[PATCH v4 0/7] staging: r8188eu: fix warnings reported by checkpatch

[PATCH v4 0/7] staging: r8188eu: fix warnings reported by checkpatch

[Jaehee Park]

These patches address style issues found by checkpatch in the
core/rtw_mlme.c file. 

Jaehee Park (7):
  staging: r8188eu: remove unnecessary braces in single statement block
  staging: r8188eu: remove spaces before tabs
  staging: r8188eu: remove 'added by' author comments
  staging: r8188eu: place constants on the right side of tests
  staging: r8188eu: replace spaces with tabs
  staging: r8188eu: correct typo in comments
  staging: r8188eu: remove unused else condition

 drivers/staging/r8188eu/core/rtw_mlme.c | 45 +++++++++++--------------
 1 file changed, 19 insertions(+), 26 deletions(-)

-- 
2.25.1

[PATCH v4 1/7] staging: r8188eu: remove unnecessary braces in single statement block

[Jaehee Park]

Remove braces for single statement block to minimize the number of
empty lines, without loss of readability. Issue found with checkpatch.
WARNING: braces {} are not necessary for single statement blocks

Signed-off-by: Jaehee Park <jhpark1013@gmail.com>
---
 drivers/staging/r8188eu/core/rtw_mlme.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/staging/r8188eu/core/rtw_mlme.c b/drivers/staging/r8188eu/core/rtw_mlme.c
index 3e9882f89f76..d3f4d7cdfa08 100644
--- a/drivers/staging/r8188eu/core/rtw_mlme.c
+++ b/drivers/staging/r8188eu/core/rtw_mlme.c
@@ -112,9 +112,8 @@ void _rtw_free_mlme_priv(struct mlme_priv *pmlmepriv)
 
 	rtw_free_mlme_priv_ie_data(pmlmepriv);
 
-	if (pmlmepriv) {
+	if (pmlmepriv)
 		vfree(pmlmepriv->free_bss_buf);
-	}
 
 }
 
-- 
2.25.1

Re: [PATCH v4 1/7] staging: r8188eu: remove unnecessary braces in single statement block

[Fabio M. De Francesco]

On giovedì 21 aprile 2022 21:20:26 CEST Jaehee Park wrote:
> Remove braces for single statement block to minimize the number of
> empty lines, without loss of readability. Issue found with checkpatch.
> WARNING: braces {} are not necessary for single statement blocks
> 
> Signed-off-by: Jaehee Park <jhpark1013@gmail.com>
> ---
>  drivers/staging/r8188eu/core/rtw_mlme.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/staging/r8188eu/core/rtw_mlme.c b/drivers/staging/
r8188eu/core/rtw_mlme.c
> index 3e9882f89f76..d3f4d7cdfa08 100644
> --- a/drivers/staging/r8188eu/core/rtw_mlme.c
> +++ b/drivers/staging/r8188eu/core/rtw_mlme.c
> @@ -112,9 +112,8 @@ void _rtw_free_mlme_priv(struct mlme_priv *pmlmepriv)
>  
>  	rtw_free_mlme_priv_ie_data(pmlmepriv);
>  
> -	if (pmlmepriv) {
> +	if (pmlmepriv)
>  		vfree(pmlmepriv->free_bss_buf);
> -	}
>  
>  }
>  
> -- 
> 2.25.1
> 

Hi Jaehee,

If you just want to remove the braces, your patch is good.

But... Did you ask yourself why this code needs to test if "pmlmepriv" is 
valid before calling vfree() on it? Actually, the code doesn't need this 
test, it just needs to call "vfree(pmlmepriv)" unconditionally.

OK, I know that this is not directly related to your patch or any other 
that is explicitly made just for removing unnecessary braces... 

vfree() behaves as a no-op function on NULL pointers, therefore there is no 
need to test whether or not "pmlmepriv" is valid.

