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
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------------------------------------------------------
From: Alexandre Bounine <[email protected]>
Subject: rapidio/tsi721: fix bug in inbound doorbell handler
Fixes queue wrapping bug in Inbound Doorbell handling routine.
Signed-off-by: Alexandre Bounine <[email protected]>
Cc: Chul Kim <[email protected]>
Cc: Matt Porter <[email protected]>
Cc: <[email protected]> [3.2.x+]
Signed-off-by: Andrew Morton <[email protected]>
---
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 [email protected] are
rapidio-tsi721-fix-bug-in-inbound-doorbell-handler.patch
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