linux-kernel - [PATCH AUTOSEL 6.7 49/58] PCI: dwc: Clean up dw_pcie_ep_raise_msi

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Date: Mon, 12 Feb 2024 19:17:55 -0500
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Dan Carpenter <dan.carpenter@...aro.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Niklas Cassel <cassel@...nel.org>,
	Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
	Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
	Sasha Levin <sashal@...nel.org>,
	jingoohan1@...il.com,
	gustavo.pimentel@...opsys.com,
	lpieralisi@...nel.org,
	kw@...ux.com,
	linux-pci@...r.kernel.org
Subject: [PATCH AUTOSEL 6.7 49/58] PCI: dwc: Clean up dw_pcie_ep_raise_msi_irq() alignment

From: Dan Carpenter <dan.carpenter@...aro.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@...aro.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>
Reviewed-by: Niklas Cassel <cassel@...nel.org>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Signed-off-by: Sasha Levin <sashal@...nel.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 bc94d7f39535..6d1cd4fc3d1e 100644
--- a/drivers/pci/controller/dwc/pcie-designware-ep.c
+++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
@@ -543,9 +543,10 @@ 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