From: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
Date: Thu, 13 Oct 2016 10:50:24 +0200
The kfree() function was called in one case by the
redrat3_transmit_ir() function during error handling
even if the passed variable contained a null pointer.
* Adjust jump targets according to the Linux coding style convention.
* Move the resetting for the data structure member "transmitting"
at the end.
* Delete initialisations for the variables "irdata" and "sample_lens"
at the beginning which became unnecessary with this refactoring.
Signed-off-by: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
---
drivers/media/rc/redrat3.c | 18 ++++++++----------
1 file changed, 8 insertions(+), 10 deletions(-)
diff --git a/drivers/media/rc/redrat3.c b/drivers/media/rc/redrat3.c
index 7ae2ced..71e901d 100644
--- a/drivers/media/rc/redrat3.c
+++ b/drivers/media/rc/redrat3.c
@@ -723,10 +723,10 @@ static int redrat3_transmit_ir(struct rc_dev *rcdev, unsigned *txbuf,
{
struct redrat3_dev *rr3 = rcdev->priv;
struct device *dev = rr3->dev;
- struct redrat3_irdata *irdata = NULL;
+ struct redrat3_irdata *irdata;
int ret, ret_len;
int lencheck, cur_sample_len, pipe;
- int *sample_lens = NULL;
+ int *sample_lens;
u8 curlencheck;
unsigned i, sendbuf_len;
@@ -747,7 +747,7 @@ static int redrat3_transmit_ir(struct rc_dev *rcdev, unsigned *txbuf,
irdata = kzalloc(sizeof(*irdata), GFP_KERNEL);
if (!irdata) {
ret = -ENOMEM;
- goto out;
+ goto free_sample;
}
/* rr3 will disable rc detector on transmit */
@@ -776,7 +776,7 @@ static int redrat3_transmit_ir(struct rc_dev *rcdev, unsigned *txbuf,
curlencheck++;
} else {
ret = -EINVAL;
- goto out;
+ goto reset_member;
}
}
irdata->sigdata[i] = lencheck;
@@ -811,14 +811,12 @@ static int redrat3_transmit_ir(struct rc_dev *rcdev, unsigned *txbuf,
dev_err(dev, "Error: control msg send failed, rc %d\n", ret);
else
ret = count;
-
-out:
- kfree(irdata);
- kfree(sample_lens);
-
+reset_member:
rr3->transmitting = false;
/* rr3 re-enables rc detector because it was enabled before */
-
+ kfree(irdata);
+free_sample:
+ kfree(sample_lens);
return ret;
}
--
2.10.1
--
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