linux-kernel - [Outreachy kernel] [PATCH v2] staging: rtl8723bs: Remove useless led_blink

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Date:   Wed, 14 Apr 2021 18:26:14 +0200
From:   "Fabio M. De Francesco" <fmdefrancesco@...il.com>
To:     outreachy-kernel@...glegroups.com,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Matthew Wilcox <willy@...radead.org>,
        Julia Lawall <julia.lawall@...ia.fr>,
        Dan Carpenter <dan.carpenter@...cle.com>
Cc:     "Fabio M. De Francesco" <fmdefrancesco@...il.com>
Subject: [Outreachy kernel] [PATCH v2] staging: rtl8723bs: Remove useless led_blink_hdl()

Removed useless led_blink_hdl() prototype and definition. In wlancmds[]
the slot #60 is now set to NULL using the macro GEN_MLME_EXT_HANDLER. This
change has not unwanted side effects because the code in rtw_cmd.c checks
if the function pointer is valid before using it.

Reported-by: Julia Lawall <julia.lawall@...ia.fr>
Suggested-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Fabio M. De Francesco <fmdefrancesco@...il.com>
---

Changes since v1: Corrected a bad solution to this issue that made use of
an unnecessary dummy function.

 drivers/staging/rtl8723bs/core/rtw_cmd.c         | 2 +-
 drivers/staging/rtl8723bs/core/rtw_mlme_ext.c    | 9 ---------
 drivers/staging/rtl8723bs/include/rtw_mlme_ext.h | 1 -
 3 files changed, 1 insertion(+), 11 deletions(-)

diff --git a/drivers/staging/rtl8723bs/core/rtw_cmd.c b/drivers/staging/rtl8723bs/core/rtw_cmd.c
index 0297fbad7bce..f82dbd4f4c3d 100644
--- a/drivers/staging/rtl8723bs/core/rtw_cmd.c
+++ b/drivers/staging/rtl8723bs/core/rtw_cmd.c
@@ -150,7 +150,7 @@ static struct cmd_hdl wlancmds[] = {
 
 	GEN_MLME_EXT_HANDLER(0, h2c_msg_hdl) /*58*/
 	GEN_MLME_EXT_HANDLER(sizeof(struct SetChannelPlan_param), set_chplan_hdl) /*59*/
-	GEN_MLME_EXT_HANDLER(sizeof(struct LedBlink_param), led_blink_hdl) /*60*/
+	GEN_MLME_EXT_HANDLER(0, NULL) /*60*/
 
 	GEN_MLME_EXT_HANDLER(sizeof(struct SetChannelSwitch_param), set_csa_hdl) /*61*/
 	GEN_MLME_EXT_HANDLER(sizeof(struct TDLSoption_param), tdls_hdl) /*62*/
diff --git a/drivers/staging/rtl8723bs/core/rtw_mlme_ext.c b/drivers/staging/rtl8723bs/core/rtw_mlme_ext.c
index 873d3792ac8e..963ea80083c8 100644
--- a/drivers/staging/rtl8723bs/core/rtw_mlme_ext.c
+++ b/drivers/staging/rtl8723bs/core/rtw_mlme_ext.c
@@ -6189,15 +6189,6 @@ u8 set_chplan_hdl(struct adapter *padapter, unsigned char *pbuf)
 	return	H2C_SUCCESS;
 }
 
-u8 led_blink_hdl(struct adapter *padapter, unsigned char *pbuf)
-{
-
-	if (!pbuf)
-		return H2C_PARAMETERS_ERROR;
-
-	return	H2C_SUCCESS;
-}
-
 u8 set_csa_hdl(struct adapter *padapter, unsigned char *pbuf)
 {
 	return	H2C_REJECTED;
diff --git a/drivers/staging/rtl8723bs/include/rtw_mlme_ext.h b/drivers/staging/rtl8723bs/include/rtw_mlme_ext.h
index 5e6cf63956b8..472818c5fd83 100644
--- a/drivers/staging/rtl8723bs/include/rtw_mlme_ext.h
+++ b/drivers/staging/rtl8723bs/include/rtw_mlme_ext.h
@@ -745,7 +745,6 @@ u8 chk_bmc_sleepq_hdl(struct adapter *padapter, unsigned char *pbuf);
 u8 tx_beacon_hdl(struct adapter *padapter, unsigned char *pbuf);
 u8 set_ch_hdl(struct adapter *padapter, u8 *pbuf);
 u8 set_chplan_hdl(struct adapter *padapter, unsigned char *pbuf);
-u8 led_blink_hdl(struct adapter *padapter, unsigned char *pbuf);
 u8 set_csa_hdl(struct adapter *padapter, unsigned char *pbuf);	/* Kurt: Handling DFS channel switch announcement ie. */
 u8 tdls_hdl(struct adapter *padapter, unsigned char *pbuf);
 u8 run_in_thread_hdl(struct adapter *padapter, u8 *pbuf);
-- 
2.31.1