diff options
| author | Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> | 2022-07-07 21:23:12 +0300 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2022-07-10 11:30:00 +0300 |
| commit | 08f12b4534c274c67245019021961206e7a3eefa (patch) | |
| tree | 910edd57e29eccfd4ce653e45ac961cfd16c4766 /drivers/gpio/gpiolib.c | |
| parent | 3fed09559cd8be79568d368ce02bf7f2d56259b6 (diff) | |
| download | linux-08f12b4534c274c67245019021961206e7a3eefa.tar.xz | |
gpio: gpiolib: Allow free() callback to be overridden
Allow free() callback to be overridden from irq_domain_ops for
hierarchical chips.
This allows drivers to free up resources which are allocated during
child_to_parent_hwirq()/populate_parent_alloc_arg() callbacks.
On Renesas RZ/G2L platform a bitmap is maintained for TINT slots, a slot
is allocated in child_to_parent_hwirq() callback which is freed up in free
callback hence this override.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220707182314.66610-5-prabhakar.mahadev-lad.rj@bp.renesas.com
Diffstat (limited to 'drivers/gpio/gpiolib.c')
| -rw-r--r-- | drivers/gpio/gpiolib.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index bfde94243752..68d9f95d7799 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -1181,15 +1181,18 @@ static void gpiochip_hierarchy_setup_domain_ops(struct irq_domain_ops *ops) ops->activate = gpiochip_irq_domain_activate; ops->deactivate = gpiochip_irq_domain_deactivate; ops->alloc = gpiochip_hierarchy_irq_domain_alloc; - ops->free = irq_domain_free_irqs_common; /* - * We only allow overriding the translate() function for + * We only allow overriding the translate() and free() functions for * hierarchical chips, and this should only be done if the user - * really need something other than 1:1 translation. + * really need something other than 1:1 translation for translate() + * callback and free if user wants to free up any resources which + * were allocated during callbacks, for example populate_parent_alloc_arg. */ if (!ops->translate) ops->translate = gpiochip_hierarchy_irq_domain_translate; + if (!ops->free) + ops->free = irq_domain_free_irqs_common; } static int gpiochip_hierarchy_add_domain(struct gpio_chip *gc) |