* [PATCH] [media] cx18: remove redundant zero check on retval
@ 2018-06-11 15:10 Colin King
2018-06-12 9:07 ` Dan Carpenter
0 siblings, 1 reply; 3+ messages in thread
From: Colin King @ 2018-06-11 15:10 UTC (permalink / raw)
To: Stefan Richter, Mauro Carvalho Chehab, Andy Walls, Liam Girdwood,
Mark Brown, linux-media, linux1394-devel
Cc: kernel-janitors, linux-kernel
From: Colin Ian King <colin.king@canonical.com>
The check for a zero retval is redundant as all paths that lead to
this point have set retval to an error return value that is non-zero.
Remove the redundant check.
Detected by CoverityScan, CID#102589 ("Logically dead code")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
drivers/media/firewire/firedtv-fw.c | 3 +++
drivers/media/pci/cx18/cx18-driver.c | 2 --
drivers/regulator/vctrl-regulator.c | 2 +-
3 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/media/firewire/firedtv-fw.c b/drivers/media/firewire/firedtv-fw.c
index 92f4112d2e37..eed55be21836 100644
--- a/drivers/media/firewire/firedtv-fw.c
+++ b/drivers/media/firewire/firedtv-fw.c
@@ -271,6 +271,9 @@ static int node_probe(struct fw_unit *unit, const struct ieee1394_device_id *id)
name_len = fw_csr_string(unit->directory, CSR_MODEL,
name, sizeof(name));
+ if (name_len < 0)
+ return name_len;
+
for (i = ARRAY_SIZE(model_names); --i; )
if (strlen(model_names[i]) <= name_len &&
strncmp(name, model_names[i], name_len) == 0)
diff --git a/drivers/media/pci/cx18/cx18-driver.c b/drivers/media/pci/cx18/cx18-driver.c
index 8f314ca320c7..0c389a3fb4e5 100644
--- a/drivers/media/pci/cx18/cx18-driver.c
+++ b/drivers/media/pci/cx18/cx18-driver.c
@@ -1134,8 +1134,6 @@ static int cx18_probe(struct pci_dev *pci_dev,
free_workqueues:
destroy_workqueue(cx->in_work_queue);
err:
- if (retval == 0)
- retval = -ENODEV;
CX18_ERR("Error %d on initialization\n", retval);
v4l2_device_unregister(&cx->v4l2_dev);
diff --git a/drivers/regulator/vctrl-regulator.c b/drivers/regulator/vctrl-regulator.c
index 78de002037c7..044e5a5ca163 100644
--- a/drivers/regulator/vctrl-regulator.c
+++ b/drivers/regulator/vctrl-regulator.c
@@ -340,7 +340,7 @@ static int vctrl_init_vtable(struct platform_device *pdev)
}
}
- if (rdesc->n_voltages == 0) {
+ if (rdesc->n_voltages <= 0) {
dev_err(&pdev->dev, "invalid configuration\n");
return -EINVAL;
}
--
2.17.0
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] [media] cx18: remove redundant zero check on retval
2018-06-11 15:10 [PATCH] [media] cx18: remove redundant zero check on retval Colin King
@ 2018-06-12 9:07 ` Dan Carpenter
2018-06-12 9:12 ` Colin Ian King
0 siblings, 1 reply; 3+ messages in thread
From: Dan Carpenter @ 2018-06-12 9:07 UTC (permalink / raw)
To: Colin King
Cc: Stefan Richter, Mauro Carvalho Chehab, Andy Walls, Liam Girdwood,
Mark Brown, linux-media, linux1394-devel, kernel-janitors,
linux-kernel
You accidentally committed several changes...
regards,
dan carpenter
On Mon, Jun 11, 2018 at 04:10:45PM +0100, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
>
> The check for a zero retval is redundant as all paths that lead to
> this point have set retval to an error return value that is non-zero.
> Remove the redundant check.
