Messages in this thread | | | Date | Tue, 31 May 2016 09:25:37 +0200 | Subject | [GIT PULL] GPIO fixes for v4.7, take one | From | Linus Walleij <> |
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Hi Linus,
here is a set of GPIO fixes mostly fixing my own mistakes. The details are in the signed tag. They are mostly about corner cases in the infrastructure, less used features like getting a pins direction and handling of optional GPIO lines.
Details in the signed tag.
Please pull it in!
Yours, Linus Walleij
The following changes since commit 1a695a905c18548062509178b98bc91e67510864:
Linux 4.7-rc1 (2016-05-29 09:29:24 -0700)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git tags/gpio-v4.7-2
for you to fetch changes up to 545ebd9a9be6bcbcf3e8dc24b874bfd634131946:
gpio: drop lock before reading GPIO direction (2016-05-30 17:11:59 +0200)
---------------------------------------------------------------- A bunch of GPIO fixes for the v4.7 series:
- Drop the lock before reading out the GPIO direction setting in drivers supporting the .get_direction() callback: some of them may be slowpath.
- Flush GPIO direction setting before locking a GPIO as an IRQ: some electronics or other poking around in the registers behind our back may have happened, so flush the direction status before trying to lock the line for use by IRQs.
- Bail out silently when asked to perform operations on NULL GPIO descriptors. That is what all the get_*_optional() is about: we get optional GPIO handles, if they are not there, we get NULL.
- Handle compatible ioctl() correctly: we need to convert the ioctl() pointer using compat_ptr() here like everyone else.
- Disable the broken .to_irq() on the LPC32xx platform. The whole irqchip infrastructure was replaced in the last merge window, and a new implementation will be needed.
---------------------------------------------------------------- Linus Walleij (4): gpio: flush direction status in gpiochip_lock_as_irq() gpio: handle compatible ioctl() pointers gpio: bail out silently on NULL descriptors gpio: drop lock before reading GPIO direction
Sylvain Lemieux (1): gpio: lpc32xx: disable broken to_irq support
drivers/gpio/gpio-lpc32xx.c | 48 +----------------------------------------- drivers/gpio/gpiolib.c | 51 +++++++++++++++++++++++++++++++++++---------- 2 files changed, 41 insertions(+), 58 deletions(-)
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