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A single pin control fix for Intel machines, affecting a bunch of

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Chromebooks.
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Merge tag 'pinctrl-v4.15-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control fix from Linus Walleij:
 "A single pin control fix for Intel machines, affecting a bunch of
  Chromebooks. Nothing else collected up amazingly"

* tag 'pinctrl-v4.15-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: cherryview: Mask all interrupts on Intel_Strago based systems
This commit is contained in:
Linus Torvalds 2017-12-22 12:21:12 -08:00
commit 6ed16756cc
1 changed files with 16 additions and 0 deletions
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16
drivers/pinctrl/intel/pinctrl-cherryview.c
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@ -1620,6 +1620,22 @@ static int chv_gpio_probe(struct chv_pinctrl *pctrl, int irq)
clear_bit(i, chip->irq.valid_mask);
}
/*
* The same set of machines in chv_no_valid_mask[] have incorrectly
* configured GPIOs that generate spurious interrupts so we use
* this same list to apply another quirk for them.
*
* See also https://bugzilla.kernel.org/show_bug.cgi?id=197953.
*/
if (!need_valid_mask) {
/*
* Mask all interrupts the community is able to generate
* but leave the ones that can only generate GPEs unmasked.
*/
chv_writel(GENMASK(31, pctrl->community->nirqs),
pctrl->regs + CHV_INTMASK);
}
/* Clear all interrupts */
chv_writel(0xffff, pctrl->regs + CHV_INTSTAT);