[PATCH] [media] cx18: remove redundant zero check on retval

From: Colin King
Date: Mon Jun 11 2018 - 11:10:57 EST


From: Colin Ian King <colin.king@xxxxxxxxxxxxx>

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@xxxxxxxxxxxxx>
---
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