From: Bjorn Helgaas <helgaas@kernel.org>
To: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Cc: bhelgaas@google.com, michal.simek@xilinx.com,
soren.brinkmann@xilinx.com, linux-pci@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, julia.lawall@lip6.fr
Subject: Re: [PATCH] PCI: xilinx: Modify error handling
Date: Mon, 25 Jul 2016 12:42:27 -0500 [thread overview]
Message-ID: <20160725174227.GE12484@localhost> (raw)
In-Reply-To: <20160629151820.GA14282@amitoj-Inspiron-3542>
On Wed, Jun 29, 2016 at 08:48:20PM +0530, Amitoj Kaur Chawla wrote:
> Failure of of_get_next_child returns NULL, not an ERR_PTR. Use
> appropriate error code -ENODEV to be returned on failure instead.
>
> The Coccinelle semantic patch used to find this issue is as follows:
> @@
> expression E,E1;
> @@
>
> if (
> * E == NULL
> ) { <+... when != E = E1
> PTR_ERR(E)
> ...+> }
>
> Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
> ---
> drivers/pci/host/pcie-xilinx.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/pci/host/pcie-xilinx.c b/drivers/pci/host/pcie-xilinx.c
> index 65f0fe0..d76ea8d 100644
> --- a/drivers/pci/host/pcie-xilinx.c
> +++ b/drivers/pci/host/pcie-xilinx.c
> @@ -550,7 +550,7 @@ static int xilinx_pcie_init_irq_domain(struct xilinx_pcie_port *port)
> pcie_intc_node = of_get_next_child(node, NULL);
> if (!pcie_intc_node) {
> dev_err(dev, "No PCIe Intc node found\n");
> - return PTR_ERR(pcie_intc_node);
> + return -ENODEV;
This fix is included in the patch posted by Christophe JAILLET
<christophe.jaillet@wanadoo.fr>, along with two other similar fixes.
I applied Christophe's patch to pci/host-xilinx for v4.8.
> }
>
> port->irq_domain = irq_domain_add_linear(pcie_intc_node, 4,
> --
> 1.9.1
>
> --
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prev parent reply other threads:[~2016-07-25 17:42 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-29 15:18 [PATCH] PCI: xilinx: Modify error handling Amitoj Kaur Chawla
2016-07-25 17:42 ` Bjorn Helgaas [this message]
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