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Wake On Lan was not working on laptop DELL Vostro 1500. If WOL was turned on, BCM4401 was powered up in suspend mode. LEDs blinked. But the laptop could not be woken up with the Magic Packet. The reason for that was that PCIE was not enabled as a system wakeup source and therefore the host PCI bridge was not powered up in suspend mode. PCIE was not enabled in suspend by PM because no child devices were registered as wakeup source during suspend process. On laptop BCM4401 is connected through the SSB bus, that is connected to the PCI-Express bus. SSB and B44 did not use standard PM wakeup functions and did not forward wakeup settings to their parents. To fix that B44 driver enables PM wakeup and registers new wakeup source using device_set_wakeup_enable(). Wakeup is automatically reported to the parent SSB bus via power.wakeup_path. SSB bus enables wakeup for the parent PCI bridge, if there is any child devices with enabled wakeup functionality. All other steps are done by PM core code. Signed-off-by: Andrey Skvortsov <Andrej.Skvortzov@gmail.com> Signed-off-by: Michael Buesch <m@bues.ch> Signed-off-by: John W. Linville <linville@tuxdriver.com> |
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|---|---|---|
| .. | ||
| b43_pci_bridge.c | ||
| driver_chipcommon_pmu.c | ||
| driver_chipcommon_sflash.c | ||
| driver_chipcommon.c | ||
| driver_extif.c | ||
| driver_gige.c | ||
| driver_gpio.c | ||
| driver_mipscore.c | ||
| driver_pcicore.c | ||
| embedded.c | ||
| Kconfig | ||
| main.c | ||
| Makefile | ||
| pci.c | ||
| pcihost_wrapper.c | ||
| pcmcia.c | ||
| scan.c | ||
| sdio.c | ||
| sprom.c | ||
| ssb_private.h | ||