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[PATCH] Char: mxser_new, correct fail paths

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Resources were not released in some fail paths.  Correct this behaviour by
implementing function and calling it when something fails.

Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jiri Slaby 2006-12-08 02:38:25 -08:00 committed by Linus Torvalds
parent 214efebba8
commit 171d3a8678
1 changed files with 24 additions and 25 deletions
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49
drivers/char/mxser_new.c
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@ -2563,6 +2563,22 @@ static const struct tty_operations mxser_ops = {
* The MOXA Smartio/Industio serial driver boot-time initialization code!
*/
static void mxser_release_res(struct mxser_board *brd, unsigned int irq)
{
struct pci_dev *pdev = brd->pdev;
if (irq)
free_irq(brd->irq, brd);
if (pdev != NULL) { /* PCI */
pci_release_region(pdev, 2);
pci_release_region(pdev, 3);
pci_dev_put(pdev);
} else {
release_region(brd->ports[0].ioaddr, 8 * brd->nports);
release_region(brd->vector, 1);
}
}
static int __devinit mxser_initbrd(struct mxser_board *brd)
{
struct mxser_port *info;
@ -2613,6 +2629,8 @@ static int __devinit mxser_initbrd(struct mxser_board *brd)
printk(KERN_ERR "Board %s: Request irq failed, IRQ (%d) may "
"conflict with another device.\n",
mxser_brdname[brd->board_type - 1], brd->irq);
/* We hold resources, we need to release them. */
mxser_release_res(brd, 0);
return retval;
}
return 0;
@ -2963,14 +2981,9 @@ static int __init mxser_module_init(void)
" driver !\n");
put_tty_driver(mxvar_sdriver);
for (i = 0; i < MXSER_BOARDS; i++) {
if (mxser_boards[i].board_type == -1)
continue;
else {
free_irq(mxser_boards[i].irq, &mxser_boards[i]);
/* todo: release io, vector */
}
}
for (i = 0; i < MXSER_BOARDS; i++)
if (mxser_boards[i].board_type != -1)
mxser_release_res(&mxser_boards[i], 1);
return retval;
}
@ -2991,24 +3004,10 @@ static void __exit mxser_module_exit(void)
else
printk(KERN_ERR "Couldn't unregister MOXA Smartio/Industio family serial driver\n");
for (i = 0; i < MXSER_BOARDS; i++) {
struct pci_dev *pdev;
for (i = 0; i < MXSER_BOARDS; i++)
if (mxser_boards[i].board_type != -1)
mxser_release_res(&mxser_boards[i], 1);
if (mxser_boards[i].board_type == -1)
continue;
else {
pdev = mxser_boards[i].pdev;
free_irq(mxser_boards[i].irq, &mxser_boards[i]);
if (pdev != NULL) { /* PCI */
pci_release_region(pdev, 2);
pci_release_region(pdev, 3);
pci_dev_put(pdev);
} else {
release_region(mxser_boards[i].ports[0].ioaddr, 8 * mxser_boards[i].nports);
release_region(mxser_boards[i].vector, 1);
}
}
}
pr_debug("Done.\n");
}