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SubjectRe: [PATCH v2] iio: expose shared parameter in IIO_ENUM_AVAILABLE
On Fri, 19 Nov 2021 12:46:58 +0200
Alexandru Ardelean <ardeleanalex@gmail.com> wrote:

> On Fri, Nov 19, 2021 at 11:37 AM Antoniu Miclaus
> <antoniu.miclaus@analog.com> wrote:
> >
> > The shared parameter should be configurable based on its usage, and not
> > constrained to IIO_SHARED_BY_TYPE.
> >
> > This patch aims to improve the flexibility in using the
> > IIO_ENUM_AVAILABLE define and avoid redefining custom iio enums that
> > expose the shared parameter.
> >
> > An example is the ad5766.c driver where IIO_ENUM_AVAILABLE_SHARED was
> > defined in order to achieve `shared` parameter customization.
> >
> > The current state of the IIO_ENUM_AVAILABLE implementation will imply
> > similar redefinitions each time a driver will require access to the
> > `shared` parameter. An example would be admv1013 driver which will
> > require custom device attribute for the frequency translation modes:
> > Quadrature I/Q mode and Intermediate Frequency mode.
> >
>
> This time, I also got a chance to look at this :)
>
> Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com>

Applied, thanks

>
> > Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
> > ---
> > changes in v2:
> > - wrap line to 80 chars
> > - fix wrong macro update
> > drivers/iio/accel/bma180.c | 2 +-
> > drivers/iio/accel/mma9553.c | 2 +-
> > drivers/iio/adc/ad7192.c | 3 ++-
> > drivers/iio/adc/hi8435.c | 2 +-
> > drivers/iio/dac/ad5064.c | 4 ++--
> > drivers/iio/dac/ad5380.c | 2 +-
> > drivers/iio/dac/ad5446.c | 2 +-
> > drivers/iio/dac/ad5504.c | 2 +-
> > drivers/iio/dac/ad5624r_spi.c | 2 +-
> > drivers/iio/dac/ad5686.c | 2 +-
> > drivers/iio/dac/ad5766.c | 13 ++-----------
> > drivers/iio/dac/ad5791.c | 2 +-
> > drivers/iio/dac/max5821.c | 2 +-
> > drivers/iio/dac/mcp4725.c | 8 ++++----
> > drivers/iio/dac/stm32-dac.c | 2 +-
> > drivers/iio/dac/ti-dac082s085.c | 2 +-
> > drivers/iio/dac/ti-dac5571.c | 2 +-
> > drivers/iio/dac/ti-dac7311.c | 2 +-
> > drivers/iio/magnetometer/hmc5843_core.c | 4 ++--
> > drivers/iio/trigger/stm32-timer-trigger.c | 4 ++--
> > include/linux/iio/iio.h | 5 +++--
> > 21 files changed, 31 insertions(+), 38 deletions(-)
> >
> > diff --git a/drivers/iio/accel/bma180.c b/drivers/iio/accel/bma180.c
> > index 2edfcb4819b7..09496f358ad9 100644
> > --- a/drivers/iio/accel/bma180.c
> > +++ b/drivers/iio/accel/bma180.c
> > @@ -658,7 +658,7 @@ static const struct iio_chan_spec_ext_info bma023_ext_info[] = {
> >
> > static const struct iio_chan_spec_ext_info bma180_ext_info[] = {
> > IIO_ENUM("power_mode", IIO_SHARED_BY_TYPE, &bma180_power_mode_enum),
> > - IIO_ENUM_AVAILABLE("power_mode", &bma180_power_mode_enum),
> > + IIO_ENUM_AVAILABLE("power_mode", IIO_SHARED_BY_TYPE, &bma180_power_mode_enum),
> > IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, bma180_accel_get_mount_matrix),
> > { }
> > };
> > diff --git a/drivers/iio/accel/mma9553.c b/drivers/iio/accel/mma9553.c
> > index ba3ecb3b57dc..0570ab1cc064 100644
> > --- a/drivers/iio/accel/mma9553.c
> > +++ b/drivers/iio/accel/mma9553.c
> > @@ -917,7 +917,7 @@ static const struct iio_enum mma9553_calibgender_enum = {
> >
> > static const struct iio_chan_spec_ext_info mma9553_ext_info[] = {
> > IIO_ENUM("calibgender", IIO_SHARED_BY_TYPE, &mma9553_calibgender_enum),
> > - IIO_ENUM_AVAILABLE("calibgender", &mma9553_calibgender_enum),
> > + IIO_ENUM_AVAILABLE("calibgender", IIO_SHARED_BY_TYPE, &mma9553_calibgender_enum),
> > {},
> > };
> >
> > diff --git a/drivers/iio/adc/ad7192.c b/drivers/iio/adc/ad7192.c
> > index 2121a812b0c3..cc990205f306 100644
> > --- a/drivers/iio/adc/ad7192.c
> > +++ b/drivers/iio/adc/ad7192.c
> > @@ -257,7 +257,8 @@ static const struct iio_chan_spec_ext_info ad7192_calibsys_ext_info[] = {
> > },
> > IIO_ENUM("sys_calibration_mode", IIO_SEPARATE,
> > &ad7192_syscalib_mode_enum),
> > - IIO_ENUM_AVAILABLE("sys_calibration_mode", &ad7192_syscalib_mode_enum),
> > + IIO_ENUM_AVAILABLE("sys_calibration_mode", IIO_SHARED_BY_TYPE,
> > + &ad7192_syscalib_mode_enum),
> > {}
> > };
> >
> > diff --git a/drivers/iio/adc/hi8435.c b/drivers/iio/adc/hi8435.c
> > index 8b353e26668e..e665e14c6e54 100644
> > --- a/drivers/iio/adc/hi8435.c
> > +++ b/drivers/iio/adc/hi8435.c
> > @@ -350,7 +350,7 @@ static const struct iio_enum hi8435_sensing_mode = {
> >
> > static const struct iio_chan_spec_ext_info hi8435_ext_info[] = {
> > IIO_ENUM("sensing_mode", IIO_SEPARATE, &hi8435_sensing_mode),
> > - IIO_ENUM_AVAILABLE("sensing_mode", &hi8435_sensing_mode),
> > + IIO_ENUM_AVAILABLE("sensing_mode", IIO_SHARED_BY_TYPE, &hi8435_sensing_mode),
> > {},
> > };
> >
> > diff --git a/drivers/iio/dac/ad5064.c b/drivers/iio/dac/ad5064.c
> > index fd9cac4f6321..27ee2c63c5d4 100644
> > --- a/drivers/iio/dac/ad5064.c
> > +++ b/drivers/iio/dac/ad5064.c
> > @@ -377,7 +377,7 @@ static const struct iio_chan_spec_ext_info ad5064_ext_info[] = {
> > .shared = IIO_SEPARATE,
> > },
> > IIO_ENUM("powerdown_mode", IIO_SEPARATE, &ad5064_powerdown_mode_enum),
> > - IIO_ENUM_AVAILABLE("powerdown_mode", &ad5064_powerdown_mode_enum),
> > + IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ad5064_powerdown_mode_enum),
> > { },
> > };
> >
> > @@ -389,7 +389,7 @@ static const struct iio_chan_spec_ext_info ltc2617_ext_info[] = {
> > .shared = IIO_SEPARATE,
> > },
> > IIO_ENUM("powerdown_mode", IIO_SEPARATE, &ltc2617_powerdown_mode_enum),
> > - IIO_ENUM_AVAILABLE("powerdown_mode", &ltc2617_powerdown_mode_enum),
> > + IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ltc2617_powerdown_mode_enum),
> > { },
> > };
> >
> > diff --git a/drivers/iio/dac/ad5380.c b/drivers/iio/dac/ad5380.c
