
>>> >> > drivers/memory/jz4780-nemc.c: In function ‘jz4780_nemc_num_banks’:
>>> >> > drivers/memory/jz4780-nemc.c:72:10: error: implicit declaration of
>>> >> > function ‘of_read_number’; did you mean ‘down_read_nested’?
>>> >> > [-Werror=implicit-function-declaration]
>>> >> > bank = of_read_number(prop, 1);
>>> >> > ^~~~~~~~~~~~~~
>>> >> > down_read_nested
>>> >
>>> > Looks like of.h defines stubs so that people can compile-test without
>>> > CONFIG_OF selected. Maybe we should move of_read_number() and
>>> > of_read_ulong() out of the #ifdef CONFIG_OF section.
>>>
>>> That seems fine, though the added dependency seems appropriate
>>> here as well. of_read_number() is rarely used, and for the most part in
>>> powerpc specific code that is guaranteed to have CONFIG_OF enabled,
>>> so it's not that likely to cause many more problems.
>>
>> Ok, then I'll let Miquel apply Anders' patch to the NAND tree.
>>
>> Thanks for your feedback.
>
> My randconfig build bot just ran into a second problem with this driver
> with CONFIG_GPIOLIB disabled:
>
> drivers/mtd/nand/raw/jz4740_nand.c: In function 'jz_nand_dev_ready':
> drivers/mtd/nand/raw/jz4740_nand.c:133:9: error: implicit declaration
> of function 'gpiod_get_value_cansleep'; did you mean
> 'gpio_get_value_cansleep'? [-Werror=implicit-function-declaration]
> return gpiod_get_value_cansleep(nand->busy_gpio);
> ^~~~~~~~~~~~~~~~~~~~~~~~
> gpio_get_value_cansleep
> drivers/mtd/nand/raw/jz4740_nand.c: In function 'jz_nand_probe':
> drivers/mtd/nand/raw/jz4740_nand.c:388:20: error: implicit declaration
> of function 'devm_gpiod_get_optional'; did you mean
> 'devm_gpio_request_one'? [-Werror=implicit-function-declaration]
> nand->busy_gpio = devm_gpiod_get_optional(&pdev->dev, "busy", GPIOD_IN);
> ^~~~~~~~~~~~~~~~~~~~~~~
> devm_gpio_request_one
> drivers/mtd/nand/raw/jz4740_nand.c:388:64: error: 'GPIOD_IN'
> undeclared (first use in this function); did you mean 'GPIOF_IN'?
> nand->busy_gpio = devm_gpiod_get_optional(&pdev->dev, "busy", GPIOD_IN);
> ^~~~~~~~
> GPIOF_IN
>
>
> We could add another dependency here or (my preference) include
> linux/gpio/consumer.h to fix that. Do you want a separate patch for
> it, or should Anders send a combined patch?

One more failure, not analyzed yet:

/git/arm-soc/drivers/mtd/nand/raw/jz4740_nand.c: In function
'jz_nand_select_chip':
/git/arm-soc/drivers/mtd/nand/raw/jz4740_nand.c:87:9: error: implicit
declaration of function 'readl'; did you mean 'krealloc'?
[-Werror=implicit-function-declaration]
ctrl = readl(nand->base + JZ_REG_NAND_CTRL);
^~~~~

Arnd

2018-07-23 16:14:57

by Boris Brezillon

[permalink] [raw]
Subject: Re: [PATCH] drivers/memory/Kconfig: Add CONFIG_OF dependency

On Mon, 23 Jul 2018 17:40:29 +0200
Arnd Bergmann <[email protected]> wrote:

