[PATCH v5 1/4] staging: rtl8192e: Remove unused rf_set_sens variable

Yogesh Hegde
2023-04-24T18:04:12Z

The rf_set_sens variable is declared but never set, so it is always NULL.
This commit cleans up the unused rf_set_sens variable and removes the
associated code that relied on it.

Specifically, the following changes have been made:
- Removed the `range->sensitivity` assignment, which was never used.
- Removed the sensitivity level get implementation, which always returns
an error code.
- Removed the sensitivity level set implementation, which always returns
an error code.
- Removed the `rf_set_sens` variable.

Suggested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Signed-off-by: Yogesh Hegde <yogi.kernel@gmail.com>
---

Changes in v5:
1. Rebased onto latest staging-testing branch

Changes in v4:
1. Split changes into patch series per feedback from
gregkh@linuxfoundation.org

Changes in v3:
1. Fixed description to fit within 75 chars
2. Added suggested tags
per feedback from philipp.g.hortmann@gmail.com

Changes in v2:
1. Removed function definition rf_set_sens
2. Removed usage of variable priv->rf_set_sens
3. Removed functions _rtl92e_wx_get_sens and _rtl92e_wx_set_sens
4. Cleaned up the variables sens and max_sens used in these functions

Changes in v1:
1. Fix comparison to NULL of variable rf_set_sens
---
drivers/staging/rtl8192e/rtl8192e/rtl_core.h | 1 -
drivers/staging/rtl8192e/rtl8192e/rtl_wx.c | 19 ++-----------------
2 files changed, 2 insertions(+), 18 deletions(-)

diff --git a/drivers/staging/rtl8192e/rtl8192e/rtl_core.h b/drivers/staging/rtl8192e/rtl8192e/rtl_core.h
index 285dac32c074..08145e1f814c 100644
--- a/drivers/staging/rtl8192e/rtl8192e/rtl_core.h
+++ b/drivers/staging/rtl8192e/rtl8192e/rtl_core.h
@@ -231,7 +231,6 @@ struct r8192_priv {
struct rt_stats stats;
struct iw_statistics wstats;

- short (*rf_set_sens)(struct net_device *dev, short sens);
u8 (*rf_set_chan)(struct net_device *dev, u8 ch);

struct rx_desc *rx_ring[MAX_RX_QUEUE];
diff --git a/drivers/staging/rtl8192e/rtl8192e/rtl_wx.c b/drivers/staging/rtl8192e/rtl8192e/rtl_wx.c
index cb28288a618b..cc1af367f37d 100644
--- a/drivers/staging/rtl8192e/rtl8192e/rtl_wx.c
+++ b/drivers/staging/rtl8192e/rtl8192e/rtl_wx.c
@@ -311,10 +311,6 @@ static int _rtl92e_wx_get_range(struct net_device *dev,
/* ~130 Mb/s real (802.11n) */
range->throughput = 130 * 1000 * 1000;

- if (priv->rf_set_sens != NULL)
- /* signal level threshold range */
- range->sensitivity = priv->max_sens;
-
range->max_qual.qual = 100;
range->max_qual.level = 0;
range->max_qual.noise = 0;
@@ -813,10 +809,7 @@ static int _rtl92e_wx_get_sens(struct net_device *dev,
{
struct r8192_priv *priv = rtllib_priv(dev);

- if (priv->rf_set_sens == NULL)
- return -1; /* we have not this support for this radio */
- wrqu->sens.value = priv->sens;
- return 0;
+ return -1;
}

static int _rtl92e_wx_set_sens(struct net_device *dev,
@@ -831,15 +824,7 @@ static int _rtl92e_wx_set_sens(struct net_device *dev,
return 0;

mutex_lock(&priv->wx_mutex);
- if (priv->rf_set_sens == NULL) {
- err = -1; /* we have not this support for this radio */
- goto exit;
- }
- if (priv->rf_set_sens(dev, wrqu->sens.value) == 0)
- priv->sens = wrqu->sens.value;
- else
- err = -EINVAL;
-
+ err = -1;
exit:
mutex_unlock(&priv->wx_mutex);

--
2.34.1