mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-28 15:20:41 +00:00
serial: 8250_mid: Balance reference count for PCI DMA device
[ Upstream commit67ec6dd0b2
] The pci_get_slot() increases its reference count, the caller must decrement the reference count by calling pci_dev_put(). Fixes:90b9aacf91
("serial: 8250_pci: add Intel Tangier support") Fixes:f549e94eff
("serial: 8250_pci: add Intel Penwell ports") Reported-by: Qing Wang <wangqing@vivo.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Depends-on:d9eda9bab2
("serial: 8250_pci: Intel MID UART support to its own driver") Link: https://lore.kernel.org/r/20220215100920.41984-1-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
parent
96219d36fe
commit
1345af488a
1 changed files with 15 additions and 4 deletions
|
@ -75,6 +75,11 @@ static int pnw_setup(struct mid8250 *mid, struct uart_port *p)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static void pnw_exit(struct mid8250 *mid)
|
||||
{
|
||||
pci_dev_put(mid->dma_dev);
|
||||
}
|
||||
|
||||
static int tng_handle_irq(struct uart_port *p)
|
||||
{
|
||||
struct mid8250 *mid = p->private_data;
|
||||
|
@ -126,6 +131,11 @@ static int tng_setup(struct mid8250 *mid, struct uart_port *p)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static void tng_exit(struct mid8250 *mid)
|
||||
{
|
||||
pci_dev_put(mid->dma_dev);
|
||||
}
|
||||
|
||||
static int dnv_handle_irq(struct uart_port *p)
|
||||
{
|
||||
struct mid8250 *mid = p->private_data;
|
||||
|
@ -332,9 +342,9 @@ static int mid8250_probe(struct pci_dev *pdev, const struct pci_device_id *id)
|
|||
|
||||
pci_set_drvdata(pdev, mid);
|
||||
return 0;
|
||||
|
||||
err:
|
||||
if (mid->board->exit)
|
||||
mid->board->exit(mid);
|
||||
mid->board->exit(mid);
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
@ -344,8 +354,7 @@ static void mid8250_remove(struct pci_dev *pdev)
|
|||
|
||||
serial8250_unregister_port(mid->line);
|
||||
|
||||
if (mid->board->exit)
|
||||
mid->board->exit(mid);
|
||||
mid->board->exit(mid);
|
||||
}
|
||||
|
||||
static const struct mid8250_board pnw_board = {
|
||||
|
@ -353,6 +362,7 @@ static const struct mid8250_board pnw_board = {
|
|||
.freq = 50000000,
|
||||
.base_baud = 115200,
|
||||
.setup = pnw_setup,
|
||||
.exit = pnw_exit,
|
||||
};
|
||||
|
||||
static const struct mid8250_board tng_board = {
|
||||
|
@ -360,6 +370,7 @@ static const struct mid8250_board tng_board = {
|
|||
.freq = 38400000,
|
||||
.base_baud = 1843200,
|
||||
.setup = tng_setup,
|
||||
.exit = tng_exit,
|
||||
};
|
||||
|
||||
static const struct mid8250_board dnv_board = {
|
||||
|
|
Loading…
Reference in a new issue