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rapidio: move rio_pw_enable into core code

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Make rio_pw_enable() routine available to other RapidIO drivers.

Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Cc: Andre van Herk <andre.van.herk@prodrive-technologies.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alexandre Bounine
2016-03-22 14:26:41 -07:00
committed by Linus Torvalds
parent 5024622f58
commit b6cb95e8eb
4 changed files with 22 additions and 11 deletions
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19
drivers/rapidio/rio.c
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@@ -559,6 +559,24 @@ 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.
@@ -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;
}