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authorAlexandre Bounine <alexandre.bounine@idt.com>2010-10-27 15:34:32 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-27 18:03:16 -0700
commite274e0ed0a2ac31d5eaf7c891e4e1d99197517b2 (patch)
treecae2c7911b21f8ddbf52ee4fdef6673997240529 /drivers/rapidio/rio.h
parent6429cd49f45450cd77a57b70b0dfa98fe2794da0 (diff)
downloadlinux-e274e0ed0a2ac31d5eaf7c891e4e1d99197517b2.tar.bz2
rapidio: add device access check into the enumeration
Add explicit device access check before performing device enumeration. This gives a chance to clear possible link error conditions by issuing safe maintenance read request(s). Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Cc: Thomas Moll <thomas.moll@sysgo.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Micha Nelissen <micha@neli.hopto.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/rapidio/rio.h')
-rw-r--r--drivers/rapidio/rio.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/rapidio/rio.h b/drivers/rapidio/rio.h
index bc71ba1d239e..d249a1205c7d 100644
--- a/drivers/rapidio/rio.h
+++ b/drivers/rapidio/rio.h
@@ -24,6 +24,8 @@ extern u32 rio_mport_get_physefb(struct rio_mport *port, int local,
u16 destid, u8 hopcount);
extern u32 rio_mport_get_efb(struct rio_mport *port, int local, u16 destid,
u8 hopcount, u32 from);
+extern int rio_mport_chk_dev_access(struct rio_mport *mport, u16 destid,
+ u8 hopcount);
extern int rio_create_sysfs_dev_files(struct rio_dev *rdev);
extern int rio_enum_mport(struct rio_mport *mport);
extern int rio_disc_mport(struct rio_mport *mport);