mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-04 08:08:54 +00:00
Code Issues Releases Wiki Activity

pinctrl: mcp23s08: Allocate irq_chip dynamic

Browse source 
Keeping the irq_chip definition static shares it with multiple instances
of the mcp23s08 gpiochip in the system. This is bad and now we get this
warning from gpiolib core:

"detected irqchip that is shared with multiple gpiochips: please fix the
driver."

Hence, move the irq_chip definition from being driver static into the
struct mcp23s08. So a unique irq_chip is used for each gpiochip
instance.

Signed-off-by: Lars Poeschel <poeschel@lemonage.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Lars Poeschel 2019-01-11 17:25:16 +01:00 committed by Linus Walleij
parent f4f1b07469
commit 19ab5ca9b7
1 changed files with 17 additions and 11 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

28
drivers/pinctrl/pinctrl-mcp23s08.c
View file

@ -68,6 +68,7 @@ struct mcp23s08 {
struct mutex lock;
struct gpio_chip chip;
struct irq_chip irq_chip;
struct regmap *regmap;
struct device *dev;
@ -607,15 +608,6 @@ static void mcp23s08_irq_bus_unlock(struct irq_data *data)
mutex_unlock(&mcp->lock);
}
static struct irq_chip mcp23s08_irq_chip = {
.name = "gpio-mcp23xxx",
.irq_mask = mcp23s08_irq_mask,
.irq_unmask = mcp23s08_irq_unmask,
.irq_set_type = mcp23s08_irq_set_type,
.irq_bus_lock = mcp23s08_irq_bus_lock,
.irq_bus_sync_unlock = mcp23s08_irq_bus_unlock,
};
static int mcp23s08_irq_setup(struct mcp23s08 *mcp)
{
struct gpio_chip *chip = &mcp->chip;
@ -645,7 +637,7 @@ static int mcp23s08_irqchip_setup(struct mcp23s08 *mcp)
int err;
err = gpiochip_irqchip_add_nested(chip,
&mcp23s08_irq_chip,
&mcp->irq_chip,
0,
handle_simple_irq,
IRQ_TYPE_NONE);
@ -656,7 +648,7 @@ static int mcp23s08_irqchip_setup(struct mcp23s08 *mcp)
}
gpiochip_set_nested_irqchip(chip,
&mcp23s08_irq_chip,
&mcp->irq_chip,
mcp->irq);
return 0;
@ -1042,6 +1034,13 @@ static int mcp230xx_probe(struct i2c_client *client,
return -ENOMEM;
mcp->irq = client->irq;
mcp->irq_chip.name = dev_name(&client->dev);
mcp->irq_chip.irq_mask = mcp23s08_irq_mask;
mcp->irq_chip.irq_unmask = mcp23s08_irq_unmask;
mcp->irq_chip.irq_set_type = mcp23s08_irq_set_type;
mcp->irq_chip.irq_bus_lock = mcp23s08_irq_bus_lock;
mcp->irq_chip.irq_bus_sync_unlock = mcp23s08_irq_bus_unlock;
status = mcp23s08_probe_one(mcp, &client->dev, client, client->addr,
id->driver_data, pdata->base, 0);
if (status)
@ -1151,6 +1150,13 @@ static int mcp23s08_probe(struct spi_device *spi)
chips--;
data->mcp[addr] = &data->chip[chips];
data->mcp[addr]->irq = spi->irq;
data->mcp[addr]->irq_chip.name = dev_name(&spi->dev);
data->mcp[addr]->irq_chip.irq_mask = mcp23s08_irq_mask;
data->mcp[addr]->irq_chip.irq_unmask = mcp23s08_irq_unmask;
data->mcp[addr]->irq_chip.irq_set_type = mcp23s08_irq_set_type;
data->mcp[addr]->irq_chip.irq_bus_lock = mcp23s08_irq_bus_lock;
data->mcp[addr]->irq_chip.irq_bus_sync_unlock =
mcp23s08_irq_bus_unlock;
status = mcp23s08_probe_one(data->mcp[addr], &spi->dev, spi,
0x40 | (addr << 1), type,
pdata->base, addr);