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authorJiri Slaby <jirislaby@gmail.com>2009-04-06 12:34:04 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-06 17:36:33 -0400
commit0e0fd7d73ed130583dca16405b029f56bf65109f (patch)
treed32a3aafc1abc6f86819bc52773500b9205c2136 /drivers/char
parentbbb8e6bf10c5c3c9c70a94aa26cb27f95f10dee5 (diff)
tty: moxa, fix refcounting in moxa_poll_port
There is missing tty_kref_put on some paths in moxa_poll_port, although the reference is always taken. Fix it. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Reported-by: Jan 'Yenya' Kasprzak <kas@fi.muni.cz> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/moxa.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c
index 8b0da97d5293..4a4cab73d0be 100644
--- a/drivers/char/moxa.c
+++ b/drivers/char/moxa.c
@@ -1486,11 +1486,11 @@ static int moxa_poll_port(struct moxa_port *p, unsigned int handle,
1486 } 1486 }
1487 1487
1488 if (!handle) /* nothing else to do */ 1488 if (!handle) /* nothing else to do */
1489 return 0; 1489 goto put;
1490 1490
1491 intr = readw(ip); /* port irq status */ 1491 intr = readw(ip); /* port irq status */
1492 if (intr == 0) 1492 if (intr == 0)
1493 return 0; 1493 goto put;
1494 1494
1495 writew(0, ip); /* ACK port */ 1495 writew(0, ip); /* ACK port */
1496 ofsAddr = p->tableAddr; 1496 ofsAddr = p->tableAddr;
@@ -1499,16 +1499,17 @@ static int moxa_poll_port(struct moxa_port *p, unsigned int handle,
1499 ofsAddr + HostStat); 1499 ofsAddr + HostStat);
1500 1500
1501 if (!inited) 1501 if (!inited)
1502 return 0; 1502 goto put;
1503 1503
1504 if (tty && (intr & IntrBreak) && !I_IGNBRK(tty)) { /* BREAK */ 1504 if (tty && (intr & IntrBreak) && !I_IGNBRK(tty)) { /* BREAK */
1505 tty_insert_flip_char(tty, 0, TTY_BREAK); 1505 tty_insert_flip_char(tty, 0, TTY_BREAK);
1506 tty_schedule_flip(tty); 1506 tty_schedule_flip(tty);
1507 } 1507 }
1508 tty_kref_put(tty);
1509 1508
1510 if (intr & IntrLine) 1509 if (intr & IntrLine)
1511 moxa_new_dcdstate(p, readb(ofsAddr + FlagStat) & DCD_state); 1510 moxa_new_dcdstate(p, readb(ofsAddr + FlagStat) & DCD_state);
1511put:
1512 tty_kref_put(tty);
1512 1513
1513 return 0; 1514 return 0;
1514} 1515}