> > index 8ca26bb4b62f..e38860a6a9f3 100644
> > --- a/drivers/iio/dac/ad5380.c
> > +++ b/drivers/iio/dac/ad5380.c
> > @@ -249,7 +249,7 @@ static const struct iio_chan_spec_ext_info ad5380_ext_info[] = {
> > },
> > IIO_ENUM("powerdown_mode", IIO_SHARED_BY_TYPE,
> > &ad5380_powerdown_mode_enum),
> > - IIO_ENUM_AVAILABLE("powerdown_mode", &ad5380_powerdown_mode_enum),
> > + IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ad5380_powerdown_mode_enum),
> > { },
> > };
> >
> > diff --git a/drivers/iio/dac/ad5446.c b/drivers/iio/dac/ad5446.c
> > index 3cc5513a6cbf..1c9b54c012a7 100644
> > --- a/drivers/iio/dac/ad5446.c
> > +++ b/drivers/iio/dac/ad5446.c
> > @@ -142,7 +142,7 @@ static const struct iio_chan_spec_ext_info ad5446_ext_info_powerdown[] = {
> > .shared = IIO_SEPARATE,
> > },
> > IIO_ENUM("powerdown_mode", IIO_SEPARATE, &ad5446_powerdown_mode_enum),
> > - IIO_ENUM_AVAILABLE("powerdown_mode", &ad5446_powerdown_mode_enum),
> > + IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ad5446_powerdown_mode_enum),
> > { },
> > };
> >
> > diff --git a/drivers/iio/dac/ad5504.c b/drivers/iio/dac/ad5504.c
> > index 19cdf9890d02..b631261efa97 100644
> > --- a/drivers/iio/dac/ad5504.c
> > +++ b/drivers/iio/dac/ad5504.c
> > @@ -241,7 +241,7 @@ static const struct iio_chan_spec_ext_info ad5504_ext_info[] = {
> > },
> > IIO_ENUM("powerdown_mode", IIO_SHARED_BY_TYPE,
> > &ad5504_powerdown_mode_enum),
> > - IIO_ENUM_AVAILABLE("powerdown_mode", &ad5504_powerdown_mode_enum),
> > + IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ad5504_powerdown_mode_enum),
> > { },
> > };
> >
> > diff --git a/drivers/iio/dac/ad5624r_spi.c b/drivers/iio/dac/ad5624r_spi.c
> > index 530529feebb5..3c98941b9f99 100644
> > --- a/drivers/iio/dac/ad5624r_spi.c
> > +++ b/drivers/iio/dac/ad5624r_spi.c
> > @@ -159,7 +159,7 @@ static const struct iio_chan_spec_ext_info ad5624r_ext_info[] = {
> > },
> > IIO_ENUM("powerdown_mode", IIO_SHARED_BY_TYPE,
> > &ad5624r_powerdown_mode_enum),
> > - IIO_ENUM_AVAILABLE("powerdown_mode", &ad5624r_powerdown_mode_enum),
> > + IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ad5624r_powerdown_mode_enum),
> > { },
> > };
> >
> > diff --git a/drivers/iio/dac/ad5686.c b/drivers/iio/dac/ad5686.c
> > index 8f001db775f4..e592a995f404 100644
> > --- a/drivers/iio/dac/ad5686.c
> > +++ b/drivers/iio/dac/ad5686.c
> > @@ -184,7 +184,7 @@ static const struct iio_chan_spec_ext_info ad5686_ext_info[] = {
> > .shared = IIO_SEPARATE,
> > },
> > IIO_ENUM("powerdown_mode", IIO_SEPARATE, &ad5686_powerdown_mode_enum),
> > - IIO_ENUM_AVAILABLE("powerdown_mode", &ad5686_powerdown_mode_enum),
> > + IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ad5686_powerdown_mode_enum),
> > { },
> > };
> >
> > diff --git a/drivers/iio/dac/ad5766.c b/drivers/iio/dac/ad5766.c
> > index b0d220c3a126..43189af2fb1f 100644
