kernel_optimize_test/drivers/uio
Alexandru Ardelean 3ec1bd7693 uio: fix irq init with dt support & irq not defined
This change also does a bit of a unification for the IRQ init code.

But the actual problem is that UIO_IRQ_NONE == 0, so for the DT case where
UIO_IRQ_NONE gets assigned to `uioinfo->irq`, a 2nd initialization will get
triggered (for the IRQ) and this one will exit via `goto bad1`.

As far as things seem to go, the only case where UIO_IRQ_NONE seems valid,
is when using a device-tree. The driver has some legacy support for old
platform_data structures. It looks like, for platform_data a non-existent
IRQ is an invalid case (or was considered an invalid case).
Which is why -ENXIO is treated only when a DT is used.

Signed-off-by: Dragos Bogdan <dragos.bogdan@analog.com>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Acked-by: Damian Hobson-Garcia <dhobsong@igel.co.jp>
Link: https://lore.kernel.org/r/20191105073212.16719-1-alexandru.ardelean@analog.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-14 11:49:48 +08:00
..
Kconfig
Makefile
uio_aec.c
uio_cif.c
uio_dmem_genirq.c uio: fix irq init with dt support & irq not defined 2019-11-14 11:49:48 +08:00
uio_fsl_elbc_gpcm.c
uio_hv_generic.c
uio_mf624.c
uio_netx.c
uio_pci_generic.c
uio_pdrv_genirq.c
uio_pruss.c
uio_sercos3.c
uio.c