Thread (37 messages) 37 messages, 11 authors, 2014-09-15

[Linaro-acpi] [RFC PATCH for Juno 1/2] net: smsc911x add support for probing from ACPI

From: Graeme Gregory <hidden>
Date: 2014-09-01 17:03:05
Also in: linux-acpi, lkml

On Mon, Sep 01, 2014 at 05:53:33PM +0100, Catalin Marinas wrote:
On Mon, Sep 01, 2014 at 04:28:54PM +0100, Graeme Gregory wrote:
quoted
On Mon, Sep 01, 2014 at 05:17:51PM +0200, Arnd Bergmann wrote:
quoted
On Monday 01 September 2014 23:06:00 Hanjun Guo wrote:
quoted
+#ifdef CONFIG_ACPI
+/* Configure some sensible defaults for ACPI mode */
+static int smsc911x_probe_config_acpi(struct smsc911x_platform_config *config,
+                                   acpi_handle *ahandle)
+{
+       if (!ahandle)
+               return -ENOSYS;
+
+       config->phy_interface = PHY_INTERFACE_MODE_MII;
Please remove the #ifdef and use 

	if (!IS_ENABLED(CONFIG_ACPI) || !ahandle)

to check for ACPI support. This should result in the same object code
in all cases, but give better compile-time coverage when ACPI is
disabled.
struct acpi_handle does not exist in the case !CONFIG_ACPI
Confused. Then how come smsc911x_drv_probe() has this line:

	acpi_handle *ahandle = ACPI_HANDLE(&pdev->dev);

without any #ifdef's.
It is possible I confused myself as some types moved around in ACPI
recently. I will re-check!

Graeme
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