[PATCH] drivers: net: Replace acpi_bus_get_device()

[PATCH] drivers: net: Replace acpi_bus_get_device()

[Rafael J. Wysocki]

From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Replace acpi_bus_get_device() that is going to be dropped with
acpi_fetch_acpi_dev().

No intentional functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 drivers/net/ethernet/cavium/thunder/thunder_bgx.c |    4 ++--
 drivers/net/fjes/fjes_main.c                      |   10 +++-------
 drivers/net/mdio/mdio-xgene.c                     |    8 +++-----
 3 files changed, 8 insertions(+), 14 deletions(-)

Index: linux-pm/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
===================================================================
--- linux-pm.orig/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
+++ linux-pm/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
@@ -1407,9 +1407,9 @@ static acpi_status bgx_acpi_register_phy
 {
 	struct bgx *bgx = context;
 	struct device *dev = &bgx->pdev->dev;
-	struct acpi_device *adev;
+	struct acpi_device *adev = acpi_fetch_acpi_dev(handle);
 
-	if (acpi_bus_get_device(handle, &adev))
+	if (!adev)
 		goto out;
 
 	acpi_get_mac_address(dev, adev, bgx->lmac[bgx->acpi_lmac_idx].mac);
Index: linux-pm/drivers/net/fjes/fjes_main.c
===================================================================
--- linux-pm.orig/drivers/net/fjes/fjes_main.c
+++ linux-pm/drivers/net/fjes/fjes_main.c
@@ -1512,15 +1512,11 @@ static acpi_status
 acpi_find_extended_socket_device(acpi_handle obj_handle, u32 level,
 				 void *context, void **return_value)
 {
-	struct acpi_device *device;
+	struct acpi_device *device = acpi_fetch_acpi_dev(obj_handle);
 	bool *found = context;
-	int result;
 
-	result = acpi_bus_get_device(obj_handle, &device);
-	if (result)
-		return AE_OK;
-
-	if (strcmp(acpi_device_hid(device), ACPI_MOTHERBOARD_RESOURCE_HID))
+	if (!device ||
+	    strcmp(acpi_device_hid(device), ACPI_MOTHERBOARD_RESOURCE_HID))
 		return AE_OK;
 
 	if (!is_extended_socket_device(device))
Index: linux-pm/drivers/net/mdio/mdio-xgene.c
===================================================================
--- linux-pm.orig/drivers/net/mdio/mdio-xgene.c
+++ linux-pm/drivers/net/mdio/mdio-xgene.c
@@ -280,15 +280,13 @@ static acpi_status acpi_register_phy(acp
 				     void *context, void **ret)
 {
 	struct mii_bus *mdio = context;
-	struct acpi_device *adev;
+	struct acpi_device *adev = acpi_fetch_acpi_dev(handle);
 	struct phy_device *phy_dev;
 	const union acpi_object *obj;
 	u32 phy_addr;
 
-	if (acpi_bus_get_device(handle, &adev))
-		return AE_OK;
-
-	if (acpi_dev_get_property(adev, "phy-channel", ACPI_TYPE_INTEGER, &obj))
+	if (!adev ||
+	    acpi_dev_get_property(adev, "phy-channel", ACPI_TYPE_INTEGER, &obj))
 		return AE_OK;
 	phy_addr = obj->integer.value;
 

Re: [PATCH] drivers: net: Replace acpi_bus_get_device()

[Andrew Lunn]

On Tue, Feb 01, 2022 at 08:07:08PM +0100, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
> 
> Replace acpi_bus_get_device() that is going to be dropped with
> acpi_fetch_acpi_dev().
> 
> No intentional functional impact.
> 
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
> ---
>  drivers/net/ethernet/cavium/thunder/thunder_bgx.c |    4 ++--
>  drivers/net/fjes/fjes_main.c                      |   10 +++-------
>  drivers/net/mdio/mdio-xgene.c                     |    8 +++-----
>  3 files changed, 8 insertions(+), 14 deletions(-)
> 
> Index: linux-pm/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
> ===================================================================
> --- linux-pm.orig/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
> +++ linux-pm/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
> @@ -1407,9 +1407,9 @@ static acpi_status bgx_acpi_register_phy
>  {
>  	struct bgx *bgx = context;
>  	struct device *dev = &bgx->pdev->dev;
> -	struct acpi_device *adev;
> +	struct acpi_device *adev = acpi_fetch_acpi_dev(handle);

Hi Rafael

Since this is part of the networking subsystem, reverse christmas tree
applies. Yes, this driver gets is wrong here, but we should not make
it even worse. Please put this variable first.

> Index: linux-pm/drivers/net/mdio/mdio-xgene.c
> ===================================================================
> --- linux-pm.orig/drivers/net/mdio/mdio-xgene.c
> +++ linux-pm/drivers/net/mdio/mdio-xgene.c
> @@ -280,15 +280,13 @@ static acpi_status acpi_register_phy(acp
>  				     void *context, void **ret)
>  {
>  	struct mii_bus *mdio = context;
> -	struct acpi_device *adev;
> +	struct acpi_device *adev = acpi_fetch_acpi_dev(handle);

Here as well please.

With those changes, you can add my Reviewed-by:

Thanks
     Andrew