> > --- a/drivers/iio/dac/ad5766.c
> > +++ b/drivers/iio/dac/ad5766.c
> > @@ -426,14 +426,6 @@ static ssize_t ad5766_write_ext(struct iio_dev *indio_dev,
> > .shared = _shared, \
> > }
> >
> > -#define IIO_ENUM_AVAILABLE_SHARED(_name, _shared, _e) \
> > -{ \
> > - .name = (_name "_available"), \
> > - .shared = _shared, \
> > - .read = iio_enum_available_read, \
> > - .private = (uintptr_t)(_e), \
> > -}
> > -
> > static const struct iio_chan_spec_ext_info ad5766_ext_info[] = {
> >
> > _AD5766_CHAN_EXT_INFO("dither_enable", AD5766_DITHER_ENABLE,
> > @@ -443,9 +435,8 @@ static const struct iio_chan_spec_ext_info ad5766_ext_info[] = {
> > _AD5766_CHAN_EXT_INFO("dither_source", AD5766_DITHER_SOURCE,
> > IIO_SEPARATE),
> > IIO_ENUM("dither_scale", IIO_SEPARATE, &ad5766_dither_scale_enum),
> > - IIO_ENUM_AVAILABLE_SHARED("dither_scale",
> > - IIO_SEPARATE,
> > - &ad5766_dither_scale_enum),
> > + IIO_ENUM_AVAILABLE("dither_scale", IIO_SEPARATE,
> > + &ad5766_dither_scale_enum),
> > {}
> > };
> >
> > diff --git a/drivers/iio/dac/ad5791.c b/drivers/iio/dac/ad5791.c
> > index a0923b76e8b6..7b4579d73d18 100644
> > --- a/drivers/iio/dac/ad5791.c
> > +++ b/drivers/iio/dac/ad5791.c
> > @@ -285,7 +285,7 @@ static const struct iio_chan_spec_ext_info ad5791_ext_info[] = {
> > },
> > IIO_ENUM("powerdown_mode", IIO_SHARED_BY_TYPE,
> > &ad5791_powerdown_mode_enum),
> > - IIO_ENUM_AVAILABLE("powerdown_mode", &ad5791_powerdown_mode_enum),
> > + IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ad5791_powerdown_mode_enum),
> > { },
> > };
> >
> > diff --git a/drivers/iio/dac/max5821.c b/drivers/iio/dac/max5821.c
> > index 7da4710a6408..fce640b7f1c8 100644
> > --- a/drivers/iio/dac/max5821.c
> > +++ b/drivers/iio/dac/max5821.c
> > @@ -137,7 +137,7 @@ static const struct iio_chan_spec_ext_info max5821_ext_info[] = {
> > .shared = IIO_SEPARATE,
> > },
> > IIO_ENUM("powerdown_mode", IIO_SEPARATE, &max5821_powerdown_mode_enum),
> > - IIO_ENUM_AVAILABLE("powerdown_mode", &max5821_powerdown_mode_enum),
> > + IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &max5821_powerdown_mode_enum),
> > { },
> > };
> >
> > diff --git a/drivers/iio/dac/mcp4725.c b/drivers/iio/dac/mcp4725.c
> > index 34b14aafb630..98b2c2f10bf3 100644
> > --- a/drivers/iio/dac/mcp4725.c
> > +++ b/drivers/iio/dac/mcp4725.c
> > @@ -221,8 +221,8 @@ static const struct iio_chan_spec_ext_info mcp4725_ext_info[] = {
> > },
> > IIO_ENUM("powerdown_mode", IIO_SEPARATE,
> > &mcp472x_powerdown_mode_enum[MCP4725]),
> > - IIO_ENUM_AVAILABLE("powerdown_mode",
> > - &mcp472x_powerdown_mode_enum[MCP4725]),
> > + IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE,
> > + &mcp472x_powerdown_mode_enum[MCP4725]),
> > { },
> > };
> >
> > @@ -235,8 +235,8 @@ static const struct iio_chan_spec_ext_info mcp4726_ext_info[] = {
> > },
> > IIO_ENUM("powerdown_mode", IIO_SEPARATE,
