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Tue, 10 Mar 2026 01:48:14 -0700 (PDT) Received: from localhost.localdomain ([2804:d59:7f1c:1e00:6632:a8ff:fea4:c8d3]) by smtp.gmail.com with ESMTPSA id 71dfb90a1353d-56b09b6ac44sm10831811e0c.19.2026.03.10.01.48.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 10 Mar 2026 01:48:13 -0700 (PDT) From: Gustavo Arantes To: gregkh@linuxfoundation.org Cc: linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org, Gustavo Arantes Subject: [PATCH] staging: rtl8723bs: convert mutex_lock/unlock to guard and scoped_guard in rtw_pwrctrl.c Date: Tue, 10 Mar 2026 05:48:06 -0300 Message-ID: <20260310084806.34265-1-dev.gustavoa@gmail.com> X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Replace simple mutex_lock()/mutex_unlock() pairs with guard(mutex)() and scoped_guard(mutex, ...) in rtw_pwrctrl.c, simplifying the locking by using cleanup.h guard API which automatically releases the mutex when the variable goes out of scope, reducing risks of missing unlocks on error paths. Signed-off-by: Gustavo Arantes --- drivers/staging/rtl8723bs/core/rtw_pwrctrl.c | 27 ++++++++------------ 1 file changed, 10 insertions(+), 17 deletions(-) diff --git a/drivers/staging/rtl8723bs/core/rtw_pwrctrl.c b/drivers/staging/rtl8723bs/core/rtw_pwrctrl.c index f074ea6e0f38..d9b7956f6189 100644 --- a/drivers/staging/rtl8723bs/core/rtw_pwrctrl.c +++ b/drivers/staging/rtl8723bs/core/rtw_pwrctrl.c @@ -7,6 +7,7 @@ #include #include #include +#include void _ips_enter(struct adapter *padapter) { @@ -37,9 +38,8 @@ void ips_enter(struct adapter *padapter) hal_btcoex_IpsNotify(padapter, pwrpriv->ips_mode_req); - mutex_lock(&pwrpriv->lock); + guard(mutex)(&pwrpriv->lock); _ips_enter(padapter); - mutex_unlock(&pwrpriv->lock); } int _ips_leave(struct adapter *padapter) @@ -69,9 +69,8 @@ int ips_leave(struct adapter *padapter) struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter); int ret; - mutex_lock(&pwrpriv->lock); - ret = _ips_leave(padapter); - mutex_unlock(&pwrpriv->lock); + scoped_guard(mutex, &pwrpriv->lock) + ret = _ips_leave(padapter); if (ret == _SUCCESS) hal_btcoex_IpsNotify(padapter, IPS_NONE); @@ -138,9 +137,8 @@ void rtw_ps_processor(struct adapter *padapter) struct pwrctrl_priv *pwrpriv = adapter_to_pwrctl(padapter); u32 ps_deny = 0; - mutex_lock(&adapter_to_pwrctl(padapter)->lock); - ps_deny = rtw_ps_deny_get(padapter); - mutex_unlock(&adapter_to_pwrctl(padapter)->lock); + scoped_guard(mutex, &adapter_to_pwrctl(padapter)->lock) + ps_deny = rtw_ps_deny_get(padapter); if (ps_deny != 0) goto exit; @@ -494,11 +492,8 @@ void LeaveAllPowerSaveModeDirect(struct adapter *Adapter) if (pwrpriv->pwr_mode == PS_MODE_ACTIVE) return; - mutex_lock(&pwrpriv->lock); - - rtw_set_rpwm(Adapter, PS_STATE_S4); - - mutex_unlock(&pwrpriv->lock); + scoped_guard(mutex, &pwrpriv->lock) + rtw_set_rpwm(Adapter, PS_STATE_S4); rtw_lps_ctrl_wk_cmd(pri_padapter, LPS_CTRL_LEAVE, 0); } else { @@ -1114,9 +1109,8 @@ void rtw_ps_deny(struct adapter *padapter, enum ps_deny_reason reason) pwrpriv = adapter_to_pwrctl(padapter); - mutex_lock(&pwrpriv->lock); + guard(mutex)(&pwrpriv->lock); pwrpriv->ps_deny |= BIT(reason); - mutex_unlock(&pwrpriv->lock); } /* @@ -1129,9 +1123,8 @@ void rtw_ps_deny_cancel(struct adapter *padapter, enum ps_deny_reason reason) pwrpriv = adapter_to_pwrctl(padapter); - mutex_lock(&pwrpriv->lock); + guard(mutex)(&pwrpriv->lock); pwrpriv->ps_deny &= ~BIT(reason); - mutex_unlock(&pwrpriv->lock); } /* -- 2.53.0