Thanks,

Fabio M. De Francesco

Re: [PATCH v4 1/7] staging: r8188eu: remove unnecessary braces in single statement block

[Fabio M. De Francesco]

On giovedì 21 aprile 2022 21:52:14 CEST Fabio M. De Francesco wrote:
> On giovedì 21 aprile 2022 21:20:26 CEST Jaehee Park wrote:
> > Remove braces for single statement block to minimize the number of
> > empty lines, without loss of readability. Issue found with checkpatch.
> > WARNING: braces {} are not necessary for single statement blocks
> > 
> > Signed-off-by: Jaehee Park <jhpark1013@gmail.com>
> > ---
> >  drivers/staging/r8188eu/core/rtw_mlme.c | 3 +--
> >  1 file changed, 1 insertion(+), 2 deletions(-)
> > 
> > diff --git a/drivers/staging/r8188eu/core/rtw_mlme.c b/drivers/staging/
> r8188eu/core/rtw_mlme.c
> > index 3e9882f89f76..d3f4d7cdfa08 100644
> > --- a/drivers/staging/r8188eu/core/rtw_mlme.c
> > +++ b/drivers/staging/r8188eu/core/rtw_mlme.c
> > @@ -112,9 +112,8 @@ void _rtw_free_mlme_priv(struct mlme_priv 
*pmlmepriv)
> >  
> >  	rtw_free_mlme_priv_ie_data(pmlmepriv);
> >  
> > -	if (pmlmepriv) {
> > +	if (pmlmepriv)
> >  		vfree(pmlmepriv->free_bss_buf);
> > -	}
> >  
> >  }
> >  
> > -- 
> > 2.25.1
> > 
> 
> Hi Jaehee,
> 
> If you just want to remove the braces, your patch is good.
> 
> But... Did you ask yourself why this code needs to test if "pmlmepriv" is 
> valid before calling vfree() on it? Actually, the code doesn't need this 
> test, it just needs to call "vfree(pmlmepriv)" unconditionally.

When copy-pasting I overlooked a couple of things... However the argument 
is the same: the code doesn't need that 'if' statement before vfree().

I wanted to write "[] it just needs to call "vfree(pmlmepriv-
>free_bss_buf)" unconditionally".

I apologize for not reading twice before sending my email too soon after 
writing and moving sentences around.

> OK, I know that this is not directly related to your patch or any other 
> that is explicitly made just for removing unnecessary braces... 

"pmlmepriv" is valid because we know it from the previous call to 
rtw_free_mlme_priv_ie_data(). Therefore the code can dereference 
"pmlmepriv".

Furthermore, even if "free_bss_buf" were NULL it wouldn't matter because 
"vfree(pmlmepriv->free_bss_buf)" would be a no-op.

Sorry if this inaccurate wording might have confused you about what I was 
trying to say.

Thanks,

Fabio 

[PATCH v4 2/7] staging: r8188eu: remove spaces before tabs

[Jaehee Park]

Delete spaces before tabs in the comments. Issue found with checkpatch.
WARNING: please, no space before tabs

Signed-off-by: Jaehee Park <jhpark1013@gmail.com>
---
 drivers/staging/r8188eu/core/rtw_mlme.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/staging/r8188eu/core/rtw_mlme.c b/drivers/staging/r8188eu/core/rtw_mlme.c
index d3f4d7cdfa08..2cfd8e8d74a4 100644
--- a/drivers/staging/r8188eu/core/rtw_mlme.c
+++ b/drivers/staging/r8188eu/core/rtw_mlme.c
@@ -573,8 +573,8 @@ static void rtw_add_network(struct adapter *adapter,
 
 /* select the desired network based on the capability of the (i)bss. */
 /*  check items:	(1) security */
-/* 			(2) network_type */
-/* 			(3) WMM */
+/*			(2) network_type */
+/*			(3) WMM */
 /*			(4) HT */
 /*			(5) others */
 static bool rtw_is_desired_network(struct adapter *adapter, struct wlan_network *pnetwork)
@@ -909,9 +909,9 @@ static struct sta_info *rtw_joinbss_update_stainfo(struct adapter *padapter, str
 			memset((u8 *)&psta->dot11txpn, 0, sizeof(union pn48));
 			memset((u8 *)&psta->dot11rxpn, 0, sizeof(union pn48));
 		}
-		/* 	Commented by Albert 2012/07/21 */
-		/* 	When doing the WPS, the wps_ie_len won't equal to 0 */
-		/* 	And the Wi-Fi driver shouldn't allow the data packet to be tramsmitted. */
+		/*	Commented by Albert 2012/07/21 */
+		/*	When doing the WPS, the wps_ie_len won't equal to 0 */
+		/*	And the Wi-Fi driver shouldn't allow the data packet to be tramsmitted. */
 		if (padapter->securitypriv.wps_ie_len != 0) {
 			psta->ieee8021x_blocked = true;
 			padapter->securitypriv.wps_ie_len = 0;
@@ -1634,8 +1634,8 @@ int rtw_restruct_wmm_ie(struct adapter *adapter, u8 *in_ie, u8 *out_ie, uint in_
 /*  */
 /*  Search by BSSID, */
 /*  Return Value: */
-/* 		-1		:if there is no pre-auth key in the  table */
-/* 		>= 0		:if there is pre-auth key, and   return the entry id */
+/*		-1		:if there is no pre-auth key in the  table */
+/*		>= 0		:if there is pre-auth key, and   return the entry id */
 /*  */
 /*  */
 
