[PATCH v5] staging: vt6656: add error code handling to unused variable

From: John B. Wyatt IV
Date: Mon Mar 30 2020 - 14:45:37 EST


Add error code handling to unused 'ret' variable that was never used.
Return an error code from functions called within vnt_radio_power_on.

Issue reported by coccinelle (coccicheck).

Suggested-by: Quentin Deslandes <quentin.deslandes@xxxxxxxxxxx>
Suggested-by: Stefano Brivio <sbrivio@xxxxxxxxxx>
Reviewed-by: Quentin Deslandes <quentin.deslandes@xxxxxxxxxxx>
Signed-off-by: John B. Wyatt IV <jbwyatt4@xxxxxxxxx>
---
v5: Remove Suggested-by: Julia Lawall above seperator line.
Remove break; statement in switch block.
break; removal checked by both gcc compile and checkpatch.
Suggested by Stefano Brivio <sbrivio@xxxxxxxxxx>

v4: Move Suggested-by: Julia Lawall above seperator line.
Add Reviewed-by tag as requested by Quentin Deslandes.

v3: Forgot to add v2 code changes to commit.

v2: Replace goto statements with return.
Remove last if check because it was unneeded.
Suggested-by: Julia Lawall <julia.lawall@xxxxxxxx>

drivers/staging/vt6656/card.c | 19 ++++++++++++-------
1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/drivers/staging/vt6656/card.c b/drivers/staging/vt6656/card.c
index dc3ab10eb630..27fc53accdfd 100644
--- a/drivers/staging/vt6656/card.c
+++ b/drivers/staging/vt6656/card.c
@@ -723,9 +723,13 @@ int vnt_radio_power_on(struct vnt_private *priv)
{
int ret = 0;

- vnt_exit_deep_sleep(priv);
+ ret = vnt_exit_deep_sleep(priv);
+ if (ret)
+ return ret;

- vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_RXON);
+ ret = vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_RXON);
+ if (ret)
+ return ret;

switch (priv->rf_type) {
case RF_AL2230:
@@ -734,14 +738,15 @@ int vnt_radio_power_on(struct vnt_private *priv)
case RF_VT3226:
case RF_VT3226D0:
case RF_VT3342A0:
- vnt_mac_reg_bits_on(priv, MAC_REG_SOFTPWRCTL,
- (SOFTPWRCTL_SWPE2 | SOFTPWRCTL_SWPE3));
+ ret = vnt_mac_reg_bits_on(priv, MAC_REG_SOFTPWRCTL,
+ (SOFTPWRCTL_SWPE2 |
+ SOFTPWRCTL_SWPE3));
break;
}
+ if (ret)
+ return ret;

- vnt_mac_reg_bits_off(priv, MAC_REG_GPIOCTL1, GPIO3_INTMD);
-
- return ret;
+ return vnt_mac_reg_bits_off(priv, MAC_REG_GPIOCTL1, GPIO3_INTMD);
}

void vnt_set_bss_mode(struct vnt_private *priv)
--
2.25.1