diff mbox series

[1/2] drivers: usb: musb: Fail if the ctrl mod register is missing

Message ID 20200422105027.89221-1-arnaud.ferraris@collabora.com
State Deferred
Delegated to: Tom Rini
Headers show
Series [1/2] drivers: usb: musb: Fail if the ctrl mod register is missing | expand

Commit Message

Arnaud Ferraris April 22, 2020, 10:50 a.m. UTC 
From: Sjoerd Simons <sjoerd.simons@collabora.co.uk>

If the trcl mode register address cannot be found error out rather then
trying to continue (which cannot work)

Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Signed-off-by: Arnaud Ferraris <arnaud.ferraris@collabora.com>
---

 drivers/usb/musb-new/ti-musb.c | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/drivers/usb/musb-new/ti-musb.c b/drivers/usb/musb-new/ti-musb.c
index 608facefa3..4e88652433 100644
--- a/drivers/usb/musb-new/ti-musb.c
+++ b/drivers/usb/musb-new/ti-musb.c
@@ -91,6 +91,11 @@  static int ti_musb_ofdata_to_platdata(struct udevice *dev)
 	phys = fdtdec_lookup_phandle(fdt, node, "phys");
 	ctrl_mod = fdtdec_lookup_phandle(fdt, phys, "ti,ctrl_mod");
 	platdata->ctrl_mod_base = (void *)fdtdec_get_addr(fdt, ctrl_mod, "reg");
+	if (platdata->ctrl_mod_base == FDT_ADDR_T_NONE) {
+		pr_err("MUSB ctrl mod missing\n");
+		return -ENOENT;
+	}
+
 	usb_index = ti_musb_get_usb_index(node);
 	switch (usb_index) {
 	case 1: