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From:   Johan Hovold <johan+linaro@kernel.org>
To:     "Lorenzo Pieralisi" <lpieralisi@kernel.org>,
        =?UTF-8?q?Krzysztof=20Wilczy=C5=84ski?= <kw@linux.com>,
        "Bjorn Helgaas" <bhelgaas@google.com>
Cc:     Andy Gross <agross@kernel.org>,
        Bjorn Andersson <andersson@kernel.org>,
        Konrad Dybcio <konrad.dybcio@linaro.org>,
        Manivannan Sadhasivam <mani@kernel.org>,
        Rob Herring <robh@kernel.org>,
        Nirmal Patel <nirmal.patel@linux.intel.com>,
        Jonathan Derrick <jonathan.derrick@linux.dev>,
        linux-arm-msm@vger.kernel.org, linux-pci@vger.kernel.org,
        linux-kernel@vger.kernel.org,
        Johan Hovold <johan+linaro@kernel.org>,
        Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Subject: [PATCH v2 5/6] PCI/ASPM: Clean up disable link state parameter
Date:   Tue, 28 Nov 2023 09:15:11 +0100
Message-ID: <20231128081512.19387-6-johan+linaro@kernel.org>
In-Reply-To: <20231128081512.19387-1-johan+linaro@kernel.org>
References: <20231128081512.19387-1-johan+linaro@kernel.org>
MIME-Version: 1.0
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Precedence: bulk

Replace the current 'sem' parameter to the __pci_disable_link_state()
helper with a more descriptive 'locked' parameter, which indicates
whether a pci_bus_sem read lock is already held.

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 drivers/pci/pcie/aspm.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c
index 5eb462772354..d7a3ca555cc1 100644
--- a/drivers/pci/pcie/aspm.c
+++ b/drivers/pci/pcie/aspm.c
@@ -1041,7 +1041,7 @@ static struct pcie_link_state *pcie_aspm_get_link(struct pci_dev *pdev)
 	return bridge->link_state;
 }
 
-static int __pci_disable_link_state(struct pci_dev *pdev, int state, bool sem)
+static int __pci_disable_link_state(struct pci_dev *pdev, int state, bool locked)
 {
 	struct pcie_link_state *link = pcie_aspm_get_link(pdev);
 
@@ -1060,7 +1060,7 @@ static int __pci_disable_link_state(struct pci_dev *pdev, int state, bool sem)
 		return -EPERM;
 	}
 
-	if (sem)
+	if (!locked)
 		down_read(&pci_bus_sem);
 	mutex_lock(&aspm_lock);
 	if (state & PCIE_LINK_STATE_L0S)
@@ -1082,7 +1082,7 @@ static int __pci_disable_link_state(struct pci_dev *pdev, int state, bool sem)
 		link->clkpm_disable = 1;
 	pcie_set_clkpm(link, policy_to_clkpm_state(link));
 	mutex_unlock(&aspm_lock);
-	if (sem)
+	if (!locked)
 		up_read(&pci_bus_sem);
 
 	return 0;
@@ -1090,7 +1090,7 @@ static int __pci_disable_link_state(struct pci_dev *pdev, int state, bool sem)
 
 int pci_disable_link_state_locked(struct pci_dev *pdev, int state)
 {
-	return __pci_disable_link_state(pdev, state, false);
+	return __pci_disable_link_state(pdev, state, true);
 }
 EXPORT_SYMBOL(pci_disable_link_state_locked);
 
@@ -1105,7 +1105,7 @@ EXPORT_SYMBOL(pci_disable_link_state_locked);
  */
 int pci_disable_link_state(struct pci_dev *pdev, int state)
 {
-	return __pci_disable_link_state(pdev, state, true);
+	return __pci_disable_link_state(pdev, state, false);
 }
 EXPORT_SYMBOL(pci_disable_link_state);
 
-- 
2.41.0