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Subject: [media] cx231xx: can't proceed if I2C bus register fails
Author: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>
Date: Mon Sep 5 05:56:37 2016 -0300
The driver should not ignore errors while registering the I2C
bus, as this device can't even minimally work without the buses,
as it uses those buses internally to talk with the several IP
blocks inside the chip.
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>
drivers/media/usb/cx231xx/cx231xx-core.c | 24 +++++++++++++++++++-----
1 file changed, 19 insertions(+), 5 deletions(-)
---
diff --git a/drivers/media/usb/cx231xx/cx231xx-core.c b/drivers/media/usb/cx231xx/cx231xx-core.c
index a4f49a83f869..8b099fe1d592 100644
--- a/drivers/media/usb/cx231xx/cx231xx-core.c
+++ b/drivers/media/usb/cx231xx/cx231xx-core.c
@@ -1324,15 +1324,29 @@ int cx231xx_dev_init(struct cx231xx *dev)
dev->i2c_bus[2].i2c_reserve = 0;
/* register I2C buses */
- cx231xx_i2c_register(&dev->i2c_bus[0]);
- cx231xx_i2c_register(&dev->i2c_bus[1]);
- cx231xx_i2c_register(&dev->i2c_bus[2]);
+ errCode = cx231xx_i2c_register(&dev->i2c_bus[0]);
+ if (errCode < 0)
+ return errCode;
+ errCode = cx231xx_i2c_register(&dev->i2c_bus[1]);
+ if (errCode < 0)
+ return errCode;
+ errCode = cx231xx_i2c_register(&dev->i2c_bus[2]);
+ if (errCode < 0)
+ return errCode;
errCode = cx231xx_i2c_mux_create(dev);
+ if (errCode < 0) {
+ dev_err(dev->dev,
+ "%s: Failed to create I2C mux\n", __func__);
+ return errCode;
+ }
+ errCode = cx231xx_i2c_mux_register(dev, 0);
+ if (errCode < 0)
+ return errCode;
+
+ errCode = cx231xx_i2c_mux_register(dev, 1);
if (errCode < 0)
return errCode;
- cx231xx_i2c_mux_register(dev, 0);
- cx231xx_i2c_mux_register(dev, 1);
/* scan the real bus segments in the order of physical port numbers */
cx231xx_do_i2c_scan(dev, I2C_0);
--
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