The patch titled
Subject: rapidio/tsi721: fix bug in inbound doorbell handler
has been added to the -mm tree. Its filename is
rapidio-tsi721-fix-bug-in-inbound-doorbell-handler.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Alexandre Bounine <alexandre.bounine@xxxxxxx>
Subject: rapidio/tsi721: fix bug in inbound doorbell handler
Fixes queue wrapping bug in Inbound Doorbell handling routine.
Signed-off-by: Alexandre Bounine <alexandre.bounine@xxxxxxx>
Cc: Chul Kim <chul.kim@xxxxxxx>
Cc: Matt Porter <mporter@xxxxxxxxxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> [3.2.x+]
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/rapidio/devices/tsi721.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff -puN drivers/rapidio/devices/tsi721.c~rapidio-tsi721-fix-bug-in-inbound-doorbell-handler drivers/rapidio/devices/tsi721.c
--- a/drivers/rapidio/devices/tsi721.c~rapidio-tsi721-fix-bug-in-inbound-doorbell-handler
+++ a/drivers/rapidio/devices/tsi721.c
@@ -410,13 +410,14 @@ static void tsi721_db_dpc(struct work_st
*/
mport = priv->mport;
- wr_ptr = ioread32(priv->regs + TSI721_IDQ_WP(IDB_QUEUE));
- rd_ptr = ioread32(priv->regs + TSI721_IDQ_RP(IDB_QUEUE));
+ wr_ptr = ioread32(priv->regs + TSI721_IDQ_WP(IDB_QUEUE)) % IDB_QSIZE;
+ rd_ptr = ioread32(priv->regs + TSI721_IDQ_RP(IDB_QUEUE)) % IDB_QSIZE;
while (wr_ptr != rd_ptr) {
idb_entry = (u64 *)(priv->idb_base +
(TSI721_IDB_ENTRY_SIZE * rd_ptr));
rd_ptr++;
+ rd_ptr %= IDB_QSIZE;
idb.msg = *idb_entry;
*idb_entry = 0;
_
Subject: Subject: rapidio/tsi721: fix bug in inbound doorbell handler
Patches currently in -mm which might be from alexandre.bounine@xxxxxxx are
rapidio-tsi721-fix-bug-in-inbound-doorbell-handler.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
