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| author | Alexandre Bounine <alexandre.bounine@idt.com> | 2010-10-27 15:34:32 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-27 18:03:16 -0700 |
| commit | e274e0ed0a2ac31d5eaf7c891e4e1d99197517b2 (patch) | |
| tree | cae2c7911b21f8ddbf52ee4fdef6673997240529 /drivers/rapidio/rio.h | |
| parent | 6429cd49f45450cd77a57b70b0dfa98fe2794da0 (diff) | |
| download | linux-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.h | 2 |
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); |