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Date: Mon, 5 Jun 2017 18:30:54 -0400
From: "Jingoo Han" <jingoohan1@...il.com>
To: "'Jisheng Zhang'" <jszhang@...vell.com>, <bhelgaas@...gle.com>
Cc: <kishon@...com>, <kgene@...nel.org>, <krzk@...nel.org>,
<javier@....samsung.com>, <hongxing.zhu@....com>,
<l.stach@...gutronix.de>, <m-karicheri2@...com>,
<minghuan.Lian@...escale.com>, <mingkai.hu@...escale.com>,
<tie-fei.zang@...escale.com>,
<thomas.petazzoni@...e-electrons.com>, <niklas.cassel@...s.com>,
<jesper.nilsson@...s.com>, <Joao.Pinto@...opsys.com>,
<svarbanov@...sol.com>, <pratyush.anand@...il.com>,
<linux-omap@...r.kernel.org>, <linux-pci@...r.kernel.org>,
<linux-kernel@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-samsung-soc@...r.kernel.org>,
<linuxppc-dev@...ts.ozlabs.org>, <linux-arm-kernel@...s.com>,
<linux-arm-msm@...r.kernel.org>
Subject: Re: [PATCH] PCI: dwc: Constify dw_pcie_host_ops structures
On Monday, June 5, 2017 4:54 AM, Jisheng Zhang wrote:
>
> The dw_pcie_host_ops structures are never modified. Constify these
> structures such that these can be write-protected.
>
> Signed-off-by: Jisheng Zhang <jszhang@...vell.com>
Acked-by: Jingoo Han <jingoohan1@...il.com>
Best regards,
Jingoo Han
> ---
> drivers/pci/dwc/pci-dra7xx.c | 2 +-
> drivers/pci/dwc/pci-exynos.c | 2 +-
> drivers/pci/dwc/pci-imx6.c | 2 +-
> drivers/pci/dwc/pci-keystone.c | 2 +-
> drivers/pci/dwc/pci-layerscape.c | 6 +++---
> drivers/pci/dwc/pcie-armada8k.c | 2 +-
> drivers/pci/dwc/pcie-artpec6.c | 2 +-
> drivers/pci/dwc/pcie-designware-plat.c | 2 +-
> drivers/pci/dwc/pcie-designware.h | 2 +-
> drivers/pci/dwc/pcie-qcom.c | 2 +-
> drivers/pci/dwc/pcie-spear13xx.c | 2 +-
> 11 files changed, 13 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/pci/dwc/pci-dra7xx.c b/drivers/pci/dwc/pci-dra7xx.c
> index 8decf46cf525..e4166032b3c6 100644
> --- a/drivers/pci/dwc/pci-dra7xx.c
> +++ b/drivers/pci/dwc/pci-dra7xx.c
> @@ -208,7 +208,7 @@ static void dra7xx_pcie_host_init(struct pcie_port
*pp)
> dra7xx_pcie_enable_interrupts(dra7xx);
> }
>
> -static struct dw_pcie_host_ops dra7xx_pcie_host_ops = {
> +static const struct dw_pcie_host_ops dra7xx_pcie_host_ops = {
> .host_init = dra7xx_pcie_host_init,
> };
>
> diff --git a/drivers/pci/dwc/pci-exynos.c b/drivers/pci/dwc/pci-exynos.c
> index 546082ad5a3f..c78c06552590 100644
> --- a/drivers/pci/dwc/pci-exynos.c
> +++ b/drivers/pci/dwc/pci-exynos.c
> @@ -590,7 +590,7 @@ static void exynos_pcie_host_init(struct pcie_port
*pp)
> exynos_pcie_enable_interrupts(ep);
> }
>
> -static struct dw_pcie_host_ops exynos_pcie_host_ops = {
> +static const struct dw_pcie_host_ops exynos_pcie_host_ops = {
> .rd_own_conf = exynos_pcie_rd_own_conf,
> .wr_own_conf = exynos_pcie_wr_own_conf,
> .host_init = exynos_pcie_host_init,
> diff --git a/drivers/pci/dwc/pci-imx6.c b/drivers/pci/dwc/pci-imx6.c
> index a98cba55c7f0..fb4816088a7a 100644
> --- a/drivers/pci/dwc/pci-imx6.c
> +++ b/drivers/pci/dwc/pci-imx6.c
> @@ -602,7 +602,7 @@ static int imx6_pcie_link_up(struct dw_pcie *pci)
> PCIE_PHY_DEBUG_R1_XMLH_LINK_UP;
> }
>
> -static struct dw_pcie_host_ops imx6_pcie_host_ops = {
> +static const struct dw_pcie_host_ops imx6_pcie_host_ops = {
> .host_init = imx6_pcie_host_init,
> };
>
> diff --git a/drivers/pci/dwc/pci-keystone.c b/drivers/pci/dwc/pci-
> keystone.c
> index fcc9723bad6e..4783cec1f78d 100644
> --- a/drivers/pci/dwc/pci-keystone.c
> +++ b/drivers/pci/dwc/pci-keystone.c
> @@ -291,7 +291,7 @@ static void __init ks_pcie_host_init(struct pcie_port
> *pp)
> "Asynchronous external abort");
> }
>
> -static struct dw_pcie_host_ops keystone_pcie_host_ops = {
> +static const struct dw_pcie_host_ops keystone_pcie_host_ops = {
> .rd_other_conf = ks_dw_pcie_rd_other_conf,
> .wr_other_conf = ks_dw_pcie_wr_other_conf,
> .host_init = ks_pcie_host_init,
> diff --git a/drivers/pci/dwc/pci-layerscape.c b/drivers/pci/dwc/pci-
> layerscape.c
> index 27d638c4e134..fd861289ad8b 100644
