diff options
| author | Amol Lad <amol@verismonetworks.com> | 2006-09-30 23:29:20 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-01 00:39:32 -0700 |
| commit | f12ad7d59ab77591e4ab2dacd6faa9ea9afffb99 (patch) | |
| tree | b7213b6cd80ae087076b4d1f99111be02797941d /drivers/serial/8250_acorn.c | |
| parent | 16c564bb3cdecbc39eab5c0de3fe94ed58ba4163 (diff) | |
| download | lwn-f12ad7d59ab77591e4ab2dacd6faa9ea9afffb99.tar.gz lwn-f12ad7d59ab77591e4ab2dacd6faa9ea9afffb99.zip | |
[PATCH] ioremap balanced with iounmap for drivers/serial/8250_acorn,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/8250_acorn.c')
| -rw-r--r-- | drivers/serial/8250_acorn.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/serial/8250_acorn.c b/drivers/serial/8250_acorn.c index 32af3650e8b4..ef8cc8a70c60 100644 --- a/drivers/serial/8250_acorn.c +++ b/drivers/serial/8250_acorn.c @@ -35,6 +35,7 @@ struct serial_card_type { struct serial_card_info { unsigned int num_ports; int ports[MAX_PORTS]; + void __iomem *vaddr; }; static int __devinit @@ -44,7 +45,6 @@ serial_card_probe(struct expansion_card *ec, const struct ecard_id *id) struct serial_card_type *type = id->data; struct uart_port port; unsigned long bus_addr; - unsigned char __iomem *virt_addr; unsigned int i; info = kmalloc(sizeof(struct serial_card_info), GFP_KERNEL); @@ -55,8 +55,8 @@ serial_card_probe(struct expansion_card *ec, const struct ecard_id *id) info->num_ports = type->num_ports; bus_addr = ecard_resource_start(ec, type->type); - virt_addr = ioremap(bus_addr, ecard_resource_len(ec, type->type)); - if (!virt_addr) { + info->vaddr = ioremap(bus_addr, ecard_resource_len(ec, type->type)); + if (!info->vaddr) { kfree(info); return -ENOMEM; } @@ -72,7 +72,7 @@ serial_card_probe(struct expansion_card *ec, const struct ecard_id *id) port.dev = &ec->dev; for (i = 0; i < info->num_ports; i ++) { - port.membase = virt_addr + type->offset[i]; + port.membase = info->vaddr + type->offset[i]; port.mapbase = bus_addr + type->offset[i]; info->ports[i] = serial8250_register_port(&port); @@ -92,6 +92,7 @@ static void __devexit serial_card_remove(struct expansion_card *ec) if (info->ports[i] > 0) serial8250_unregister_port(info->ports[i]); + iounmap(info->vaddr); kfree(info); } |