From e6536927e64a2511864f2141d3e5b198b3f25ba6 Mon Sep 17 00:00:00 2001 From: Alexandre Bounine Date: Wed, 12 Jan 2011 17:00:40 -0800 Subject: rapidio: add definitions of Component Tag fields Add definition of the unique device identifier field in the component tag. RIO_CTAG_UDEVID does not take all 32 bits of the component tag value to allow future extensions to the component tag use. Selected size of the RIO_CTAG_UDEVID field (17 bits) is sufficient to accommodate maximum number of endpoints in large RIO network (16-bit id) plus switches. Signed-off-by: Alexandre Bounine Cc: Kumar Gala Cc: Matt Porter Cc: Li Yang Cc: Thomas Moll Cc: Micha Nelissen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rapidio/rio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/rapidio/rio.c') diff --git a/drivers/rapidio/rio.c b/drivers/rapidio/rio.c index c13289e10bb1..cc2a3b74d0f0 100644 --- a/drivers/rapidio/rio.c +++ b/drivers/rapidio/rio.c @@ -710,7 +710,7 @@ int rio_inb_pwrite_handler(union rio_pw_msg *pw_msg) u32 err_status, em_perrdet, em_ltlerrdet; int rc, portnum; - rdev = rio_get_comptag(pw_msg->em.comptag, NULL); + rdev = rio_get_comptag((pw_msg->em.comptag & RIO_CTAG_UDEVID), NULL); if (rdev == NULL) { /* Device removed or enumeration error */ pr_debug("RIO: %s No matching device for CTag 0x%08x\n", -- cgit v1.2.3