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Date: Wed, 24 Jan 2024 17:42:14 +0200 (EET)
From: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To: Dan Carpenter <dan.carpenter@...aro.org>
cc: Jingoo Han <jingoohan1@...il.com>, 
    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: Re: [PATCH v4 2/2] PCI: dwc: Cleanup in dw_pcie_ep_raise_msi_irq()

On Wed, 24 Jan 2024, Dan Carpenter wrote:

> 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
> as well, just for consistency.  (No effect on runtime, just a cleanup).
> 
> Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>
> ---
> v4: style improvements
> v3: use ALIGN_DOWN()
> v2: new patch
> 
>  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 51679c6702cf..d2de41f02a77 100644
> --- a/drivers/pci/controller/dwc/pcie-designware-ep.c
> +++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
> @@ -482,9 +482,10 @@ int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no,
>  		reg = ep_func->msi_cap + PCI_MSI_DATA_32;
>  		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;
> +
> +	aligned_offset = msg_addr & (epc->mem->window.page_size - 1);
> +	msg_addr = ALIGN_DOWN(msg_addr, epc->mem->window.page_size);

After you've added the #include in 1/2, for both patches:

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>


-- 
 i.

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