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pinctrl: sh-pfc: Do not use platform_get_irq() to count interrupts

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commit ad7fe1a1a35994a201497443b5140bf54b074cca upstream.

As platform_get_irq() now prints an error when the interrupt does not
exist, counting interrupts by looping until failure causes the printing
of scary messages like:

    sh-pfc e6060000.pin-controller: IRQ index 0 not found

Fix this by using the platform_irq_count() helper instead.

Fixes: 7723f4c5ec ("driver core: platform: Add an error message to platform_get_irq*()")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20191016142601.28255-1-geert+renesas@glider.be
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Geert Uytterhoeven 2019-10-16 16:26:01 +02:00 • committed by Greg Kroah-Hartman
commit bb0b1fc11c
1 changed files with 6 additions and 10 deletions
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16
drivers/pinctrl/sh-pfc/core.c
View file

@ -29,12 +29,12 @@
static int sh_pfc_map_resources(struct sh_pfc *pfc,
struct platform_device *pdev)
{
unsigned int num_windows, num_irqs;
struct sh_pfc_window *windows;
unsigned int *irqs = NULL;
unsigned int num_windows;
struct resource *res;
unsigned int i;
int irq;
int num_irqs;
/* Count the MEM and IRQ resources. */
for (num_windows = 0;; num_windows++) {
@ -42,17 +42,13 @@ static int sh_pfc_map_resources(struct sh_pfc *pfc,
if (!res)
break;
}
for (num_irqs = 0;; num_irqs++) {
irq = platform_get_irq(pdev, num_irqs);
if (irq == -EPROBE_DEFER)
return irq;
if (irq < 0)
break;
}
if (num_windows == 0)
return -EINVAL;
num_irqs = platform_irq_count(pdev);
if (num_irqs < 0)
return num_irqs;
/* Allocate memory windows and IRQs arrays. */
windows = devm_kcalloc(pfc->dev, num_windows, sizeof(*windows),
GFP_KERNEL);