usb: host: xhci-tegra: Use platform_get_irq_optional() for wake IRQs

commit d13b6a128a12e528bb18f971f2969feb286f45c7 upstream.

When some wake IRQs are disabled in the device tree, the corresponding
interrupt entries are removed from DT. In such cases, the driver
currently calls platform_get_irq(), which returns -ENXIO and logs
an error like:

  tegra-xusb 3610000.usb: error -ENXIO: IRQ index 2 not found

However, not all wake IRQs are mandatory. The hardware can operate
normally even if some wake sources are not defined in DT. To avoid this
false alarm and allow missing wake IRQs gracefully, use
platform_get_irq_optional() instead of platform_get_irq().

Fixes: 5df186e2ef11 ("usb: xhci: tegra: Support USB wakeup function for Tegra234")
Cc: stable <stable@kernel.org>
Signed-off-by: Wayne Chang <waynec@nvidia.com>
Signed-off-by: Wei-Cheng Chen <weichengc@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://patch.msgid.link/20260112145653.95691-1-weichengc@nvidia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/host/xhci-tegra.c b/drivers/usb/host/xhci-tegra.c
index 5255b10028931c5e878089a23121bbc371b3e10e..c78bed0aa844ea319b3e85d905e2eb1cce9f1681 100644 (file)
--- a/drivers/usb/host/xhci-tegra.c
+++ b/drivers/usb/host/xhci-tegra.c
@@ -1564,7 +1564,7 @@ static int tegra_xusb_setup_wakeup(struct platform_device *pdev, struct tegra_xu
        for (i = 0; i < tegra->soc->max_num_wakes; i++) {
                struct irq_data *data;
 
-               tegra->wake_irqs[i] = platform_get_irq(pdev, i + WAKE_IRQ_START_INDEX);
+               tegra->wake_irqs[i] = platform_get_irq_optional(pdev, i + WAKE_IRQ_START_INDEX);
                if (tegra->wake_irqs[i] < 0)
                        break;