[PATCH] clk: bcm: rpi: Fix potential NULL pointer dereference

[Chenyuan Yang]

The `init.name` could be NULL. Add missing check in the
raspberrypi_clk_register().
This is similar to commit 3027e7b15b02
("ice: Fix some null pointer dereference issues in ice_ptp.c").
Besides, bcm2835_register_pll_divider() under the same directory also
has a very similar check.

Signed-off-by: Chenyuan Yang <chenyuan0y@xxxxxxxxx>
---
 drivers/clk/bcm/clk-raspberrypi.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/clk/bcm/clk-raspberrypi.c b/drivers/clk/bcm/clk-raspberrypi.c
index 0e1fe3759530..720acc10f8aa 100644
--- a/drivers/clk/bcm/clk-raspberrypi.c
+++ b/drivers/clk/bcm/clk-raspberrypi.c
@@ -286,6 +286,8 @@ static struct clk_hw *raspberrypi_clk_register(struct raspberrypi_clk *rpi,
 	init.name = devm_kasprintf(rpi->dev, GFP_KERNEL,
 				   "fw-clk-%s",
 				   rpi_firmware_clk_names[id]);
+	if (!init.name)
+		return ERR_PTR(-ENOMEM);
 	init.ops = &raspberrypi_firmware_clk_ops;
 	init.flags = CLK_GET_RATE_NOCACHE;
 
-- 
2.34.1