-- 
2.25.1

[PATCH v4 3/7] staging: r8188eu: remove 'added by' author comments

[Jaehee Park]

Author comments "Added by Albert" and "Added by Annie" are sprinkled
through the file. These comments are not useful and can be removed.

Suggested-by: Alison Schofield <alison.schofield@intel.com>
Signed-off-by: Jaehee Park <jhpark1013@gmail.com>
---
 drivers/staging/r8188eu/core/rtw_mlme.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/staging/r8188eu/core/rtw_mlme.c b/drivers/staging/r8188eu/core/rtw_mlme.c
index 2cfd8e8d74a4..5adef9b9108d 100644
--- a/drivers/staging/r8188eu/core/rtw_mlme.c
+++ b/drivers/staging/r8188eu/core/rtw_mlme.c
@@ -909,7 +909,6 @@ static struct sta_info *rtw_joinbss_update_stainfo(struct adapter *padapter, str
 			memset((u8 *)&psta->dot11txpn, 0, sizeof(union pn48));
 			memset((u8 *)&psta->dot11rxpn, 0, sizeof(union pn48));
 		}
-		/*	Commented by Albert 2012/07/21 */
 		/*	When doing the WPS, the wps_ie_len won't equal to 0 */
 		/*	And the Wi-Fi driver shouldn't allow the data packet to be tramsmitted. */
 		if (padapter->securitypriv.wps_ie_len != 0) {
@@ -1628,9 +1627,6 @@ int rtw_restruct_wmm_ie(struct adapter *adapter, u8 *in_ie, u8 *out_ie, uint in_
 	return ielength;
 }
 
-/*  */
-/*  Ported from 8185: IsInPreAuthKeyList(). (Renamed from SecIsInPreAuthKeyList(), 2006-10-13.) */
-/*  Added by Annie, 2006-05-07. */
 /*  */
 /*  Search by BSSID, */
 /*  Return Value: */
-- 
2.25.1

[PATCH v4 4/7] staging: r8188eu: place constants on the right side of tests

[Jaehee Park]

To comply with the linux coding style, place constants on the right
side of the test in comparisons. Issue found with checkpatch.
WARNING: Comparisons should place the constant on the right side of
the test.

Signed-off-by: Jaehee Park <jhpark1013@gmail.com>
---
 drivers/staging/r8188eu/core/rtw_mlme.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/r8188eu/core/rtw_mlme.c b/drivers/staging/r8188eu/core/rtw_mlme.c
index 5adef9b9108d..b943fb190e4c 100644
--- a/drivers/staging/r8188eu/core/rtw_mlme.c
+++ b/drivers/staging/r8188eu/core/rtw_mlme.c
@@ -721,7 +721,7 @@ void rtw_surveydone_event_callback(struct adapter	*adapter, u8 *pbuf)
 			set_fwstate(pmlmepriv, _FW_UNDER_LINKING);
 			pmlmepriv->to_join = false;
 			s_ret = rtw_select_and_join_from_scanned_queue(pmlmepriv);
-			if (_SUCCESS == s_ret) {
+			if (s_ret == _SUCCESS) {
 			     _set_timer(&pmlmepriv->assoc_timer, MAX_JOIN_TIMEOUT);
 			} else if (s_ret == 2) { /* there is no need to wait for join */
 				_clr_fwstate_(pmlmepriv, _FW_UNDER_LINKING);
@@ -729,7 +729,8 @@ void rtw_surveydone_event_callback(struct adapter	*adapter, u8 *pbuf)
 			} else {
 				if (rtw_to_roaming(adapter) != 0) {
 					if (--pmlmepriv->to_roaming == 0 ||
-					    _SUCCESS != rtw_sitesurvey_cmd(adapter, &pmlmepriv->assoc_ssid, 1, NULL, 0)) {
+					    rtw_sitesurvey_cmd(adapter, &pmlmepriv->assoc_ssid,
+							       1, NULL, 0) != _SUCCESS) {
 						rtw_set_roaming(adapter, 0);
 						rtw_free_assoc_resources(adapter, 1);
 						rtw_indicate_disconnect(adapter);
@@ -1970,7 +1971,7 @@ void rtw_issue_addbareq_cmd(struct adapter *padapter, struct xmit_frame *pxmitfr
 		issued = (phtpriv->agg_enable_bitmap >> priority) & 0x1;
 		issued |= (phtpriv->candidate_tid_bitmap >> priority) & 0x1;
 