>
> Detected by CoverityScan, CID#102589 ("Logically dead code")
>
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---
> drivers/media/firewire/firedtv-fw.c | 3 +++
> drivers/media/pci/cx18/cx18-driver.c | 2 --
> drivers/regulator/vctrl-regulator.c | 2 +-
> 3 files changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/media/firewire/firedtv-fw.c b/drivers/media/firewire/firedtv-fw.c
> index 92f4112d2e37..eed55be21836 100644
> --- a/drivers/media/firewire/firedtv-fw.c
> +++ b/drivers/media/firewire/firedtv-fw.c
> @@ -271,6 +271,9 @@ static int node_probe(struct fw_unit *unit, const struct ieee1394_device_id *id)
>
> name_len = fw_csr_string(unit->directory, CSR_MODEL,
> name, sizeof(name));
> + if (name_len < 0)
> + return name_len;
> +
> for (i = ARRAY_SIZE(model_names); --i; )
> if (strlen(model_names[i]) <= name_len &&
> strncmp(name, model_names[i], name_len) == 0)
> diff --git a/drivers/media/pci/cx18/cx18-driver.c b/drivers/media/pci/cx18/cx18-driver.c
> index 8f314ca320c7..0c389a3fb4e5 100644
> --- a/drivers/media/pci/cx18/cx18-driver.c
> +++ b/drivers/media/pci/cx18/cx18-driver.c
> @@ -1134,8 +1134,6 @@ static int cx18_probe(struct pci_dev *pci_dev,
> free_workqueues:
> destroy_workqueue(cx->in_work_queue);
> err:
> - if (retval == 0)
> - retval = -ENODEV;
> CX18_ERR("Error %d on initialization\n", retval);
>
> v4l2_device_unregister(&cx->v4l2_dev);
> diff --git a/drivers/regulator/vctrl-regulator.c b/drivers/regulator/vctrl-regulator.c
> index 78de002037c7..044e5a5ca163 100644
> --- a/drivers/regulator/vctrl-regulator.c
> +++ b/drivers/regulator/vctrl-regulator.c
> @@ -340,7 +340,7 @@ static int vctrl_init_vtable(struct platform_device *pdev)
> }
> }
>
> - if (rdesc->n_voltages == 0) {
> + if (rdesc->n_voltages <= 0) {
> dev_err(&pdev->dev, "invalid configuration\n");
> return -EINVAL;
> }
> --
> 2.17.0
>
> --
> To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] [media] cx18: remove redundant zero check on retval
2018-06-12 9:07 ` Dan Carpenter
@ 2018-06-12 9:12 ` Colin Ian King
0 siblings, 0 replies; 3+ messages in thread
From: Colin Ian King @ 2018-06-12 9:12 UTC (permalink / raw)
To: Dan Carpenter
Cc: Stefan Richter, Mauro Carvalho Chehab, Andy Walls, Liam Girdwood,
Mark Brown, linux-media, linux1394-devel, kernel-janitors,
linux-kernel
On 12/06/18 10:07, Dan Carpenter wrote:
> You accidentally committed several changes...
Sheesh, I was on some strong pain killers yesterday for a slipped disc,
I think they are impacting on my ability to think straight.
Colin
>
> regards,
> dan carpenter
>
> On Mon, Jun 11, 2018 at 04:10:45PM +0100, Colin King wrote:
>> From: Colin Ian King <colin.king@canonical.com>
>>
>> The check for a zero retval is redundant as all paths that lead to
>> this point have set retval to an error return value that is non-zero.
>> Remove the redundant check.
>>
>> Detected by CoverityScan, CID#102589 ("Logically dead code")
>>
>> Signed-off-by: Colin Ian King <colin.king@canonical.com>
>> ---
>> drivers/media/firewire/firedtv-fw.c | 3 +++
>> drivers/media/pci/cx18/cx18-driver.c | 2 --
>> drivers/regulator/vctrl-regulator.c | 2 +-
>> 3 files changed, 4 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/media/firewire/firedtv-fw.c b/drivers/media/firewire/firedtv-fw.c
>> index 92f4112d2e37..eed55be21836 100644
>> --- a/drivers/media/firewire/firedtv-fw.c
>> +++ b/drivers/media/firewire/firedtv-fw.c
>> @@ -271,6 +271,9 @@ static int node_probe(struct fw_unit *unit, const struct ieee1394_device_id *id)
>>
>> name_len = fw_csr_string(unit->directory, CSR_MODEL,
>> name, sizeof(name));
>> + if (name_len < 0)
>> + return name_len;
>> +
>> for (i = ARRAY_SIZE(model_names); --i; )
>> if (strlen(model_names[i]) <= name_len &&
>> strncmp(name, model_names[i], name_len) == 0)
>> diff --git a/drivers/media/pci/cx18/cx18-driver.c b/drivers/media/pci/cx18/cx18-driver.c
>> index 8f314ca320c7..0c389a3fb4e5 100644
>> --- a/drivers/media/pci/cx18/cx18-driver.c
>> +++ b/drivers/media/pci/cx18/cx18-driver.c
>> @@ -1134,8 +1134,6 @@ static int cx18_probe(struct pci_dev *pci_dev,
>> free_workqueues:
>> destroy_workqueue(cx->in_work_queue);
>> err:
>> - if (retval == 0)
>> - retval = -ENODEV;
>> CX18_ERR("Error %d on initialization\n", retval);
>>
>> v4l2_device_unregister(&cx->v4l2_dev);
>> diff --git a/drivers/regulator/vctrl-regulator.c b/drivers/regulator/vctrl-regulator.c
>> index 78de002037c7..044e5a5ca163 100644
>> --- a/drivers/regulator/vctrl-regulator.c
>> +++ b/drivers/regulator/vctrl-regulator.c
>> @@ -340,7 +340,7 @@ static int vctrl_init_vtable(struct platform_device *pdev)
>> }
>> }
>>
>> - if (rdesc->n_voltages == 0) {
>> + if (rdesc->n_voltages <= 0) {
>> dev_err(&pdev->dev, "invalid configuration\n");
>> return -EINVAL;
>> }
>> --
>> 2.17.0
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at http://vger.kernel.org/majordomo-info.html
> --
> To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2018-06-11 15:10 [PATCH] [media] cx18: remove redundant zero check on retval Colin King
2018-06-12 9:07 ` Dan Carpenter
2018-06-12 9:12 ` Colin Ian King
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