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Date: Thu, 4 Apr 2024 09:21:50 +0200
From: Johan Hovold <johan@...nel.org>
To: Krishna Kurapati <quic_kriskura@...cinc.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Rob Herring <robh@...nel.org>,
Bjorn Andersson <andersson@...nel.org>,
Wesley Cheng <quic_wcheng@...cinc.com>,
Konrad Dybcio <konrad.dybcio@...aro.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Conor Dooley <conor+dt@...nel.org>,
Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
Felipe Balbi <balbi@...nel.org>, devicetree@...r.kernel.org,
linux-arm-msm@...r.kernel.org, linux-usb@...r.kernel.org,
linux-kernel@...r.kernel.org, quic_ppratap@...cinc.com,
quic_jackp@...cinc.com, Johan Hovold <johan+linaro@...nel.org>
Subject: Re: [PATCH v19 2/9] usb: dwc3: core: Access XHCI address space
temporarily to read port info
On Thu, Apr 04, 2024 at 10:42:22AM +0530, Krishna Kurapati wrote:
> +static int dwc3_get_num_ports(struct dwc3 *dwc)
> +{
> + void __iomem *base;
> + u8 major_revision;
> + u32 offset;
> + u32 val;
> +
> + /*
> + * Remap xHCI address space to access XHCI ext cap regs since it is
> + * needed to get information on number of ports present.
> + */
> + base = ioremap(dwc->xhci_resources[0].start,
> + resource_size(&dwc->xhci_resources[0]));
> + if (!base)
> + return PTR_ERR(base);
This is obviously still broken. You need to update the return value as
well.
Fix in v20.
Johan
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