spi: Try to get ACPI GPIO IRQ earlier

Since commit d24cfee7f63d ("spi: Fix acpi deferred irq probe"), the
acpi_dev_gpio_irq_get() call gets delayed till spi_probe() is called
on the SPI device.

If there is no driver for the SPI device then the move to spi_probe()
results in acpi_dev_gpio_irq_get() never getting called. This may
cause problems by leaving the GPIO pin floating because this call is
responsible for setting up the GPIO pin direction and/or bias according
to the values from the ACPI tables.

Re-add the removed acpi_dev_gpio_irq_get() in acpi_register_spi_device()
to ensure the GPIO pin is always correctly setup, while keeping the
acpi_dev_gpio_irq_get() call added to spi_probe() to deal with
-EPROBE_DEFER returns caused by the GPIO controller not having a driver
yet.

Link: https://bbs.archlinux.org/viewtopic.php?id=302348
Fixes: d24cfee7f63d ("spi: Fix acpi deferred irq probe")
Cc: stable@vger.kernel.org
Signed-off-by: Hans de Goede <hansg@kernel.org>
Link: https://patch.msgid.link/20251102190921.30068-1-hansg@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 2e0647a06890290e1c9dc4a347a0864329795b08..8588e8562220ff5f77977a91b869e220b400c0b2 100644 (file)
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -2851,6 +2851,16 @@ static acpi_status acpi_register_spi_device(struct spi_controller *ctlr,
        acpi_set_modalias(adev, acpi_device_hid(adev), spi->modalias,
                          sizeof(spi->modalias));
 
+       /*
+        * This gets re-tried in spi_probe() for -EPROBE_DEFER handling in case
+        * the GPIO controller does not have a driver yet. This needs to be done
+        * here too, because this call sets the GPIO direction and/or bias.
+        * Setting these needs to be done even if there is no driver, in which
+        * case spi_probe() will never get called.
+        */
+       if (spi->irq < 0)
+               spi->irq = acpi_dev_gpio_irq_get(adev, 0);
+
        acpi_device_set_enumerated(adev);
 
        adev->power.flags.ignore_parent = true;