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staging: dgnc: introduce the dgnc_free_irq()

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The dgnc_free_irq() will free the requested IRQ from
the dgnc_request_irq().

Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Daeseok Youn 2016-09-26 09:45:14 +09:00 committed by Greg Kroah-Hartman
parent 0d79f59dbe
commit 5897914f0a
1 changed files with 10 additions and 1 deletions
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11
drivers/staging/dgnc/dgnc_driver.c
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@ -38,6 +38,7 @@ MODULE_SUPPORTED_DEVICE("dgnc");
*/ */
static int dgnc_start(void); static int dgnc_start(void);
static int dgnc_request_irq(struct dgnc_board *brd); static int dgnc_request_irq(struct dgnc_board *brd);
static void dgnc_free_irq(struct dgnc_board *brd);
static struct dgnc_board *dgnc_found_board(struct pci_dev *pdev, int id); static struct dgnc_board *dgnc_found_board(struct pci_dev *pdev, int id);
static void dgnc_cleanup_board(struct dgnc_board *brd); static void dgnc_cleanup_board(struct dgnc_board *brd);
static void dgnc_poll_handler(ulong dummy); static void dgnc_poll_handler(ulong dummy);
@ -305,7 +306,7 @@ static int dgnc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
rc = dgnc_tty_init(brd); rc = dgnc_tty_init(brd);
if (rc < 0) { if (rc < 0) {
pr_err(DRVSTR ": Can't init tty devices (%d)\n", rc); pr_err(DRVSTR ": Can't init tty devices (%d)\n", rc);
goto unregister_tty; goto free_irq;
} }
brd->state = BOARD_READY; brd->state = BOARD_READY;
@ -317,6 +318,8 @@ static int dgnc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
return 0; return 0;
free_irq:
dgnc_free_irq(brd);
unregister_tty: unregister_tty:
dgnc_tty_unregister(brd); dgnc_tty_unregister(brd);
@ -577,6 +580,12 @@ static int dgnc_request_irq(struct dgnc_board *brd)
return rc; return rc;
} }
static void dgnc_free_irq(struct dgnc_board *brd)
{
if (brd->irq)
free_irq(brd->irq, brd);
}
/* /*
* Remap PCI memory. * Remap PCI memory.
*/ */