[PATCH 2/7] PCI: xilinx-nwl: Fix off-by-one

From: Sean Anderson <sean.anderson@linux.dev>
To: "Lorenzo Pieralisi" <lpieralisi@kernel.org>,
	"Krzysztof Wilczyński" <kw@linux.com>,
	"Rob Herring" <robh@kernel.org>,
	linux-pci@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	Thippeswamy Havalige <thippeswamy.havalige@amd.com>,
	Michal Simek <michal.simek@amd.com>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Sean Anderson <sean.anderson@linux.dev>,
	stable@vger.kernel.org, Bharat Kumar Gogada <bharatku@xilinx.com>
Subject: [PATCH 2/7] PCI: xilinx-nwl: Fix off-by-one
Date: Mon, 22 Apr 2024 15:58:59 -0400	[thread overview]
Message-ID: <20240422195904.3591683-3-sean.anderson@linux.dev> (raw)
In-Reply-To: <20240422195904.3591683-1-sean.anderson@linux.dev>

IRQs start at 0, so we don't need to subtract 1.

Fixes: 9a181e1093af ("PCI: xilinx-nwl: Modify IRQ chip for legacy interrupts")
Cc: <stable@vger.kernel.org>
Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
---

 drivers/pci/controller/pcie-xilinx-nwl.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/controller/pcie-xilinx-nwl.c b/drivers/pci/controller/pcie-xilinx-nwl.c
index 0408f4d612b5..437927e3bcca 100644
--- a/drivers/pci/controller/pcie-xilinx-nwl.c
+++ b/drivers/pci/controller/pcie-xilinx-nwl.c
@@ -371,7 +371,7 @@ static void nwl_mask_intx_irq(struct irq_data *data)
 	u32 mask;
 	u32 val;
 
-	mask = 1 << (data->hwirq - 1);
+	mask = 1 << data->hwirq;
 	raw_spin_lock_irqsave(&pcie->leg_mask_lock, flags);
 	val = nwl_bridge_readl(pcie, MSGF_LEG_MASK);
 	nwl_bridge_writel(pcie, (val & (~mask)), MSGF_LEG_MASK);
@@ -385,7 +385,7 @@ static void nwl_unmask_intx_irq(struct irq_data *data)
 	u32 mask;
 	u32 val;
 
-	mask = 1 << (data->hwirq - 1);
+	mask = 1 << data->hwirq;
 	raw_spin_lock_irqsave(&pcie->leg_mask_lock, flags);
 	val = nwl_bridge_readl(pcie, MSGF_LEG_MASK);
 	nwl_bridge_writel(pcie, (val | mask), MSGF_LEG_MASK);
-- 
2.35.1.1320.gc452695387.dirty

