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

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commit d13b6a128a 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: 5df186e2ef ("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>

...

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Wayne Chang 2026-01-12 22:56:53 +08:00 • committed by Greg Kroah-Hartman

parent 69d1c05268

commit 11c82acb48

1 changed files with 1 additions and 1 deletions

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drivers/usb/host/xhci-tegra.c

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