-		if (0 == issued) {
+		if (issued == 0) {
 			psta->htpriv.candidate_tid_bitmap |= BIT((u8)priority);
 			rtw_addbareq_cmd(padapter, (u8)priority, pattrib->ra);
 		}
@@ -1997,19 +1998,19 @@ void _rtw_roaming(struct adapter *padapter, struct wlan_network *tgt_network)
 	else
 		pnetwork = &pmlmepriv->cur_network;
 
-	if (0 < rtw_to_roaming(padapter)) {
+	if (rtw_to_roaming(padapter) > 0) {
 		memcpy(&pmlmepriv->assoc_ssid, &pnetwork->network.Ssid, sizeof(struct ndis_802_11_ssid));
 
 		pmlmepriv->assoc_by_bssid = false;
 
 		while (1) {
 			do_join_r = rtw_do_join(padapter);
-			if (_SUCCESS == do_join_r) {
+			if (do_join_r == _SUCCESS) {
 				break;
 			} else {
 				pmlmepriv->to_roaming--;
 
-				if (0 < pmlmepriv->to_roaming) {
+				if (pmlmepriv->to_roaming > 0) {
 					continue;
 				} else {
 					rtw_indicate_disconnect(padapter);
-- 
2.25.1

[PATCH v4 5/7] staging: r8188eu: replace spaces with tabs

[Jaehee Park]

Use tabs instead of spaces. Issue found with checkpatch.
WARNING: suspect code indent for conditional statements

Signed-off-by: Jaehee Park <jhpark1013@gmail.com>
---
 drivers/staging/r8188eu/core/rtw_mlme.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/r8188eu/core/rtw_mlme.c b/drivers/staging/r8188eu/core/rtw_mlme.c
index b943fb190e4c..7a90fe826d1d 100644
--- a/drivers/staging/r8188eu/core/rtw_mlme.c
+++ b/drivers/staging/r8188eu/core/rtw_mlme.c
@@ -722,7 +722,7 @@ void rtw_surveydone_event_callback(struct adapter	*adapter, u8 *pbuf)
 			pmlmepriv->to_join = false;
 			s_ret = rtw_select_and_join_from_scanned_queue(pmlmepriv);
 			if (s_ret == _SUCCESS) {
-			     _set_timer(&pmlmepriv->assoc_timer, MAX_JOIN_TIMEOUT);
+				_set_timer(&pmlmepriv->assoc_timer, MAX_JOIN_TIMEOUT);
 			} else if (s_ret == 2) { /* there is no need to wait for join */
 				_clr_fwstate_(pmlmepriv, _FW_UNDER_LINKING);
 				rtw_indicate_connect(adapter);
-- 
2.25.1

[PATCH v4 6/7] staging: r8188eu: correct typo in comments

[Jaehee Park]

Correct misspellings in the comments. Issue found with checkpatch.

Signed-off-by: Jaehee Park <jhpark1013@gmail.com>
---
 drivers/staging/r8188eu/core/rtw_mlme.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/staging/r8188eu/core/rtw_mlme.c b/drivers/staging/r8188eu/core/rtw_mlme.c
index 7a90fe826d1d..d422ce87ba7c 100644
--- a/drivers/staging/r8188eu/core/rtw_mlme.c
+++ b/drivers/staging/r8188eu/core/rtw_mlme.c
@@ -192,7 +192,7 @@ void _rtw_free_network_nolock(struct	mlme_priv *pmlmepriv, struct wlan_network *
 /*
 	return the wlan_network with the matching addr
 
-	Shall be calle under atomic context... to avoid possible racing condition...
+	Shall be called under atomic context... to avoid possible racing condition...
 */
 struct wlan_network *_rtw_find_network(struct __queue *scanned_queue, u8 *addr)
 {
@@ -328,7 +328,7 @@ void rtw_free_network_queue(struct adapter *dev, u8 isfreeall)
 /*
 	return the wlan_network with the matching addr
 
