linux-kernel - Re: [PATCH] PCI: dwc: ep: Return -ENOMEM for allocation failures

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Message-ID: <20250313060303.66eqdf7ok5xpkokw@thinkpad>
Date: Thu, 13 Mar 2025 11:33:03 +0530
From: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To: Dan Carpenter <dan.carpenter@...aro.org>
Cc: Jingoo Han <jingoohan1@...il.com>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczyński <kw@...ux.com>,
	Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
	Vidya Sagar <vidyas@...dia.com>, Frank Li <Frank.Li@....com>,
	Niklas Cassel <cassel@...nel.org>, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] PCI: dwc: ep: Return -ENOMEM for allocation failures

On Wed, Mar 05, 2025 at 06:00:07PM +0300, Dan Carpenter wrote:
> If the bitmap allocations fail then dw_pcie_ep_init_registers() currently
> returns success.  Return -ENOMEM instead.
> 
> Fixes: 869bc5253406 ("PCI: dwc: ep: Fix DBI access failure for drivers requiring refclk from host")
> Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>

- Mani

> ---
>  drivers/pci/controller/dwc/pcie-designware-ep.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
> index 20f2436c7091..1b873d486b2d 100644
> --- a/drivers/pci/controller/dwc/pcie-designware-ep.c
> +++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
> @@ -908,6 +908,7 @@ int dw_pcie_ep_init_registers(struct dw_pcie_ep *ep)
>  	if (ret)
>  		return ret;
>  
> +	ret = -ENOMEM;
>  	if (!ep->ib_window_map) {
>  		ep->ib_window_map = devm_bitmap_zalloc(dev, pci->num_ib_windows,
>  						       GFP_KERNEL);
> -- 
> 2.47.2
> 

-- 
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