[RESEND] net: can: Use device_get_match_data()
Commit Message
Use preferred device_get_match_data() instead of of_match_device() to
get the driver match data. With this, adjust the includes to explicitly
include the correct headers.
Signed-off-by: Rob Herring <robh@kernel.org>
---
drivers/net/can/c_can/c_can_platform.c | 9 +++------
drivers/net/can/flexcan/flexcan-core.c | 9 +++------
drivers/net/can/mscan/mpc5xxx_can.c | 8 ++++----
drivers/net/can/xilinx_can.c | 7 ++-----
4 files changed, 12 insertions(+), 21 deletions(-)
Comments
On Wed, Nov 15, 2023 at 03:01:28PM -0600, Rob Herring wrote:
> Use preferred device_get_match_data() instead of of_match_device() to
> get the driver match data. With this, adjust the includes to explicitly
> include the correct headers.
>
> Signed-off-by: Rob Herring <robh@kernel.org>
...
> diff --git a/drivers/net/can/xilinx_can.c b/drivers/net/can/xilinx_can.c
> index abe58f103043..f17fd43d03c0 100644
> --- a/drivers/net/can/xilinx_can.c
> +++ b/drivers/net/can/xilinx_can.c
> @@ -20,8 +20,8 @@
> #include <linux/module.h>
> #include <linux/netdevice.h>
> #include <linux/of.h>
> -#include <linux/of_device.h>
> #include <linux/platform_device.h>
> +#include <linux/property.h>
> #include <linux/skbuff.h>
> #include <linux/spinlock.h>
> #include <linux/string.h>
> @@ -1726,7 +1726,6 @@ static int xcan_probe(struct platform_device *pdev)
> struct net_device *ndev;
> struct xcan_priv *priv;
> struct phy *transceiver;
> - const struct of_device_id *of_id;
> const struct xcan_devtype_data *devtype = &xcan_axi_data;
Hi Rob,
Here devtype is initialised.
> void __iomem *addr;
> int ret;
> @@ -1741,9 +1740,7 @@ static int xcan_probe(struct platform_device *pdev)
> goto err;
> }
>
> - of_id = of_match_device(xcan_of_match, &pdev->dev);
> - if (of_id && of_id->data)
> - devtype = of_id->data;
And in the old code devtype was conditionally re-initialised here,
if a match with data was found.
But in the new code devtype is re-initialised unconditionally.
Possibly I am missing something obvious, but it seems that either this
should somehow be made conditional, or the initialisation to &xcan_axi_data
should be dropped.
> + devtype = device_get_match_data(&pdev->dev);
>
> hw_tx_max_property = devtype->flags & XCAN_FLAG_TX_MAILBOXES ?
> "tx-mailbox-count" : "tx-fifo-depth";
> --
> 2.42.0
>
On Thu, Nov 16, 2023 at 11:29 AM Simon Horman <horms@kernel.org> wrote:
>
> On Wed, Nov 15, 2023 at 03:01:28PM -0600, Rob Herring wrote:
> > Use preferred device_get_match_data() instead of of_match_device() to
> > get the driver match data. With this, adjust the includes to explicitly
> > include the correct headers.
> >
> > Signed-off-by: Rob Herring <robh@kernel.org>
>
> ...
>
> > diff --git a/drivers/net/can/xilinx_can.c b/drivers/net/can/xilinx_can.c
> > index abe58f103043..f17fd43d03c0 100644
> > --- a/drivers/net/can/xilinx_can.c
> > +++ b/drivers/net/can/xilinx_can.c
> > @@ -20,8 +20,8 @@
> > #include <linux/module.h>
> > #include <linux/netdevice.h>
> > #include <linux/of.h>
> > -#include <linux/of_device.h>
> > #include <linux/platform_device.h>
> > +#include <linux/property.h>
> > #include <linux/skbuff.h>
> > #include <linux/spinlock.h>
> > #include <linux/string.h>
> > @@ -1726,7 +1726,6 @@ static int xcan_probe(struct platform_device *pdev)
> > struct net_device *ndev;
> > struct xcan_priv *priv;
> > struct phy *transceiver;
> > - const struct of_device_id *of_id;
> > const struct xcan_devtype_data *devtype = &xcan_axi_data;
>
> Hi Rob,
>
> Here devtype is initialised.
>
> > void __iomem *addr;
> > int ret;
> > @@ -1741,9 +1740,7 @@ static int xcan_probe(struct platform_device *pdev)
> > goto err;
> > }
> >
> > - of_id = of_match_device(xcan_of_match, &pdev->dev);
> > - if (of_id && of_id->data)
> > - devtype = of_id->data;
>
> And in the old code devtype was conditionally re-initialised here,
> if a match with data was found.
