In dvb_usb_i2c_init, if i2c_add_adapter fails, it only prints an error
message, and then continues to set DVB_USB_STATE_I2C. This affects the
logic of dvb_usb_i2c_exit, which leads to that, the deletion of i2c_adap
even if the i2c_add_adapter fails.
Fix this by returning at the failure of i2c_add_adapter and then move
dvb_usb_i2c_exit out of the error handling code of dvb_usb_i2c_init.
Fixes: 13a79f14ab28 ("media: dvb-usb: Fix memory leak at error in dvb_usb_device_init()")
Signed-off-by: Dongliang Mu <mudongliangabcd@xxxxxxxxx>
---
drivers/media/usb/dvb-usb/dvb-usb-i2c.c | 9 +++++++--
drivers/media/usb/dvb-usb/dvb-usb-init.c | 3 ++-
2 files changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/media/usb/dvb-usb/dvb-usb-i2c.c b/drivers/media/usb/dvb-usb/dvb-usb-i2c.c
index 2e07106f4680..bc4b2abdde1a 100644
--- a/drivers/media/usb/dvb-usb/dvb-usb-i2c.c
+++ b/drivers/media/usb/dvb-usb/dvb-usb-i2c.c
@@ -17,7 +17,8 @@ int dvb_usb_i2c_init(struct dvb_usb_device *d)
if (d->props.i2c_algo == NULL) {
err("no i2c algorithm specified");
- return -EINVAL;
+ ret = -EINVAL;
+ goto err;
}
strscpy(d->i2c_adap.name, d->desc->name, sizeof(d->i2c_adap.name));
@@ -27,11 +28,15 @@ int dvb_usb_i2c_init(struct dvb_usb_device *d)
i2c_set_adapdata(&d->i2c_adap, d);
- if ((ret = i2c_add_adapter(&d->i2c_adap)) < 0)
+ ret = i2c_add_adapter(&d->i2c_adap);
+ if (ret < 0) {
err("could not add i2c adapter");
+ goto err;
+ }
d->state |= DVB_USB_STATE_I2C;
+err:
return ret;
}
diff --git a/drivers/media/usb/dvb-usb/dvb-usb-init.c b/drivers/media/usb/dvb-usb/dvb-usb-init.c
index 21ad51be4820..ae3f76787279 100644
--- a/drivers/media/usb/dvb-usb/dvb-usb-init.c
+++ b/drivers/media/usb/dvb-usb/dvb-usb-init.c
@@ -147,6 +147,7 @@ static int dvb_usb_exit(struct dvb_usb_device *d)
d->props.priv_destroy(d);
kfree(d->priv);
+ d->priv = NULL;
return 0;
}
@@ -193,8 +194,8 @@ static int dvb_usb_init(struct dvb_usb_device *d, short *adapter_nums)
err_adapter_init:
dvb_usb_adapter_exit(d);
-err_i2c_init:
dvb_usb_i2c_exit(d);
+err_i2c_init:
if (d->priv && d->props.priv_destroy)
d->props.priv_destroy(d);
err_priv_init:
--
2.25.1
