linux-kernel - [PATCH v2 2/2] PCI: dwc: Cleanup in dw_pcie_ep_raise_msi

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Date: Fri, 19 Jan 2024 11:24:18 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Jingoo Han <jingoohan1@...il.com>
Cc: Gustavo Pimentel <gustavo.pimentel@...opsys.com>,
	Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczyński <kw@...ux.com>,
	Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: [PATCH v2 2/2] PCI: dwc: Cleanup in dw_pcie_ep_raise_msi_irq()

The alignment code in dw_pcie_ep_raise_msix_irq() and
dw_pcie_ep_raise_msi_irq() is quite similar.  I recently update the code
in the former, so tweak the latter to match as well for consistency sake.

Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>
---
v2: Add this new patch

I wrote two versions of this, one where both patches were folded
together and this one where the style tweaks are separated out into
their own patch.  This is the better version.

 drivers/pci/controller/dwc/pcie-designware-ep.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
index 2b6607c23541..ccfc21cd0bb0 100644
--- a/drivers/pci/controller/dwc/pcie-designware-ep.c
+++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
@@ -456,8 +456,8 @@ int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no,
 	u32 msg_addr_lower, msg_addr_upper, reg;
 	struct dw_pcie_ep_func *ep_func;
 	struct pci_epc *epc = ep->epc;
-	unsigned int aligned_offset;
 	u16 msg_ctrl, msg_data;
+	u64 aligned_offset;
 	bool has_upper;
 	u64 msg_addr;
 	int ret;
@@ -483,8 +483,8 @@ int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no,
 		msg_data = dw_pcie_ep_readw_dbi(ep, func_no, 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;
+	msg_addr &= ~aligned_offset;
 	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