If opera1_xilinx_rw fails, the mac address is not initialized.
And opera1_read_mac_address does not handle this failure, which leads to
the uninit-value in dvb_usb_adapter_dvb_init.
Fix this by handling the failure of opera1_xilinx_rw.
Signed-off-by: Zhang Shurong <zhang_shurong@xxxxxxxxxxx>
---
drivers/media/usb/dvb-usb/opera1.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/media/usb/dvb-usb/opera1.c b/drivers/media/usb/dvb-usb/opera1.c
index 98b2177667d2..d269f8bb2dee 100644
--- a/drivers/media/usb/dvb-usb/opera1.c
+++ b/drivers/media/usb/dvb-usb/opera1.c
@@ -439,9 +439,14 @@ MODULE_DEVICE_TABLE(usb, opera1_table);
static int opera1_read_mac_address(struct dvb_usb_device *d, u8 mac[6])
{
+ int ret;
u8 command[] = { READ_MAC_ADDR };
- opera1_xilinx_rw(d->udev, 0xb1, 0xa0, command, 1, OPERA_WRITE_MSG);
- opera1_xilinx_rw(d->udev, 0xb1, 0xa1, mac, 6, OPERA_READ_MSG);
+ ret = opera1_xilinx_rw(d->udev, 0xb1, 0xa0, command, 1, OPERA_WRITE_MSG);
+ if (ret)
+ return ret;
+ ret = opera1_xilinx_rw(d->udev, 0xb1, 0xa1, mac, 6, OPERA_READ_MSG);
+ if (ret)
+ return ret;
return 0;
}
static int opera1_xilinx_load_firmware(struct usb_device *dev,
--
2.30.2
