Commit f12ad7d5 authored by Amol Lad's avatar Amol Lad Committed by Linus Torvalds
Browse files

[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: default avatarAmol Lad <amol@verismonetworks.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 16c564bb
......@@ -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);
}
......
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