>
> But in the new code devtype is re-initialised unconditionally.
>
> Possibly I am missing something obvious, but it seems that either this
> should somehow be made conditional, or the initialisation to &xcan_axi_data
> should be dropped.
of_match_device() would never fail because we only match with DT for
this driver and if we didn't match, we wouldn't be in probe. So I'll
drop the initialization.
Rob
@@ -30,9 +30,9 @@
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
+#include <linux/property.h>
#include <linux/clk.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#include <linux/mfd/syscon.h>
#include <linux/regmap.h>
@@ -259,17 +259,14 @@ static int c_can_plat_probe(struct platform_device *pdev)
void __iomem *addr;
struct net_device *dev;
struct c_can_priv *priv;
- const struct of_device_id *match;
struct resource *mem;
int irq;
struct clk *clk;
const struct c_can_driver_data *drvdata;
struct device_node *np = pdev->dev.of_node;
- match = of_match_device(c_can_of_table, &pdev->dev);
- if (match) {
- drvdata = match->data;
- } else if (pdev->id_entry->driver_data) {
+ drvdata = device_get_match_data(&pdev->dev);
+ if (!drvdata && pdev->id_entry->driver_data) {
drvdata = (struct c_can_driver_data *)
platform_get_device_id(pdev)->driver_data;
} else {
@@ -23,11 +23,11 @@
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#include <linux/pinctrl/consumer.h>
#include <linux/platform_device.h>
#include <linux/can/platform/flexcan.h>
#include <linux/pm_runtime.h>
+#include <linux/property.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
@@ -2034,7 +2034,6 @@ MODULE_DEVICE_TABLE(platform, flexcan_id_table);
static int flexcan_probe(struct platform_device *pdev)
{
- const struct of_device_id *of_id;
const struct flexcan_devtype_data *devtype_data;
struct net_device *dev;
struct flexcan_priv *priv;
@@ -2090,10 +2089,8 @@ static int flexcan_probe(struct platform_device *pdev)
if (IS_ERR(regs))
return PTR_ERR(regs);
- of_id = of_match_device(flexcan_of_match, &pdev->dev);
- if (of_id)
- devtype_data = of_id->data;
- else if (platform_get_device_id(pdev)->driver_data)
+ devtype_data = device_get_match_data(&pdev->dev);
+ if (!devtype_data && pdev->id_entry->driver_data)
devtype_data = (struct flexcan_devtype_data *)
platform_get_device_id(pdev)->driver_data;
else
@@ -12,8 +12,10 @@
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
+#include <linux/property.h>
#include <linux/netdevice.h>
#include <linux/can/dev.h>
+#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
@@ -290,7 +292,7 @@ static int mpc5xxx_can_probe(struct platform_device *ofdev)
int irq, mscan_clksrc = 0;
int err = -ENOMEM;
- data = of_device_get_match_data(&ofdev->dev);
+ data = device_get_match_data(&ofdev->dev);
if (!data)
return -EINVAL;
@@ -351,13 +353,11 @@ static int mpc5xxx_can_probe(struct platform_device *ofdev)
static void mpc5xxx_can_remove(struct platform_device *ofdev)
{
- const struct of_device_id *match;
const struct mpc5xxx_can_data *data;
struct net_device *dev = platform_get_drvdata(ofdev);
struct mscan_priv *priv = netdev_priv(dev);
- match = of_match_device(mpc5xxx_can_table, &ofdev->dev);
- data = match ? match->data : NULL;
+ data = device_get_match_data(&ofdev->dev);
unregister_mscandev(dev);
if (data && data->put_clock)
@@ -20,8 +20,8 @@
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#include <linux/platform_device.h>
+#include <linux/property.h>
#include <linux/skbuff.h>
#include <linux/spinlock.h>
#include <linux/string.h>
@@ -1726,7 +1726,6 @@ static int xcan_probe(struct platform_device *pdev)
struct net_device *ndev;
struct xcan_priv *priv;
struct phy *transceiver;
- const struct of_device_id *of_id;
const struct xcan_devtype_data *devtype = &xcan_axi_data;
void __iomem *addr;
int ret;
@@ -1741,9 +1740,7 @@ static int xcan_probe(struct platform_device *pdev)
goto err;
}
- of_id = of_match_device(xcan_of_match, &pdev->dev);
- if (of_id && of_id->data)
- devtype = of_id->data;
+ devtype = device_get_match_data(&pdev->dev);
hw_tx_max_property = devtype->flags & XCAN_FLAG_TX_MAILBOXES ?
"tx-mailbox-count" : "tx-fifo-depth";