From b6cb95e8eb97e51a1a1b5609b59df859cc6dc2f2 Mon Sep 17 00:00:00 2001 From: Alexandre Bounine Date: Tue, 22 Mar 2016 14:26:41 -0700 Subject: rapidio: move rio_pw_enable into core code Make rio_pw_enable() routine available to other RapidIO drivers. Signed-off-by: Alexandre Bounine Cc: Matt Porter Cc: Aurelien Jacquiot Cc: Andre van Herk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rapidio/rio.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'drivers/rapidio/rio.c') diff --git a/drivers/rapidio/rio.c b/drivers/rapidio/rio.c index 095801c..673774b 100644 --- a/drivers/rapidio/rio.c +++ b/drivers/rapidio/rio.c @@ -560,6 +560,24 @@ int rio_release_inb_pwrite(struct rio_dev *rdev) EXPORT_SYMBOL_GPL(rio_release_inb_pwrite); /** + * rio_pw_enable - Enables/disables port-write handling by a master port + * @mport: Master port associated with port-write handling + * @enable: 1=enable, 0=disable + */ +void rio_pw_enable(struct rio_mport *mport, int enable) +{ + if (mport->ops->pwenable) { + mutex_lock(&mport->lock); + + if ((enable && ++mport->pwe_refcnt == 1) || + (!enable && mport->pwe_refcnt && --mport->pwe_refcnt == 0)) + mport->ops->pwenable(mport, enable); + mutex_unlock(&mport->lock); + } +} +EXPORT_SYMBOL_GPL(rio_pw_enable); + +/** * rio_map_inb_region -- Map inbound memory region. * @mport: Master port. * @local: physical address of memory region to be mapped @@ -2041,6 +2059,7 @@ int rio_mport_initialize(struct rio_mport *mport) mport->host_deviceid = rio_get_hdid(mport->id); mport->nscan = NULL; mutex_init(&mport->lock); + mport->pwe_refcnt = 0; return 0; } -- cgit v1.1