* [PATCH AUTOSEL 5.15 03/10] gpio: ixp4xx: Make irqchip immutable
[not found] <20220921155407.235132-1-sashal@kernel.org>
@ 2022-09-21 15:54 ` Sasha Levin
2022-09-21 15:54 ` [PATCH AUTOSEL 5.15 10/10] drm/rockchip: Fix return type of cdn_dp_connector_mode_valid Sasha Levin
1 sibling, 0 replies; 2+ messages in thread
From: Sasha Levin @ 2022-09-21 15:54 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Linus Walleij, Marc Zyngier, Bartosz Golaszewski, Sasha Levin,
linusw, kaloz, khalasa, linux-arm-kernel, linux-gpio
From: Linus Walleij <linus.walleij@linaro.org>
[ Upstream commit 94e9bc73d85aa6ecfe249e985ff57abe0ab35f34 ]
This turns the IXP4xx GPIO irqchip into an immutable
irqchip, a bit different from the standard template due
to being hierarchical.
Tested on the IXP4xx which uses drivers/ata/pata_ixp4xx_cf.c
for a rootfs on compact flash with IRQs from this GPIO
block to the CF ATA controller.
Cc: Marc Zyngier <maz@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpio/gpio-ixp4xx.c | 17 ++++++++++++++---
1 file changed, 14 insertions(+), 3 deletions(-)
diff --git a/drivers/gpio/gpio-ixp4xx.c b/drivers/gpio/gpio-ixp4xx.c
index b3b050604e0b..6bd047e2ca46 100644
--- a/drivers/gpio/gpio-ixp4xx.c
+++ b/drivers/gpio/gpio-ixp4xx.c
@@ -67,6 +67,14 @@ static void ixp4xx_gpio_irq_ack(struct irq_data *d)
__raw_writel(BIT(d->hwirq), g->base + IXP4XX_REG_GPIS);
}
+static void ixp4xx_gpio_mask_irq(struct irq_data *d)
+{
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+
+ irq_chip_mask_parent(d);
+ gpiochip_disable_irq(gc, d->hwirq);
+}
+
static void ixp4xx_gpio_irq_unmask(struct irq_data *d)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
@@ -76,6 +84,7 @@ static void ixp4xx_gpio_irq_unmask(struct irq_data *d)
if (!(g->irq_edge & BIT(d->hwirq)))
ixp4xx_gpio_irq_ack(d);
+ gpiochip_enable_irq(gc, d->hwirq);
irq_chip_unmask_parent(d);
}
@@ -153,12 +162,14 @@ static int ixp4xx_gpio_irq_set_type(struct irq_data *d, unsigned int type)
return irq_chip_set_type_parent(d, IRQ_TYPE_LEVEL_HIGH);
}
-static struct irq_chip ixp4xx_gpio_irqchip = {
+static const struct irq_chip ixp4xx_gpio_irqchip = {
.name = "IXP4GPIO",
.irq_ack = ixp4xx_gpio_irq_ack,
- .irq_mask = irq_chip_mask_parent,
+ .irq_mask = ixp4xx_gpio_mask_irq,
.irq_unmask = ixp4xx_gpio_irq_unmask,
.irq_set_type = ixp4xx_gpio_irq_set_type,
+ .flags = IRQCHIP_IMMUTABLE,
+ GPIOCHIP_IRQ_RESOURCE_HELPERS,
};
static int ixp4xx_gpio_child_to_parent_hwirq(struct gpio_chip *gc,
@@ -282,7 +293,7 @@ static int ixp4xx_gpio_probe(struct platform_device *pdev)
g->gc.owner = THIS_MODULE;
girq = &g->gc.irq;
- girq->chip = &ixp4xx_gpio_irqchip;
+ gpio_irq_chip_set_chip(girq, &ixp4xx_gpio_irqchip);
girq->fwnode = g->fwnode;
girq->parent_domain = parent;
girq->child_to_parent_hwirq = ixp4xx_gpio_child_to_parent_hwirq;
--
2.35.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [PATCH AUTOSEL 5.15 10/10] drm/rockchip: Fix return type of cdn_dp_connector_mode_valid
[not found] <20220921155407.235132-1-sashal@kernel.org>
2022-09-21 15:54 ` [PATCH AUTOSEL 5.15 03/10] gpio: ixp4xx: Make irqchip immutable Sasha Levin
@ 2022-09-21 15:54 ` Sasha Levin
1 sibling, 0 replies; 2+ messages in thread
From: Sasha Levin @ 2022-09-21 15:54 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Nathan Huckleberry, Dan Carpenter, llvm, Nathan Chancellor,
Heiko Stuebner, Sasha Levin, hjc, airlied, daniel, ndesaulniers,
dri-devel, linux-arm-kernel, linux-rockchip
From: Nathan Huckleberry <nhuck@google.com>
[ Upstream commit b0b9408f132623dc88e78adb5282f74e4b64bb57 ]
The mode_valid field in drm_connector_helper_funcs is expected to be of
type:
enum drm_mode_status (* mode_valid) (struct drm_connector *connector,
struct drm_display_mode *mode);
The mismatched return type breaks forward edge kCFI since the underlying
function definition does not match the function hook definition.
The return type of cdn_dp_connector_mode_valid should be changed from
int to enum drm_mode_status.
Reported-by: Dan Carpenter <error27@gmail.com>
Link: https://github.com/ClangBuiltLinux/linux/issues/1703
Cc: llvm@lists.linux.dev
Signed-off-by: Nathan Huckleberry <nhuck@google.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220913205555.155149-1-nhuck@google.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/rockchip/cdn-dp-core.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c
index 13c6b857158f..6b5d0722afa6 100644
--- a/drivers/gpu/drm/rockchip/cdn-dp-core.c
+++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c
@@ -277,8 +277,9 @@ static int cdn_dp_connector_get_modes(struct drm_connector *connector)
return ret;
}
-static int cdn_dp_connector_mode_valid(struct drm_connector *connector,
- struct drm_display_mode *mode)
+static enum drm_mode_status
+cdn_dp_connector_mode_valid(struct drm_connector *connector,
+ struct drm_display_mode *mode)
{
struct cdn_dp_device *dp = connector_to_dp(connector);
struct drm_display_info *display_info = &dp->connector.display_info;
--
2.35.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 2+ messages in thread
end of thread, other threads:[~2022-09-21 15:56 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
[not found] <20220921155407.235132-1-sashal@kernel.org>
2022-09-21 15:54 ` [PATCH AUTOSEL 5.15 03/10] gpio: ixp4xx: Make irqchip immutable Sasha Levin
2022-09-21 15:54 ` [PATCH AUTOSEL 5.15 10/10] drm/rockchip: Fix return type of cdn_dp_connector_mode_valid Sasha Levin
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).