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Some late fixes for the v5.9 kernel: 

- Fix a compilation issue with User Mode Linux.
 
 - Handle spurious interrupts properly in the PCA953x driver.
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Merge tag 'gpio-v5.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO fixes from Linus Walleij:
 "Some late fixes: one IRQ issue and one compilation issue for UML.

   - Fix a compilation issue with User Mode Linux

   - Handle spurious interrupts properly in the PCA953x driver"

* tag 'gpio-v5.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio: pca953x: Survive spurious interrupts
  gpiolib: Disable compat ->read() code in UML case
This commit is contained in:
Linus Torvalds 2020-10-09 11:33:48 -07:00
parent f318052ef2 8b81edd80b
commit d813a8cb8d
2 changed files with 16 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/gpio/gpio-pca953x.c
View File

@ -824,8 +824,21 @@ static irqreturn_t pca953x_irq_handler(int irq, void *devid)
ret = pca953x_irq_pending(chip, pending);
mutex_unlock(&chip->i2c_lock);
for_each_set_bit(level, pending, gc->ngpio)
handle_nested_irq(irq_find_mapping(gc->irq.domain, level));
if (ret) {
ret = 0;
for_each_set_bit(level, pending, gc->ngpio) {
int nested_irq = irq_find_mapping(gc->irq.domain, level);
if (unlikely(nested_irq <= 0)) {
dev_warn_ratelimited(gc->parent, "unmapped interrupt %d\n", level);
continue;
}
handle_nested_irq(nested_irq);
ret = 1;
}
}
return IRQ_RETVAL(ret);
}

2
drivers/gpio/gpiolib-cdev.c
View File

@ -425,7 +425,7 @@ static __poll_t lineevent_poll(struct file *file,
static ssize_t lineevent_get_size(void)
{
#ifdef __x86_64__
#if defined(CONFIG_X86_64) && !defined(CONFIG_UML)
/* i386 has no padding after 'id' */
if (in_ia32_syscall()) {
struct compat_gpioeevent_data {