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[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>
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1 changed files with 15 additions and 1 deletions
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@ -1229,13 +1229,27 @@ static int __init ip22zilog_init(void)
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static void __exit ip22zilog_exit(void)
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{
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int i;
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struct uart_ip22zilog_port *up;
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for (i = 0; i < NUM_CHANNELS; i++) {
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struct uart_ip22zilog_port *up = &ip22zilog_port_table[i];
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up = &ip22zilog_port_table[i];
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uart_remove_one_port(&ip22zilog_reg, &up->port);
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}
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/* Free IO mem */
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up = &ip22zilog_port_table[0];
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for (i = 0; i < NUM_IP22ZILOG; i++) {
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if (up[(i * 2) + 0].port.mapbase) {
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iounmap((void*)up[(i * 2) + 0].port.mapbase);
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up[(i * 2) + 0].port.mapbase = 0;
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}
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if (up[(i * 2) + 1].port.mapbase) {
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iounmap((void*)up[(i * 2) + 1].port.mapbase);
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up[(i * 2) + 1].port.mapbase = 0;
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}
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}
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uart_unregister_driver(&ip22zilog_reg);
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}
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