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gpio: tegra186: remove unneeded loop in tegra186_gpio_init_route_mapping()

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Reviewing the j loop over num_irqs_per_bank, in the code previous
to the fixes: commit, every j was used. now only when j == 0.
If only j == 0 is used, there is no need for the loop.

Fixes: 2103868047 ("gpio: tegra186: Support multiple interrupts per bank")
Signed-off-by: Tom Rix <trix@redhat.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
This commit is contained in:
Tom Rix 2023-01-25 13:26:31 -08:00 committed by Bartosz Golaszewski
parent eed5a3bfaf
commit 2e539b735d
1 changed files with 16 additions and 20 deletions
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36
drivers/gpio/gpio-tegra186.c
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@ -677,7 +677,7 @@ static const struct of_device_id tegra186_pmc_of_match[] = {
static void tegra186_gpio_init_route_mapping(struct tegra_gpio *gpio)
{
struct device *dev = gpio->gpio.parent;
unsigned int i, j;
unsigned int i;
u32 value;
for (i = 0; i < gpio->soc->num_ports; i++) {
@ -699,27 +699,23 @@ static void tegra186_gpio_init_route_mapping(struct tegra_gpio *gpio)
* On Tegra194 and later, each pin can be routed to one or more
* interrupts.
*/
for (j = 0; j < gpio->num_irqs_per_bank; j++) {
dev_dbg(dev, "programming default interrupt routing for port %s\n",
port->name);
dev_dbg(dev, "programming default interrupt routing for port %s\n",
port->name);
offset = TEGRA186_GPIO_INT_ROUTE_MAPPING(p, j);
offset = TEGRA186_GPIO_INT_ROUTE_MAPPING(p, 0);
/*
* By default we only want to route GPIO pins to IRQ 0. This works
* only under the assumption that we're running as the host kernel
* and hence all GPIO pins are owned by Linux.
*
* For cases where Linux is the guest OS, the hypervisor will have
* to configure the interrupt routing and pass only the valid
* interrupts via device tree.
*/
if (j == 0) {
value = readl(base + offset);
value = BIT(port->pins) - 1;
writel(value, base + offset);
}
}
/*
* By default we only want to route GPIO pins to IRQ 0. This works
* only under the assumption that we're running as the host kernel
* and hence all GPIO pins are owned by Linux.
*
* For cases where Linux is the guest OS, the hypervisor will have
* to configure the interrupt routing and pass only the valid
* interrupts via device tree.
*/
value = readl(base + offset);
value = BIT(port->pins) - 1;
writel(value, base + offset);
}
}
}