> > &mcp472x_powerdown_mode_enum[MCP4726]),
> > - IIO_ENUM_AVAILABLE("powerdown_mode",
> > - &mcp472x_powerdown_mode_enum[MCP4726]),
> > + IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE,
> > + &mcp472x_powerdown_mode_enum[MCP4726]),
> > { },
> > };
> >
> > diff --git a/drivers/iio/dac/stm32-dac.c b/drivers/iio/dac/stm32-dac.c
> > index dd2e306824e7..cd71cc4553a7 100644
> > --- a/drivers/iio/dac/stm32-dac.c
> > +++ b/drivers/iio/dac/stm32-dac.c
> > @@ -246,7 +246,7 @@ static const struct iio_chan_spec_ext_info stm32_dac_ext_info[] = {
> > .shared = IIO_SEPARATE,
> > },
> > IIO_ENUM("powerdown_mode", IIO_SEPARATE, &stm32_dac_powerdown_mode_en),
> > - IIO_ENUM_AVAILABLE("powerdown_mode", &stm32_dac_powerdown_mode_en),
> > + IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &stm32_dac_powerdown_mode_en),
> > {},
> > };
> >
> > diff --git a/drivers/iio/dac/ti-dac082s085.c b/drivers/iio/dac/ti-dac082s085.c
> > index 5c14bfb16521..6beda2193683 100644
> > --- a/drivers/iio/dac/ti-dac082s085.c
> > +++ b/drivers/iio/dac/ti-dac082s085.c
> > @@ -160,7 +160,7 @@ static const struct iio_chan_spec_ext_info ti_dac_ext_info[] = {
> > .shared = IIO_SHARED_BY_TYPE,
> > },
> > IIO_ENUM("powerdown_mode", IIO_SHARED_BY_TYPE, &ti_dac_powerdown_mode),
> > - IIO_ENUM_AVAILABLE("powerdown_mode", &ti_dac_powerdown_mode),
> > + IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ti_dac_powerdown_mode),
> > { },
> > };
> >
> > diff --git a/drivers/iio/dac/ti-dac5571.c b/drivers/iio/dac/ti-dac5571.c
> > index 546a4cf6c5ef..4a3b8d875518 100644
> > --- a/drivers/iio/dac/ti-dac5571.c
> > +++ b/drivers/iio/dac/ti-dac5571.c
> > @@ -212,7 +212,7 @@ static const struct iio_chan_spec_ext_info dac5571_ext_info[] = {
> > .shared = IIO_SEPARATE,
> > },
> > IIO_ENUM("powerdown_mode", IIO_SEPARATE, &dac5571_powerdown_mode),
> > - IIO_ENUM_AVAILABLE("powerdown_mode", &dac5571_powerdown_mode),
> > + IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &dac5571_powerdown_mode),
> > {},
> > };
> >
> > diff --git a/drivers/iio/dac/ti-dac7311.c b/drivers/iio/dac/ti-dac7311.c
> > index 09218c3029f0..99f275829ec2 100644
> > --- a/drivers/iio/dac/ti-dac7311.c
> > +++ b/drivers/iio/dac/ti-dac7311.c
> > @@ -146,7 +146,7 @@ static const struct iio_chan_spec_ext_info ti_dac_ext_info[] = {
> > .shared = IIO_SHARED_BY_TYPE,
> > },
> > IIO_ENUM("powerdown_mode", IIO_SHARED_BY_TYPE, &ti_dac_powerdown_mode),
> > - IIO_ENUM_AVAILABLE("powerdown_mode", &ti_dac_powerdown_mode),
> > + IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ti_dac_powerdown_mode),
> > { },
> > };
> >
> > diff --git a/drivers/iio/magnetometer/hmc5843_core.c b/drivers/iio/magnetometer/hmc5843_core.c
> > index f08726bf5ec3..5a730d9bdbb0 100644
> > --- a/drivers/iio/magnetometer/hmc5843_core.c
> > +++ b/drivers/iio/magnetometer/hmc5843_core.c
