* [PATCH] [input]: hid-cp2112: fix multiple gpiochips
@ 2021-01-09 22:36 Douglas Gilbert
2021-03-08 13:56 ` Jiri Kosina
0 siblings, 1 reply; 2+ messages in thread
From: Douglas Gilbert @ 2021-01-09 22:36 UTC (permalink / raw)
To: linux-input, linux-usb; +Cc: jikos, benjamin.tissoires
In lk 5.11.0-rc2 connecting a USB based Silicon Labs HID to I2C
bridge evaluation board (CP2112EK) causes this warning:
gpio gpiochip0: (cp2112_gpio): detected irqchip that is shared
with multiple gpiochips: please fix the driver
Simply copy what other gpio related drivers do to fix this
particular warning: replicate the struct irq_chip object in each
device instance rather than have a static object which makes that
object (incorrectly) shared by each device.
Signed-off-by: Douglas Gilbert <dgilbert@interlog.com>
---
drivers/hid/hid-cp2112.c | 22 +++++++++++-----------
1 file changed, 11 insertions(+), 11 deletions(-)
diff --git a/drivers/hid/hid-cp2112.c b/drivers/hid/hid-cp2112.c
index 21e15627a461..477baa30889c 100644
--- a/drivers/hid/hid-cp2112.c
+++ b/drivers/hid/hid-cp2112.c
@@ -161,6 +161,7 @@ struct cp2112_device {
atomic_t read_avail;
atomic_t xfer_avail;
struct gpio_chip gc;
+ struct irq_chip irq;
u8 *in_out_buffer;
struct mutex lock;
@@ -1175,16 +1176,6 @@ static int cp2112_gpio_irq_type(struct irq_data *d, unsigned int type)
return 0;
}
-static struct irq_chip cp2112_gpio_irqchip = {
- .name = "cp2112-gpio",
- .irq_startup = cp2112_gpio_irq_startup,
- .irq_shutdown = cp2112_gpio_irq_shutdown,
- .irq_ack = cp2112_gpio_irq_ack,
- .irq_mask = cp2112_gpio_irq_mask,
- .irq_unmask = cp2112_gpio_irq_unmask,
- .irq_set_type = cp2112_gpio_irq_type,
-};
-
static int __maybe_unused cp2112_allocate_irq(struct cp2112_device *dev,
int pin)
{
@@ -1339,8 +1330,17 @@ static int cp2112_probe(struct hid_device *hdev, const struct hid_device_id *id)
dev->gc.can_sleep = 1;
dev->gc.parent = &hdev->dev;
+ dev->irq.name = "cp2112-gpio";
+ dev->irq.irq_startup = cp2112_gpio_irq_startup;
+ dev->irq.irq_shutdown = cp2112_gpio_irq_shutdown;
+ dev->irq.irq_ack = cp2112_gpio_irq_ack;
+ dev->irq.irq_mask = cp2112_gpio_irq_mask;
+ dev->irq.irq_unmask = cp2112_gpio_irq_unmask;
+ dev->irq.irq_set_type = cp2112_gpio_irq_type;
+ dev->irq.flags = IRQCHIP_MASK_ON_SUSPEND;
+
girq = &dev->gc.irq;
- girq->chip = &cp2112_gpio_irqchip;
+ girq->chip = &dev->irq;
/* The event comes from the outside so no parent handler */
girq->parent_handler = NULL;
girq->num_parents = 0;
--
2.25.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] [input]: hid-cp2112: fix multiple gpiochips
2021-01-09 22:36 [PATCH] [input]: hid-cp2112: fix multiple gpiochips Douglas Gilbert
@ 2021-03-08 13:56 ` Jiri Kosina
0 siblings, 0 replies; 2+ messages in thread
From: Jiri Kosina @ 2021-03-08 13:56 UTC (permalink / raw)
To: Douglas Gilbert; +Cc: linux-input, linux-usb, benjamin.tissoires
On Sat, 9 Jan 2021, Douglas Gilbert wrote:
> In lk 5.11.0-rc2 connecting a USB based Silicon Labs HID to I2C
> bridge evaluation board (CP2112EK) causes this warning:
> gpio gpiochip0: (cp2112_gpio): detected irqchip that is shared
> with multiple gpiochips: please fix the driver
>
> Simply copy what other gpio related drivers do to fix this
> particular warning: replicate the struct irq_chip object in each
> device instance rather than have a static object which makes that
> object (incorrectly) shared by each device.
>
> Signed-off-by: Douglas Gilbert <dgilbert@interlog.com>
Applied, thanks for the fix, and sorry for the delay.
--
Jiri Kosina
SUSE Labs
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