[PATCH v3 3/7] ACPI: RISC-V: Check acpi_get_handle() status in riscv_acpi_add_prt_dep()

[Lorenzo Pieralisi]

In riscv_acpi_add_prt_dep(), the acpi_get_handle() call can fail which
would leave link_handle uninitialized.

Fix it by checking the acpi_get_handle() return status and skip the entry
if it fails.

Fixes: 1b173cc4bfcd ("ACPI: RISC-V: Implement function to add implicit dependencies")
Signed-off-by: Lorenzo Pieralisi <lpieralisi at kernel.org>
Tested-by: Sunil V L <sunilvl at oss.qualcomm.com>
Reviewed-by: Sunil V L <sunilvl at oss.qualcomm.com>
Cc: "Rafael J. Wysocki" <rafael at kernel.org>
Cc: Sunil V L <sunilvl at ventanamicro.com>
---
 drivers/acpi/riscv/irq.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/acpi/riscv/irq.c b/drivers/acpi/riscv/irq.c
index cd83c3035cf6..75170151c614 100644
--- a/drivers/acpi/riscv/irq.c
+++ b/drivers/acpi/riscv/irq.c
@@ -339,7 +339,9 @@ static u32 riscv_acpi_add_prt_dep(acpi_handle handle)
 	entry = buffer.pointer;
 	while (entry && (entry->length > 0)) {
 		if (entry->source[0]) {
-			acpi_get_handle(handle, entry->source, &link_handle);
+			status = acpi_get_handle(handle, entry->source, &link_handle);
+			if (ACPI_FAILURE(status))
+				continue;
 			dep_devices.count = 1;
 			dep_devices.handles = kzalloc_objs(*dep_devices.handles,
 							   1);

-- 
2.34.1