On 2/28/23 22:02, Tanmay Shah wrote:
If child mailbox node status is disabled it causes
crash in interrupt handler. Fix this by assigning
only available child node during driver probe.
Signed-off-by: Tanmay Shah <tanmay.shah@xxxxxxx>
---
drivers/mailbox/zynqmp-ipi-mailbox.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mailbox/zynqmp-ipi-mailbox.c b/drivers/mailbox/zynqmp-ipi-mailbox.c
index 12e004ff1a14..e287ed7a92ce 100644
--- a/drivers/mailbox/zynqmp-ipi-mailbox.c
+++ b/drivers/mailbox/zynqmp-ipi-mailbox.c
@@ -634,7 +634,7 @@ static int zynqmp_ipi_probe(struct platform_device *pdev)
struct zynqmp_ipi_mbox *mbox;
int num_mboxes, ret = -EINVAL;
- num_mboxes = of_get_child_count(np);
+ num_mboxes = of_get_available_child_count(np);
pdata = devm_kzalloc(dev, sizeof(*pdata) + (num_mboxes * sizeof(*mbox)),
GFP_KERNEL);
if (!pdata)
I think it will be good to also check that num_mboxes is != 0.
M
