linux-kernel - Re: [PATCH v2 2/8] IB/hfi1: Convert PCIBIOS

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Date:   Mon, 29 Jun 2020 16:09:21 -0400
From:   Dennis Dalessandro <dennis.dalessandro@...el.com>
To:     refactormyself@...il.com, helgaas@...nel.org
Cc:     bjorn@...gaas.com, linux-pci@...r.kernel.org,
        skhan@...uxfoundation.org,
        Mike Marciniszyn <mike.marciniszyn@...el.com>,
        Doug Ledford <dledford@...hat.com>,
        Jason Gunthorpe <jgg@...pe.ca>, linux-rdma@...r.kernel.org,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/8] IB/hfi1: Convert PCIBIOS_* errors to generic -E*
 errors

On 6/15/2020 3:32 AM, refactormyself@...il.com wrote:
> From: Bolarinwa Olayemi Saheed <refactormyself@...il.com>
> 
> pcie_speeds() returns PCIBIOS_ error codes from PCIe capability accessors.
> 
> PCIBIOS_ error codes have positive values. Passing on these values is
> inconsistent with functions which return only a negative value on failure.
> 
> Before passing on the return value of PCIe capability accessors, call
> pcibios_err_to_errno() to convert any positive PCIBIOS_ error codes to
> negative generic error values.
> 
> Suggested-by: Bjorn Helgaas <bjorn@...gaas.com>
> Signed-off-by: Bolarinwa Olayemi Saheed <refactormyself@...il.com>
> ---
>   drivers/infiniband/hw/hfi1/pcie.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/infiniband/hw/hfi1/pcie.c b/drivers/infiniband/hw/hfi1/pcie.c
> index 1a6268d61977..eb53781d0c6a 100644
> --- a/drivers/infiniband/hw/hfi1/pcie.c
> +++ b/drivers/infiniband/hw/hfi1/pcie.c
> @@ -306,7 +306,7 @@ int pcie_speeds(struct hfi1_devdata *dd)
>   	ret = pcie_capability_read_dword(dd->pcidev, PCI_EXP_LNKCAP, &linkcap);
>   	if (ret) {
>   		dd_dev_err(dd, "Unable to read from PCI config\n");
> -		return ret;
> +		return pcibios_err_to_errno(ret);
>   	}
>   
>   	if ((linkcap & PCI_EXP_LNKCAP_SLS) != PCI_EXP_LNKCAP_SLS_8_0GB) {
> 

Reviewed-by: Dennis Dalessandro <dennis.dalessandro@...el.com>