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

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 31ccced5125e8035dd4cbb211136024af1b87e0a..8b492871d21d66a83241a7e66edddf89ea806e62 100644 (file)
--- a/drivers/usb/host/xhci-tegra.c
+++ b/drivers/usb/host/xhci-tegra.c
@@ -1563,7 +1563,7 @@ 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;