2022-11-22 15:09:19

by Jean Delvare

[permalink] [raw]
Subject: [PATCH] mfd: Drop obsolete dependencies on COMPILE_TEST

Since commit 0166dc11be91 ("of: make CONFIG_OF user selectable"), it
is possible to test-build any driver which depends on OF on any
architecture by explicitly selecting OF. Therefore depending on
COMPILE_TEST as an alternative is no longer needed.

It is actually better to always build such drivers with OF enabled,
so that the test builds are closer to how each driver will actually be
built on its intended target. Building them without OF may not test
much as the compiler will optimize out potentially large parts of the
code. In the worst case, this could even pop false positive warnings.
Dropping COMPILE_TEST here improves the quality of our testing and
avoids wasting time on non-existent issues.

As a minor optimization, this also lets us drop of_match_ptr(), as we
now know what it will resolve to, we might as well save cpp some work.

Signed-off-by: Jean Delvare <[email protected]>
Cc: Lee Jones <[email protected]>
Cc: Bartosz Golaszewski <[email protected]>
Cc: Chanwoo Choi <[email protected]>
Cc: Krzysztof Kozlowski <[email protected]>
Cc: Bartlomiej Zolnierkiewicz <[email protected]>
Cc: Luca Ceresoli <[email protected]>
Cc: "Jonathan Neuschäfer" <[email protected]>
---
drivers/mfd/Kconfig | 16 ++++++++--------
drivers/mfd/motorola-cpcap.c | 2 +-
2 files changed, 9 insertions(+), 9 deletions(-)

--- linux-6.0.orig/drivers/mfd/Kconfig
+++ linux-6.0/drivers/mfd/Kconfig
@@ -794,7 +794,7 @@ config MFD_MAX14577
config MFD_MAX77620
bool "Maxim Semiconductor MAX77620 and MAX20024 PMIC Support"
depends on I2C=y
- depends on OF || COMPILE_TEST
+ depends on OF
select MFD_CORE
select REGMAP_I2C
select REGMAP_IRQ
@@ -809,7 +809,7 @@ config MFD_MAX77620
config MFD_MAX77650
tristate "Maxim MAX77650/77651 PMIC Support"
depends on I2C
- depends on OF || COMPILE_TEST
+ depends on OF
select MFD_CORE
select REGMAP_I2C
select REGMAP_IRQ
@@ -824,7 +824,7 @@ config MFD_MAX77650
config MFD_MAX77686
tristate "Maxim Semiconductor MAX77686/802 PMIC Support"
depends on I2C
- depends on OF || COMPILE_TEST
+ depends on OF
select MFD_CORE
select REGMAP_I2C
select REGMAP_IRQ
@@ -853,7 +853,7 @@ config MFD_MAX77693
config MFD_MAX77714
tristate "Maxim Semiconductor MAX77714 PMIC Support"
depends on I2C
- depends on OF || COMPILE_TEST
+ depends on OF
select MFD_CORE
select REGMAP_I2C
help
@@ -973,7 +973,7 @@ config EZX_PCAP
config MFD_CPCAP
tristate "Support for Motorola CPCAP"
depends on SPI
- depends on OF || COMPILE_TEST
+ depends on OF
select MFD_CORE
select REGMAP_SPI
select REGMAP_IRQ
@@ -998,7 +998,7 @@ config MFD_VIPERBOARD

config MFD_NTXEC
tristate "Netronix embedded controller (EC)"
- depends on OF || COMPILE_TEST
+ depends on OF
depends on I2C
select REGMAP_I2C
select MFD_CORE
@@ -1172,7 +1172,7 @@ config MFD_RN5T618
config MFD_SEC_CORE
tristate "Samsung Electronics PMIC Series Support"
depends on I2C=y
- depends on OF || COMPILE_TEST
+ depends on OF
select MFD_CORE
select REGMAP_I2C
select REGMAP_IRQ
@@ -2018,7 +2018,7 @@ config MFD_STPMIC1
config MFD_STMFX
tristate "Support for STMicroelectronics Multi-Function eXpander (STMFX)"
depends on I2C
- depends on OF || COMPILE_TEST
+ depends on OF
select MFD_CORE
select REGMAP_I2C
help
--- linux-6.0.orig/drivers/mfd/motorola-cpcap.c
+++ linux-6.0/drivers/mfd/motorola-cpcap.c
@@ -296,7 +296,7 @@ static int cpcap_probe(struct spi_device
struct cpcap_ddata *cpcap;
int ret;

- match = of_match_device(of_match_ptr(cpcap_of_match), &spi->dev);
+ match = of_match_device(cpcap_of_match, &spi->dev);
if (!match)
return -ENODEV;


--
Jean Delvare
SUSE L3 Support


2022-12-08 13:42:12

by Lee Jones

[permalink] [raw]
Subject: Re: [PATCH] mfd: Drop obsolete dependencies on COMPILE_TEST

On Tue, 22 Nov 2022, Jean Delvare wrote:

> Since commit 0166dc11be91 ("of: make CONFIG_OF user selectable"), it
> is possible to test-build any driver which depends on OF on any
> architecture by explicitly selecting OF. Therefore depending on
> COMPILE_TEST as an alternative is no longer needed.
>
> It is actually better to always build such drivers with OF enabled,
> so that the test builds are closer to how each driver will actually be
> built on its intended target. Building them without OF may not test
> much as the compiler will optimize out potentially large parts of the
> code. In the worst case, this could even pop false positive warnings.
> Dropping COMPILE_TEST here improves the quality of our testing and
> avoids wasting time on non-existent issues.
>
> As a minor optimization, this also lets us drop of_match_ptr(), as we
> now know what it will resolve to, we might as well save cpp some work.
>
> Signed-off-by: Jean Delvare <[email protected]>
> Cc: Lee Jones <[email protected]>
> Cc: Bartosz Golaszewski <[email protected]>
> Cc: Chanwoo Choi <[email protected]>
> Cc: Krzysztof Kozlowski <[email protected]>
> Cc: Bartlomiej Zolnierkiewicz <[email protected]>
> Cc: Luca Ceresoli <[email protected]>
> Cc: "Jonathan Neuschäfer" <[email protected]>
> ---
> drivers/mfd/Kconfig | 16 ++++++++--------
> drivers/mfd/motorola-cpcap.c | 2 +-
> 2 files changed, 9 insertions(+), 9 deletions(-)

Applied, thanks.

--
Lee Jones [李琼斯]