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Subject[PATCH v2] pinctrl: sh-pfc: Do not use platform_get_irq() to count interrupts
Date
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: 7723f4c5ecdb8d83 ("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>
---
v2:
- Add Reviewed-by, Tested-by.

Linus: Can you please take this one, as it is a fix for v5.4? Thx!
---
drivers/pinctrl/sh-pfc/core.c | 16 ++++++----------
1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/drivers/pinctrl/sh-pfc/core.c b/drivers/pinctrl/sh-pfc/core.c
index 1745c0639932c7a7..a5a794cbf997f7a3 100644
--- a/drivers/pinctrl/sh-pfc/core.c
+++ b/drivers/pinctrl/sh-pfc/core.c
@@ -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);
--
2.17.1
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