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btmrvl: avoid double-disable_irq() race 

It's much the same as what we did for mwifiex in:
b9da4d2 mwifiex: avoid double-disable_irq() race

"We have a race where the wakeup IRQ might be in flight while we're
calling mwifiex_disable_wake() from resume(). This can leave us
disabling the IRQ twice.

Let's disable the IRQ and enable it in case if we have double-disabled
it."

Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Jeffy Chen 2017-01-23 12:18:51 +08:00 committed by Marcel Holtmann
parent 9dcbc313cd
commit 9af02d86e1
1 changed files with 6 additions and 2 deletions
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8
drivers/bluetooth/btmrvl_sdio.c
View File

@ -1682,8 +1682,12 @@ static int btmrvl_sdio_resume(struct device *dev)
/* Disable platform specific wakeup interrupt */
if (card->plt_wake_cfg && card->plt_wake_cfg->irq_bt >= 0) {
disable_irq_wake(card->plt_wake_cfg->irq_bt);
if (!card->plt_wake_cfg->wake_by_bt)
disable_irq(card->plt_wake_cfg->irq_bt);
disable_irq(card->plt_wake_cfg->irq_bt);
if (card->plt_wake_cfg->wake_by_bt)
/* Undo our disable, since interrupt handler already
* did this.
*/
enable_irq(card->plt_wake_cfg->irq_bt);
}
return 0;