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authorAlexandre Bounine <alexandre.bounine@idt.com>2010-10-28 02:34:32 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-28 05:03:15 +0400
commit6429cd49f45450cd77a57b70b0dfa98fe2794da0 (patch)
tree1d17827eb9d7163855e8836e4835b32475d72a95 /drivers/rapidio/rio.h
parentac38d7232dfa3c71b129bab3318ba327bbcf8405 (diff)
downloadlinux-6429cd49f45450cd77a57b70b0dfa98fe2794da0.tar.xz
rapidio: add handling of orphan port-write message
Add check for access to port-write (PW) message source device before processing the PW message. If source RIO device is not available (power down or RIO link failure) trace back to a last available switch/port on the PW message route and service failure at that point. 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 f27b7a9c47d2..bc71ba1d239e 100644
--- a/drivers/rapidio/rio.h
+++ b/drivers/rapidio/rio.h
@@ -14,6 +14,8 @@
#include <linux/list.h>
#include <linux/rio.h>
+#define RIO_MAX_CHK_RETRY 3
+
/* Functions internal to the RIO core code */
extern u32 rio_mport_get_feature(struct rio_mport *mport, int local, u16 destid,