> --- a/drivers/pci/dwc/pci-layerscape.c
> +++ b/drivers/pci/dwc/pci-layerscape.c
> @@ -39,7 +39,7 @@ struct ls_pcie_drvdata {
> u32 lut_offset;
> u32 ltssm_shift;
> u32 lut_dbg;
> - struct dw_pcie_host_ops *ops;
> + const struct dw_pcie_host_ops *ops;
> const struct dw_pcie_ops *dw_pcie_ops;
> };
>
> @@ -185,12 +185,12 @@ static int ls_pcie_msi_host_init(struct pcie_port
> *pp,
> return 0;
> }
>
> -static struct dw_pcie_host_ops ls1021_pcie_host_ops = {
> +static const struct dw_pcie_host_ops ls1021_pcie_host_ops = {
> .host_init = ls1021_pcie_host_init,
> .msi_host_init = ls_pcie_msi_host_init,
> };
>
> -static struct dw_pcie_host_ops ls_pcie_host_ops = {
> +static const struct dw_pcie_host_ops ls_pcie_host_ops = {
> .host_init = ls_pcie_host_init,
> .msi_host_init = ls_pcie_msi_host_init,
> };
> diff --git a/drivers/pci/dwc/pcie-armada8k.c b/drivers/pci/dwc/pcie-
> armada8k.c
> index 495b023042b3..ea8f34af6a85 100644
> --- a/drivers/pci/dwc/pcie-armada8k.c
> +++ b/drivers/pci/dwc/pcie-armada8k.c
> @@ -160,7 +160,7 @@ static irqreturn_t armada8k_pcie_irq_handler(int irq,
> void *arg)
> return IRQ_HANDLED;
> }
>
> -static struct dw_pcie_host_ops armada8k_pcie_host_ops = {
> +static const struct dw_pcie_host_ops armada8k_pcie_host_ops = {
> .host_init = armada8k_pcie_host_init,
> };
>
> diff --git a/drivers/pci/dwc/pcie-artpec6.c b/drivers/pci/dwc/pcie-
> artpec6.c
> index 82a04acc42fd..01c6f7823672 100644
> --- a/drivers/pci/dwc/pcie-artpec6.c
> +++ b/drivers/pci/dwc/pcie-artpec6.c
> @@ -184,7 +184,7 @@ static void artpec6_pcie_host_init(struct pcie_port
> *pp)
> artpec6_pcie_enable_interrupts(artpec6_pcie);
> }
>
> -static struct dw_pcie_host_ops artpec6_pcie_host_ops = {
> +static const struct dw_pcie_host_ops artpec6_pcie_host_ops = {
> .host_init = artpec6_pcie_host_init,
> };
>
> diff --git a/drivers/pci/dwc/pcie-designware-plat.c
> b/drivers/pci/dwc/pcie-designware-plat.c
> index a9865d91b43c..091b4e7ad059 100644
> --- a/drivers/pci/dwc/pcie-designware-plat.c
> +++ b/drivers/pci/dwc/pcie-designware-plat.c
> @@ -46,7 +46,7 @@ static void dw_plat_pcie_host_init(struct pcie_port *pp)
> dw_pcie_msi_init(pp);
> }
>
> -static struct dw_pcie_host_ops dw_plat_pcie_host_ops = {
> +static const struct dw_pcie_host_ops dw_plat_pcie_host_ops = {
> .host_init = dw_plat_pcie_host_init,
> };
>
> diff --git a/drivers/pci/dwc/pcie-designware.h b/drivers/pci/dwc/pcie-
> designware.h
> index c6a840575796..b4d2a89f8e58 100644
> --- a/drivers/pci/dwc/pcie-designware.h
> +++ b/drivers/pci/dwc/pcie-designware.h
> @@ -162,7 +162,7 @@ struct pcie_port {
> struct resource *mem;
> struct resource *busn;
> int irq;
> - struct dw_pcie_host_ops *ops;
> + const struct dw_pcie_host_ops *ops;
> int msi_irq;
> struct irq_domain *irq_domain;
> unsigned long msi_data;
> diff --git a/drivers/pci/dwc/pcie-qcom.c b/drivers/pci/dwc/pcie-qcom.c
> index 96ee527c1ed2..39e8c0095715 100644
> --- a/drivers/pci/dwc/pcie-qcom.c
> +++ b/drivers/pci/dwc/pcie-qcom.c
> @@ -634,7 +634,7 @@ static int qcom_pcie_rd_own_conf(struct pcie_port *pp,
> int where, int size,
> return dw_pcie_read(pci->dbi_base + where, size, val);
> }
>
> -static struct dw_pcie_host_ops qcom_pcie_dw_ops = {
> +static const struct dw_pcie_host_ops qcom_pcie_dw_ops = {
> .host_init = qcom_pcie_host_init,
> .rd_own_conf = qcom_pcie_rd_own_conf,
> };
> diff --git a/drivers/pci/dwc/pcie-spear13xx.c b/drivers/pci/dwc/pcie-
> spear13xx.c
> index 8ff36b3dbbdf..80897291e0fb 100644
> --- a/drivers/pci/dwc/pcie-spear13xx.c
> +++ b/drivers/pci/dwc/pcie-spear13xx.c
> @@ -186,7 +186,7 @@ static void spear13xx_pcie_host_init(struct pcie_port
> *pp)
> spear13xx_pcie_enable_interrupts(spear13xx_pcie);
> }
>
> -static struct dw_pcie_host_ops spear13xx_pcie_host_ops = {
> +static const struct dw_pcie_host_ops spear13xx_pcie_host_ops = {
> .host_init = spear13xx_pcie_host_init,
> };
>
> --
> 2.11.0
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