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| author | Pierre Ossman <drzeus-list@drzeus.cx> | 2005-11-29 09:09:32 +0100 |
|---|---|---|
| committer | Jaroslav Kysela <perex@suse.cz> | 2006-01-03 12:31:30 +0100 |
| commit | 68094e3251a664ee1389fcf179497237cbf78331 (patch) | |
| tree | 1f38ff587622bab4b1063c19447832f6cbff8a6f /drivers/pnp/driver.c | |
| parent | 4c98cfef2efa6b6662ac28c4f0069964bbd9fdf9 (diff) | |
| download | linux-3.10-68094e3251a664ee1389fcf179497237cbf78331.tar.gz linux-3.10-68094e3251a664ee1389fcf179497237cbf78331.tar.bz2 linux-3.10-68094e3251a664ee1389fcf179497237cbf78331.zip | |
[ALSA] [PATCH] alsa: Improved PnP suspend support
Also use the PnP functions to start/stop the devices during the suspend so
that drivers will not have to duplicate this code.
Cc: Adam Belay <ambx1@neo.rr.com>
Cc: Jaroslav Kysela <perex@suse.cz>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'drivers/pnp/driver.c')
| -rw-r--r-- | drivers/pnp/driver.c | 37 |
1 files changed, 32 insertions, 5 deletions
diff --git a/drivers/pnp/driver.c b/drivers/pnp/driver.c index ea2cb9a8b21..15fb758a9e5 100644 --- a/drivers/pnp/driver.c +++ b/drivers/pnp/driver.c @@ -150,19 +150,46 @@ static int pnp_bus_suspend(struct device *dev, pm_message_t state) { struct pnp_dev * pnp_dev = to_pnp_dev(dev); struct pnp_driver * pnp_drv = pnp_dev->driver; + int error; + + if (!pnp_drv) + return 0; + + if (pnp_drv->suspend) { + error = pnp_drv->suspend(pnp_dev, state); + if (error) + return error; + } + + if (!(pnp_drv->flags & PNP_DRIVER_RES_DO_NOT_CHANGE) && + pnp_can_disable(pnp_dev)) { + error = pnp_stop_dev(pnp_dev); + if (error) + return error; + } - if (pnp_drv && pnp_drv->suspend) - return pnp_drv->suspend(pnp_dev, state); return 0; } -static void pnp_bus_resume(struct device *dev) +static int pnp_bus_resume(struct device *dev) { struct pnp_dev * pnp_dev = to_pnp_dev(dev); struct pnp_driver * pnp_drv = pnp_dev->driver; + int error; + + if (!pnp_drv) + return 0; + + if (!(pnp_drv->flags & PNP_DRIVER_RES_DO_NOT_CHANGE)) { + error = pnp_start_dev(pnp_dev); + if (error) + return error; + } - if (pnp_drv && pnp_drv->resume) - pnp_drv->resume(pnp_dev); + if (pnp_drv->resume) + return pnp_drv->resume(pnp_dev); + + return 0; } struct bus_type pnp_bus_type = { |