> On Mon, Jul 23, 2018 at 11:41 AM, Boris Brezillon
> <[email protected]> wrote:
> > On Mon, 23 Jul 2018 11:34:43 +0200
> > Arnd Bergmann <[email protected]> wrote:
> >
> >> On Sun, Jul 22, 2018 at 8:29 AM, Boris Brezillon
> >> <[email protected]> wrote:
> >> > +Arnd, Rob and the DT ML.
> >> >
> >> > On Sat, 21 Jul 2018 14:53:47 -0700
> >> > Randy Dunlap <[email protected]> wrote:
> >> >
> >> >> On 07/21/2018 01:00 PM, Anders Roxell wrote:
> >> >> > JZ4780_NEMC doesn't depend on OF, and if OF isn't enabled we get this
> >> >> > error:
> >> >> > drivers/memory/jz4780-nemc.c: In function ‘jz4780_nemc_num_banks’:
> >> >> > drivers/memory/jz4780-nemc.c:72:10: error: implicit declaration of
> >> >> > function ‘of_read_number’; did you mean ‘down_read_nested’?
> >> >> > [-Werror=implicit-function-declaration]
> >> >> > bank = of_read_number(prop, 1);
> >> >> > ^~~~~~~~~~~~~~
> >> >> > down_read_nested
> >> >
> >> > Looks like of.h defines stubs so that people can compile-test without
> >> > CONFIG_OF selected. Maybe we should move of_read_number() and
> >> > of_read_ulong() out of the #ifdef CONFIG_OF section.
> >>
> >> That seems fine, though the added dependency seems appropriate
> >> here as well. of_read_number() is rarely used, and for the most part in
> >> powerpc specific code that is guaranteed to have CONFIG_OF enabled,
> >> so it's not that likely to cause many more problems.
> >
> > Ok, then I'll let Miquel apply Anders' patch to the NAND tree.
> >
> > Thanks for your feedback.
>
> My randconfig build bot just ran into a second problem with this driver
> with CONFIG_GPIOLIB disabled:
>
> drivers/mtd/nand/raw/jz4740_nand.c: In function 'jz_nand_dev_ready':
> drivers/mtd/nand/raw/jz4740_nand.c:133:9: error: implicit declaration
> of function 'gpiod_get_value_cansleep'; did you mean
> 'gpio_get_value_cansleep'? [-Werror=implicit-function-declaration]
> return gpiod_get_value_cansleep(nand->busy_gpio);
> ^~~~~~~~~~~~~~~~~~~~~~~~
> gpio_get_value_cansleep
> drivers/mtd/nand/raw/jz4740_nand.c: In function 'jz_nand_probe':
> drivers/mtd/nand/raw/jz4740_nand.c:388:20: error: implicit declaration
> of function 'devm_gpiod_get_optional'; did you mean
> 'devm_gpio_request_one'? [-Werror=implicit-function-declaration]
> nand->busy_gpio = devm_gpiod_get_optional(&pdev->dev, "busy", GPIOD_IN);
> ^~~~~~~~~~~~~~~~~~~~~~~
> devm_gpio_request_one
> drivers/mtd/nand/raw/jz4740_nand.c:388:64: error: 'GPIOD_IN'
> undeclared (first use in this function); did you mean 'GPIOF_IN'?
> nand->busy_gpio = devm_gpiod_get_optional(&pdev->dev, "busy", GPIOD_IN);
> ^~~~~~~~
> GPIOF_IN
>
>
> We could add another dependency here or (my preference) include
> linux/gpio/consumer.h to fix that. Do you want a separate patch for
> it, or should Anders send a combined patch?

I already fixed that one last week [1], it's been applied yet.

