On m68k (which doesn't support generic hardirqs yet):

drivers/staging/iio/industrialio-trigger.c: In function ‘iio_trigger_poll’:
drivers/staging/iio/industrialio-trigger.c:180: error: implicit declaration of 
function ‘generic_handle_irq’
drivers/staging/iio/industrialio-trigger.c: In function 
‘iio_trigger_poll_chained’:
drivers/staging/iio/industrialio-trigger.c:200: error: implicit declaration of 
function ‘handle_nested_irq’
drivers/staging/iio/industrialio-trigger.c: In function ‘iio_trig_release’:
drivers/staging/iio/industrialio-trigger.c:379: error: implicit declaration of 
function ‘irq_modify_status’
drivers/staging/iio/industrialio-trigger.c:382: error: implicit declaration of 
function ‘irq_set_chip’
drivers/staging/iio/industrialio-trigger.c:384: error: implicit declaration of 
function ‘irq_set_handler’
drivers/staging/iio/industrialio-trigger.c:388: error: implicit declaration of 
function ‘irq_free_descs’
drivers/staging/iio/industrialio-trigger.c: In function ‘iio_trig_subirqmask’:
drivers/staging/iio/industrialio-trigger.c:402: error: implicit declaration of 
function ‘irq_data_get_irq_chip’
drivers/staging/iio/industrialio-trigger.c:402: warning: initialization makes 
pointer from integer without a cast
drivers/staging/iio/industrialio-trigger.c: In function ‘iio_trig_subirqunmask’:
drivers/staging/iio/industrialio-trigger.c:411: warning: initialization makes 
pointer from integer without a cast
drivers/staging/iio/industrialio-trigger.c: In function ‘iio_allocate_trigger’:
drivers/staging/iio/industrialio-trigger.c:432: error: implicit declaration of 
function ‘irq_alloc_descs’
drivers/staging/iio/industrialio-trigger.c:455: error: ‘handle_simple_irq’ 
undeclared (first use in this function)
drivers/staging/iio/industrialio-trigger.c:455: error: (Each undeclared 
identifier is reported only once
drivers/staging/iio/industrialio-trigger.c:455: error: for each function it 
appears in.)

Hence IIO_TRIGGER should depend on GENERIC_HARDIRQS.
But as IIO_TRIGGER and IIO_RING_BUFFER form a maze of dependencies and selects,
just make the whole IIO subsystem depend on GENERIC_HARDIRQS.

This dependency also covers !S390, so that one can be removed again.

Signed-off-by: Geert Uytterhoeven <[email protected]>
---
 drivers/staging/iio/Kconfig |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/staging/iio/Kconfig b/drivers/staging/iio/Kconfig
index f96d5b5..d329635 100644
--- a/drivers/staging/iio/Kconfig
+++ b/drivers/staging/iio/Kconfig
@@ -4,7 +4,7 @@
 
 menuconfig IIO
        tristate "Industrial I/O support"
-       depends on !S390
+       depends on GENERIC_HARDIRQS
        help
          The industrial I/O subsystem provides a unified framework for
          drivers for many different types of embedded sensors using a
-- 
1.7.0.4

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