> > @@ -246,7 +246,7 @@ static const struct iio_enum hmc5843_meas_conf_enum = {
> >
> > static const struct iio_chan_spec_ext_info hmc5843_ext_info[] = {
> > IIO_ENUM("meas_conf", IIO_SHARED_BY_TYPE, &hmc5843_meas_conf_enum),
> > - IIO_ENUM_AVAILABLE("meas_conf", &hmc5843_meas_conf_enum),
> > + IIO_ENUM_AVAILABLE("meas_conf", IIO_SHARED_BY_TYPE, &hmc5843_meas_conf_enum),
> > IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, hmc5843_get_mount_matrix),
> > { }
> > };
> > @@ -260,7 +260,7 @@ static const struct iio_enum hmc5983_meas_conf_enum = {
> >
> > static const struct iio_chan_spec_ext_info hmc5983_ext_info[] = {
> > IIO_ENUM("meas_conf", IIO_SHARED_BY_TYPE, &hmc5983_meas_conf_enum),
> > - IIO_ENUM_AVAILABLE("meas_conf", &hmc5983_meas_conf_enum),
> > + IIO_ENUM_AVAILABLE("meas_conf", IIO_SHARED_BY_TYPE, &hmc5983_meas_conf_enum),
> > IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, hmc5843_get_mount_matrix),
> > { }
> > };
> > diff --git a/drivers/iio/trigger/stm32-timer-trigger.c b/drivers/iio/trigger/stm32-timer-trigger.c
> > index 33083877cd19..02b87b0f9d70 100644
> > --- a/drivers/iio/trigger/stm32-timer-trigger.c
> > +++ b/drivers/iio/trigger/stm32-timer-trigger.c
> > @@ -696,9 +696,9 @@ static const struct iio_chan_spec_ext_info stm32_trigger_count_info[] = {
> > .write = stm32_count_set_preset
> > },
> > IIO_ENUM("enable_mode", IIO_SEPARATE, &stm32_enable_mode_enum),
> > - IIO_ENUM_AVAILABLE("enable_mode", &stm32_enable_mode_enum),
> > + IIO_ENUM_AVAILABLE("enable_mode", IIO_SHARED_BY_TYPE, &stm32_enable_mode_enum),
> > IIO_ENUM("trigger_mode", IIO_SEPARATE, &stm32_trigger_mode_enum),
> > - IIO_ENUM_AVAILABLE("trigger_mode", &stm32_trigger_mode_enum),
> > + IIO_ENUM_AVAILABLE("trigger_mode", IIO_SHARED_BY_TYPE, &stm32_trigger_mode_enum),
> > {}
> > };
> >
> > diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
> > index 324561b7a5e8..07025d6b3de1 100644
> > --- a/include/linux/iio/iio.h
> > +++ b/include/linux/iio/iio.h
> > @@ -103,15 +103,16 @@ ssize_t iio_enum_write(struct iio_dev *indio_dev,
> > /**
> > * IIO_ENUM_AVAILABLE() - Initialize enum available extended channel attribute
> > * @_name: Attribute name ("_available" will be appended to the name)
> > + * @_shared: Whether the attribute is shared between all channels
> > * @_e: Pointer to an iio_enum struct
> > *
> > * Creates a read only attribute which lists all the available enum items in a
> > * space separated list. This should usually be used together with IIO_ENUM()
> > */
> > -#define IIO_ENUM_AVAILABLE(_name, _e) \
> > +#define IIO_ENUM_AVAILABLE(_name, _shared, _e) \
> > { \
> > .name = (_name "_available"), \
> > - .shared = IIO_SHARED_BY_TYPE, \
> > + .shared = _shared, \
> > .read = iio_enum_available_read, \
> > .private = (uintptr_t)(_e), \
> > }
> > --
> > 2.34.0
> >

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