diff options
| author | Amol Lad <amol@verismonetworks.com> | 2006-10-01 08:29:22 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-01 09:39:32 +0200 |
| commit | 6257b3bdfde4295c04872d710c2419ff8efc1b86 (patch) | |
| tree | 443b1cb09a00eeeeef789af521d9a3c0adad9c79 /drivers/serial/ip22zilog.c | |
| parent | [PATCH] ioremap balanced with iounmap for drivers/serial/ioc4_serial.c (diff) | |
| download | linux-6257b3bdfde4295c04872d710c2419ff8efc1b86.tar.xz linux-6257b3bdfde4295c04872d710c2419ff8efc1b86.zip | |
[PATCH] ioremap balanced with iounmap for drivers/serial/ip22zilog.c
ioremap must be balanced by an iounmap and failing to do so can result
in a memory leak.
Signed-off-by: Amol Lad <amol@verismonetworks.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/serial/ip22zilog.c')
| -rw-r--r-- | drivers/serial/ip22zilog.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/serial/ip22zilog.c b/drivers/serial/ip22zilog.c index 5ff269fb604c..dbf13c03a1bb 100644 --- a/drivers/serial/ip22zilog.c +++ b/drivers/serial/ip22zilog.c @@ -1229,13 +1229,27 @@ static int __init ip22zilog_init(void) static void __exit ip22zilog_exit(void) { int i; + struct uart_ip22zilog_port *up; for (i = 0; i < NUM_CHANNELS; i++) { - struct uart_ip22zilog_port *up = &ip22zilog_port_table[i]; + up = &ip22zilog_port_table[i]; uart_remove_one_port(&ip22zilog_reg, &up->port); } + /* Free IO mem */ + up = &ip22zilog_port_table[0]; + for (i = 0; i < NUM_IP22ZILOG; i++) { + if (up[(i * 2) + 0].port.mapbase) { + iounmap((void*)up[(i * 2) + 0].port.mapbase); + up[(i * 2) + 0].port.mapbase = 0; + } + if (up[(i * 2) + 1].port.mapbase) { + iounmap((void*)up[(i * 2) + 1].port.mapbase); + up[(i * 2) + 1].port.mapbase = 0; + } + } + uart_unregister_driver(&ip22zilog_reg); } |