On 05/16/11 20:14, Ricardo Neri wrote:
> +++ b/arch/arm/mach-omap2/devices.c
> @@ -313,6 +313,22 @@ OMAP_MCBSP_PLATFORM_DEVICE(5);
>
> static void omap_init_audio(void)
> {
> + struct omap_hwmod *oh_hdmi;
> + struct omap_device *od_hdmi;
> + char *oh_hdmi_name = "dss_hdmi";
> + char *dev_hdmi_name = "hdmi-audio-dai";
> +
> + if (cpu_is_omap44xx()) {
> + oh_hdmi = omap_hwmod_lookup(oh_hdmi_name);
> + WARN(!oh_hdmi, "%s: could not find omap_hwmod for %s\n",
> + __func__, oh_hdmi_name);
> +
> + od_hdmi = omap_device_build(dev_hdmi_name, -1, oh_hdmi, NULL, 0,
> + NULL, 0, false);
> + WARN(IS_ERR(od_hdmi), "%s: could not build omap_device for
> %s\n",
> + __func__, dev_hdmi_name);
> + }
> +
> platform_device_register(&omap_mcbsp1);
> platform_device_register(&omap_mcbsp2);
> if (cpu_is_omap243x() || cpu_is_omap34xx() || cpu_is_omap44xx()) {
I know you did not start this, but this cpu_is stuff is cheating. There
is a rule (maybe a guideline, or desire) in the kernel where they try to
minimize #ifdef in c code. So here we have a runtime ifdef. The code
will never be executed on other omap versions, but it takes up space and
obscures the code flow.
I think the generally accepted method of doing stuff like this is to
have the ifdeffery in a header file where a inline code segment is
defined if it applies to the processor being built. If the code does not
apply to the model being built, a null #define is used, which does not
take any space.
Using a conditional inline enables the only source code change for this
file (device.c) being a line where the inline code is called.
Regards, Steve
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