As per zynqmp-ipi bindings, zynqmp IPI node can have multiple child nodes. Current IPI setup function is set only for first child node. If IPI node has multiple child nodes in the device-tree, then IPI setup fails for child nodes other than first child node. In such case kernel will crash. Fix this crash by registering IPI setup function for each available child node.

Cc: stable@vger.kernel.org Fixes: 41bcf30100c5 (mailbox: zynqmp: Move buffered IPI setup) Signed-off-by: Tanmay Shah tanmay.shah@amd.com Reviewed-by: Michal Simek michal.simek@amd.com ---

Changes in v2: - Add Fixes tag

drivers/mailbox/zynqmp-ipi-mailbox.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/mailbox/zynqmp-ipi-mailbox.c b/drivers/mailbox/zynqmp-ipi-mailbox.c index 521d08b9ab47..815e0492f029 100644 --- a/drivers/mailbox/zynqmp-ipi-mailbox.c +++ b/drivers/mailbox/zynqmp-ipi-mailbox.c @@ -940,10 +940,10 @@ static int zynqmp_ipi_probe(struct platform_device *pdev) pdata->num_mboxes = num_mboxes;

mbox = pdata->ipi_mboxes; - mbox->setup_ipi_fn = ipi_fn; - for_each_available_child_of_node(np, nc) { mbox->pdata = pdata; + mbox->setup_ipi_fn = ipi_fn; + ret = zynqmp_ipi_mbox_probe(mbox, nc); if (ret) { of_node_put(nc);

base-commit: 28955f4fa2823e39f1ecfb3a37a364563527afbc