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authorAlexandre Bounine <alexandre.bounine@idt.com>2011-01-12 17:00:40 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-13 08:03:18 -0800
commite6536927e64a2511864f2141d3e5b198b3f25ba6 (patch)
tree5fafa02d6542e9ba215fd6606590b3fc34095359 /drivers/rapidio/rio.c
parentded05782719d0f7e79af98be7cf88c7e23a90435 (diff)
downloadop-kernel-dev-e6536927e64a2511864f2141d3e5b198b3f25ba6.zip
op-kernel-dev-e6536927e64a2511864f2141d3e5b198b3f25ba6.tar.gz
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 <alexandre.bounine@idt.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Thomas Moll <thomas.moll@sysgo.com> 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.c')
-rw-r--r--drivers/rapidio/rio.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/rapidio/rio.c b/drivers/rapidio/rio.c
index c13289e..cc2a3b7 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",
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