From: Laurentiu Tudor <[email protected]>
In order for kexec scenarios to work, implement a .shutdown() op for
the DPRC driver.
Signed-off-by: Laurentiu Tudor <[email protected]>
---
drivers/bus/fsl-mc/dprc-driver.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/drivers/bus/fsl-mc/dprc-driver.c b/drivers/bus/fsl-mc/dprc-driver.c
index 82bf3fe09273..405cd054c2ea 100644
--- a/drivers/bus/fsl-mc/dprc-driver.c
+++ b/drivers/bus/fsl-mc/dprc-driver.c
@@ -861,6 +861,30 @@ static int dprc_remove(struct fsl_mc_device *mc_dev)
return 0;
}
+/**
+ * dprc_shutdown - callback invoked when a DPRC should be quiesced
+ *
+ * @mc_dev: Pointer to fsl-mc device representing the DPRC
+ *
+ * Closes the DPRC device in the MC.
+ * It tears down the interrupts that were configured for the DPRC device.
+ * It destroys the interrupt pool associated with this MC bus.
+ */
+static void dprc_shutdown(struct fsl_mc_device *mc_dev)
+{
+ struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_dev);
+
+ if (!is_fsl_mc_bus_dprc(mc_dev))
+ return;
+
+ if (!mc_bus->irq_resources)
+ return;
+
+ dprc_cleanup(mc_dev);
+
+ dev_info(&mc_dev->dev, "DPRC device shutdown");
+}
+
static const struct fsl_mc_device_id match_id_table[] = {
{
.vendor = FSL_MC_VENDOR_FREESCALE,
@@ -877,6 +901,7 @@ static struct fsl_mc_driver dprc_driver = {
.match_id_table = match_id_table,
.probe = dprc_probe,
.remove = dprc_remove,
+ .shutdown = dprc_shutdown,
};
int __init dprc_driver_init(void)
--
2.17.1