From 191c5f10275cfbb36802edadbdb10c73537327b4 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 15 Nov 2012 09:49:56 +0100 Subject: TTY: call tty_port_destroy in the rest of drivers After commit "TTY: move tty buffers to tty_port", the tty buffers are not freed in some drivers. This is because tty_port_destructor is not called whenever a tty_port is freed. This was an assumption I counted with but was unfortunately untrue. So fix the drivers to fulfil this assumption. To be sure, the TTY buffers (and later some stuff) are gone along with the tty_port, we have to call tty_port_destroy at tear-down places. This is mostly where the structure containing a tty_port is freed. This patch does exactly that -- put tty_port_destroy at those places. Signed-off-by: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- drivers/tty/mxser.c | 25 +++++++++++++++++-------- 1 file changed, 17 insertions(+), 8 deletions(-) (limited to 'drivers/tty/mxser.c') diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c index cfda47dabd28..802a248e7ab9 100644 --- a/drivers/tty/mxser.c +++ b/drivers/tty/mxser.c @@ -2411,14 +2411,27 @@ static int __devinit mxser_initbrd(struct mxser_board *brd, retval = request_irq(brd->irq, mxser_interrupt, IRQF_SHARED, "mxser", brd); - if (retval) + if (retval) { + for (i = 0; i < brd->info->nports; i++) + tty_port_destroy(&brd->ports[i].port); printk(KERN_ERR "Board %s: Request irq failed, IRQ (%d) may " "conflict with another device.\n", brd->info->name, brd->irq); + } return retval; } +static void mxser_board_remove(struct mxser_board *brd) +{ + unsigned int i; + + for (i = 0; i < brd->info->nports; i++) { + tty_unregister_device(mxvar_sdriver, brd->idx + i); + tty_port_destroy(&brd->ports[i].port); + } +} + static int __init mxser_get_ISA_conf(int cap, struct mxser_board *brd) { int id, i, bits, ret; @@ -2649,10 +2662,8 @@ static void __devexit mxser_remove(struct pci_dev *pdev) { #ifdef CONFIG_PCI struct mxser_board *brd = pci_get_drvdata(pdev); - unsigned int i; - for (i = 0; i < brd->info->nports; i++) - tty_unregister_device(mxvar_sdriver, brd->idx + i); + mxser_board_remove(brd); free_irq(pdev->irq, brd); pci_release_region(pdev, 2); @@ -2748,15 +2759,13 @@ err_put: static void __exit mxser_module_exit(void) { - unsigned int i, j; + unsigned int i; pci_unregister_driver(&mxser_driver); for (i = 0; i < MXSER_BOARDS; i++) /* ISA remains */ if (mxser_boards[i].info != NULL) - for (j = 0; j < mxser_boards[i].info->nports; j++) - tty_unregister_device(mxvar_sdriver, - mxser_boards[i].idx + j); + mxser_board_remove(&mxser_boards[i]); tty_unregister_driver(mxvar_sdriver); put_tty_driver(mxvar_sdriver); -- cgit v1.2.1