Thanks,

Boris

[1]http://patchwork.ozlabs.org/patch/946614/

2018-07-23 16:15:32

by Boris Brezillon

[permalink] [raw]
Subject: Re: [PATCH] drivers/memory/Kconfig: Add CONFIG_OF dependency

On Mon, 23 Jul 2018 18:04:52 +0200
Arnd Bergmann <[email protected]> wrote:

> On Mon, Jul 23, 2018 at 5:40 PM, Arnd Bergmann <[email protected]> wrote:
> > On Mon, Jul 23, 2018 at 11:41 AM, Boris Brezillon
> > <[email protected]> wrote:
> >> On Mon, 23 Jul 2018 11:34:43 +0200
> >> Arnd Bergmann <[email protected]> wrote:
> >>
> >>> On Sun, Jul 22, 2018 at 8:29 AM, Boris Brezillon
> >>> <[email protected]> wrote:
> >>> > +Arnd, Rob and the DT ML.
> >>> >
> >>> > On Sat, 21 Jul 2018 14:53:47 -0700
> >>> > Randy Dunlap <[email protected]> wrote:
> >>> >
> >>> >> On 07/21/2018 01:00 PM, Anders Roxell wrote:
> >>> >> > JZ4780_NEMC doesn't depend on OF, and if OF isn't enabled we get this
> >>> >> > error:
> >>> >> > drivers/memory/jz4780-nemc.c: In function ‘jz4780_nemc_num_banks’:
> >>> >> > drivers/memory/jz4780-nemc.c:72:10: error: implicit declaration of
> >>> >> > function ‘of_read_number’; did you mean ‘down_read_nested’?
> >>> >> > [-Werror=implicit-function-declaration]
> >>> >> > bank = of_read_number(prop, 1);
> >>> >> > ^~~~~~~~~~~~~~
> >>> >> > down_read_nested
> >>> >
> >>> > Looks like of.h defines stubs so that people can compile-test without
> >>> > CONFIG_OF selected. Maybe we should move of_read_number() and
> >>> > of_read_ulong() out of the #ifdef CONFIG_OF section.
> >>>
> >>> That seems fine, though the added dependency seems appropriate
> >>> here as well. of_read_number() is rarely used, and for the most part in
> >>> powerpc specific code that is guaranteed to have CONFIG_OF enabled,
> >>> so it's not that likely to cause many more problems.
> >>
> >> Ok, then I'll let Miquel apply Anders' patch to the NAND tree.
> >>
> >> Thanks for your feedback.
> >
> > My randconfig build bot just ran into a second problem with this driver
> > with CONFIG_GPIOLIB disabled:
> >
> > drivers/mtd/nand/raw/jz4740_nand.c: In function 'jz_nand_dev_ready':
> > drivers/mtd/nand/raw/jz4740_nand.c:133:9: error: implicit declaration
> > of function 'gpiod_get_value_cansleep'; did you mean
> > 'gpio_get_value_cansleep'? [-Werror=implicit-function-declaration]
> > return gpiod_get_value_cansleep(nand->busy_gpio);
> > ^~~~~~~~~~~~~~~~~~~~~~~~
> > gpio_get_value_cansleep
> > drivers/mtd/nand/raw/jz4740_nand.c: In function 'jz_nand_probe':
> > drivers/mtd/nand/raw/jz4740_nand.c:388:20: error: implicit declaration
> > of function 'devm_gpiod_get_optional'; did you mean
> > 'devm_gpio_request_one'? [-Werror=implicit-function-declaration]
> > nand->busy_gpio = devm_gpiod_get_optional(&pdev->dev, "busy", GPIOD_IN);
> > ^~~~~~~~~~~~~~~~~~~~~~~
> > devm_gpio_request_one
> > drivers/mtd/nand/raw/jz4740_nand.c:388:64: error: 'GPIOD_IN'
> > undeclared (first use in this function); did you mean 'GPIOF_IN'?
> > nand->busy_gpio = devm_gpiod_get_optional(&pdev->dev, "busy", GPIOD_IN);
> > ^~~~~~~~
> > GPIOF_IN
> >
> >
> > We could add another dependency here or (my preference) include
> > linux/gpio/consumer.h to fix that. Do you want a separate patch for
> > it, or should Anders send a combined patch?
>
> One more failure, not analyzed yet:
>
> /git/arm-soc/drivers/mtd/nand/raw/jz4740_nand.c: In function
> 'jz_nand_select_chip':
> /git/arm-soc/drivers/mtd/nand/raw/jz4740_nand.c:87:9: error: implicit
> declaration of function 'readl'; did you mean 'krealloc'?
> [-Werror=implicit-function-declaration]
> ctrl = readl(nand->base + JZ_REG_NAND_CTRL);
> ^~~~~

Yep, somehow io.h was indirectly included by gpio.h. I fixed that in my
patch when replacing gpio.h by gpio/consumer.h by including linux/io.h.