-	Shall be calle under atomic context... to avoid possible racing condition...
+	Shall be called under atomic context... to avoid possible racing condition...
 */
 struct	wlan_network *rtw_find_network(struct __queue *scanned_queue, u8 *addr)
 {
@@ -911,7 +911,7 @@ static struct sta_info *rtw_joinbss_update_stainfo(struct adapter *padapter, str
 			memset((u8 *)&psta->dot11rxpn, 0, sizeof(union pn48));
 		}
 		/*	When doing the WPS, the wps_ie_len won't equal to 0 */
-		/*	And the Wi-Fi driver shouldn't allow the data packet to be tramsmitted. */
+		/*	And the Wi-Fi driver shouldn't allow the data packet to be transmitted. */
 		if (padapter->securitypriv.wps_ie_len != 0) {
 			psta->ieee8021x_blocked = true;
 			padapter->securitypriv.wps_ie_len = 0;
@@ -1305,7 +1305,7 @@ void rtw_stadel_event_callback(struct adapter *adapter, u8 *pbuf)
 }
 
 /*
-* _rtw_join_timeout_handler - Timeout/faliure handler for CMD JoinBss
+* _rtw_join_timeout_handler - Timeout/failure handler for CMD JoinBss
 * @adapter: pointer to struct adapter structure
 */
 void _rtw_join_timeout_handler (struct adapter *adapter)
@@ -1340,7 +1340,7 @@ void _rtw_join_timeout_handler (struct adapter *adapter)
 }
 
 /*
-* rtw_scan_timeout_handler - Timeout/Faliure handler for CMD SiteSurvey
+* rtw_scan_timeout_handler - Timeout/Failure handler for CMD SiteSurvey
 * @adapter: pointer to struct adapter structure
 */
 void rtw_scan_timeout_handler (struct adapter *adapter)
-- 
2.25.1

[PATCH v4 7/7] staging: r8188eu: remove unused else condition

[Jaehee Park]

s_ret cannot return '2' so this else condition is unused. Remove this
unnecessary else statement.

Suggested-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: Jaehee Park <jhpark1013@gmail.com>
---
 drivers/staging/r8188eu/core/rtw_mlme.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/staging/r8188eu/core/rtw_mlme.c b/drivers/staging/r8188eu/core/rtw_mlme.c
index d422ce87ba7c..29b8b101180b 100644
--- a/drivers/staging/r8188eu/core/rtw_mlme.c
+++ b/drivers/staging/r8188eu/core/rtw_mlme.c
@@ -723,9 +723,6 @@ void rtw_surveydone_event_callback(struct adapter	*adapter, u8 *pbuf)
 			s_ret = rtw_select_and_join_from_scanned_queue(pmlmepriv);
 			if (s_ret == _SUCCESS) {
 				_set_timer(&pmlmepriv->assoc_timer, MAX_JOIN_TIMEOUT);
-			} else if (s_ret == 2) { /* there is no need to wait for join */
-				_clr_fwstate_(pmlmepriv, _FW_UNDER_LINKING);
-				rtw_indicate_connect(adapter);
 			} else {
 				if (rtw_to_roaming(adapter) != 0) {
 					if (--pmlmepriv->to_roaming == 0 ||
-- 
2.25.1

Re: [PATCH v4 7/7] staging: r8188eu: remove unused else condition

[Greg KH]

On Thu, Apr 21, 2022 at 03:20:32PM -0400, Jaehee Park wrote:
> s_ret cannot return '2' so this else condition is unused. Remove this
> unnecessary else statement.

s_ret is not a function, it is a value.
rtw_select_and_join_from_scanned_queue() is the function here.

Can you fix up the wording in this changelog text and resubmit?

thanks,

greg k-h

Re: [PATCH v4 7/7] staging: r8188eu: remove unused else condition

[Jaehee]

On Fri, Apr 22, 2022 at 10:45 AM Greg KH <gregkh@linuxfoundation.org> wrote:
>
> On Thu, Apr 21, 2022 at 03:20:32PM -0400, Jaehee Park wrote:
> > s_ret cannot return '2' so this else condition is unused. Remove this
> > unnecessary else statement.
>
> s_ret is not a function, it is a value.
> rtw_select_and_join_from_scanned_queue() is the function here.
>
> Can you fix up the wording in this changelog text and resubmit?
>
> thanks,
>
> greg k-h

Sorry about the delay! I've sent the revised patch just now.
Thanks,
Jaehee