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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: "Dan Carpenter" <dan.carpenter@linaro.org>,
	"Bjorn Helgaas" <bhelgaas@google.com>,
	"Niklas Cassel" <cassel@kernel.org>,
	"Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>,
	"Manivannan Sadhasivam" <manivannan.sadhasivam@linaro.org>,
	"Sasha Levin" <sashal@kernel.org>,
	jingoohan1@gmail.com, gustavo.pimentel@synopsys.com,
	lpieralisi@kernel.org, kw@linux.com, linux-pci@vger.kernel.org
Subject: [PATCH AUTOSEL 6.6 42/51] PCI: dwc: Clean up dw_pcie_ep_raise_msi_irq() alignment
Date: Mon, 12 Feb 2024 19:20:19 -0500	[thread overview]
Message-ID: <20240213002052.670571-42-sashal@kernel.org> (raw)
In-Reply-To: <20240213002052.670571-1-sashal@kernel.org>

From: Dan Carpenter <dan.carpenter@linaro.org>

[ Upstream commit 67057f48df79a3d73683385f521215146861684b ]

I recently changed the alignment code in dw_pcie_ep_raise_msix_irq().  The
code in dw_pcie_ep_raise_msi_irq() is similar, so update it to match, just
for consistency.  (No effect on runtime, just a cleanup).

Link: https://lore.kernel.org/r/184097e0-c728-42c7-9e8a-556bd33fb612@moroto.mountain
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/pci/controller/dwc/pcie-designware-ep.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
index 8d79dd0e1d60..51f340663260 100644
--- a/drivers/pci/controller/dwc/pcie-designware-ep.c
+++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
@@ -526,9 +526,10 @@ int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no,
 		reg = ep_func->msi_cap + func_offset + PCI_MSI_DATA_32;
 		msg_data = dw_pcie_readw_dbi(pci, reg);
 	}
-	aligned_offset = msg_addr_lower & (epc->mem->window.page_size - 1);
-	msg_addr = ((u64)msg_addr_upper) << 32 |
-			(msg_addr_lower & ~aligned_offset);
+	msg_addr = ((u64)msg_addr_upper) << 32 | msg_addr_lower;
+
+	aligned_offset = msg_addr & (epc->mem->window.page_size - 1);
+	msg_addr = ALIGN_DOWN(msg_addr, epc->mem->window.page_size);
 	ret = dw_pcie_ep_map_addr(epc, func_no, 0, ep->msi_mem_phys, msg_addr,
 				  epc->mem->window.page_size);
 	if (ret)
-- 
2.43.0


           reply	other threads:[~2024-02-13  0:21 UTC|newest]

Thread overview: expand[flat|nested]  mbox.gz  Atom feed
 [parent not found: <20240213002052.670571-1-sashal@kernel.org>]

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