2018-07-23 18:41:32

by Arnd Bergmann

[permalink] [raw]
Subject: Re: [PATCH] drivers/memory/Kconfig: Add CONFIG_OF dependency

On Mon, Jul 23, 2018 at 6:14 PM, Boris Brezillon
<[email protected]> wrote:
> On Mon, 23 Jul 2018 18:04:52 +0200
> Arnd Bergmann <[email protected]> wrote:
>
>> On Mon, Jul 23, 2018 at 5:40 PM, Arnd Bergmann <[email protected]> wrote:
>> > On Mon, Jul 23, 2018 at 11:41 AM, Boris Brezillon
>> > <[email protected]> wrote:
>> >> On Mon, 23 Jul 2018 11:34:43 +0200
>> >> Arnd Bergmann <[email protected]> wrote:
>> >>
>> >>> On Sun, Jul 22, 2018 at 8:29 AM, Boris Brezillon
>> >>> <[email protected]> wrote:
>> >>> > +Arnd, Rob and the DT ML.

> Yep, somehow io.h was indirectly included by gpio.h. I fixed that in my
> patch when replacing gpio.h by gpio/consumer.h by including linux/io.h.

Ok, looks good. With the patch from you plus the one from Anders,
I don't see any more randconfig failures in this driver.

Arnd

2018-07-26 23:27:57

by Miquel Raynal

[permalink] [raw]
Subject: Re: [PATCH] drivers/memory/Kconfig: Add CONFIG_OF dependency

Hi Boris,

Boris Brezillon <[email protected]> wrote on Mon, 23 Jul 2018
11:41:07 +0200:

> On Mon, 23 Jul 2018 11:34:43 +0200
> Arnd Bergmann <[email protected]> wrote:
>
> > On Sun, Jul 22, 2018 at 8:29 AM, Boris Brezillon
> > <[email protected]> wrote:
> > > +Arnd, Rob and the DT ML.
> > >
> > > On Sat, 21 Jul 2018 14:53:47 -0700
> > > Randy Dunlap <[email protected]> wrote:
> > >
> > >> On 07/21/2018 01:00 PM, Anders Roxell wrote:
> > >> > JZ4780_NEMC doesn't depend on OF, and if OF isn't enabled we get this
> > >> > error:
> > >> > drivers/memory/jz4780-nemc.c: In function ‘jz4780_nemc_num_banks’:
> > >> > drivers/memory/jz4780-nemc.c:72:10: error: implicit declaration of
> > >> > function ‘of_read_number’; did you mean ‘down_read_nested’?
> > >> > [-Werror=implicit-function-declaration]
> > >> > bank = of_read_number(prop, 1);
> > >> > ^~~~~~~~~~~~~~
> > >> > down_read_nested
> > >
> > > Looks like of.h defines stubs so that people can compile-test without
> > > CONFIG_OF selected. Maybe we should move of_read_number() and
> > > of_read_ulong() out of the #ifdef CONFIG_OF section.
> >
> > That seems fine, though the added dependency seems appropriate
> > here as well. of_read_number() is rarely used, and for the most part in
> > powerpc specific code that is guaranteed to have CONFIG_OF enabled,
> > so it's not that likely to cause many more problems.
>
> Ok, then I'll let Miquel apply Anders' patch to the NAND tree.

Applied to nand/next, thanks.

Miquèl