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Message-ID: <4723D100.5050209@student.tuwien.ac.at> Date: Sun, 28 Oct 2007 02:00:00 +0200 From: Oliver Martin <oliver.martin@...dent.tuwien.ac.at> To: linux-kernel@...r.kernel.org CC: Oliver Martin <oliver.martin@...dent.tuwien.ac.at> Subject: USB_SUSPEND needs SUSPEND? Hello, it seems that there is some dependency missing for CONFIG_USB_SUSPEND. When I compile a kernel without CONFIG_SUSPEND, USB suspend doesn't work (or at least doesn't expose its interface to userspace). /sys/bus/usb/devices/.../power doesn't exist, but it is there when I enable CONFIG_SUSPEND. So should CONFIG_USB_SUSPEND depend on CONFIG_SUSPEND (or something selected by CONFIG_SUSPEND)? diff between the two configs follows, full config and dmesg for both kernels is available at http://stud4.tuwien.ac.at/~e0626486/usb_suspend/ (though the dmesg diff doesn't seem to be all that interesting). --- /boot/config-2.6.23.1-nosuspend +++ /boot/config-2.6.23.1-suspend @@ -1,7 +1,7 @@ # # Automatically generated make config: don't edit # Linux kernel version: 2.6.23.1 -# Sat Oct 27 23:59:11 2007 +# Sat Oct 27 22:45:27 2007 # CONFIG_X86_32=y CONFIG_GENERIC_TIME=y @@ -30,7 +30,7 @@ CONFIG_EXPERIMENTAL=y CONFIG_BROKEN_ON_SMP=y CONFIG_INIT_ENV_ARG_LIMIT=32 -CONFIG_LOCALVERSION="-nosuspend" +CONFIG_LOCALVERSION="-suspend" # CONFIG_LOCALVERSION_AUTO is not set CONFIG_SWAP=y CONFIG_SYSVIPC=y @@ -229,11 +229,13 @@ CONFIG_PM=y CONFIG_PM_LEGACY=y # CONFIG_PM_DEBUG is not set +CONFIG_PM_SLEEP=y CONFIG_SUSPEND_UP_POSSIBLE=y -# CONFIG_SUSPEND is not set +CONFIG_SUSPEND=y CONFIG_HIBERNATION_UP_POSSIBLE=y # CONFIG_HIBERNATION is not set CONFIG_ACPI=y +CONFIG_ACPI_SLEEP=y CONFIG_ACPI_PROCFS=y CONFIG_ACPI_PROC_EVENT=y CONFIG_ACPI_AC=m @@ -255,6 +257,7 @@ CONFIG_X86_PM_TIMER=y CONFIG_ACPI_CONTAINER=m CONFIG_ACPI_SBS=m +# CONFIG_APM is not set # # CPU Frequency scaling -- Oliver - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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