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[0/4] Fix the regression for the thunderx gpio

Message ID 20200114082821.14015-1-haokexin@gmail.com
Headers show
Series Fix the regression for the thunderx gpio | expand

Message

Kevin Hao Jan. 14, 2020, 8:28 a.m. UTC 
Hi Linus,

Since the commit a7fc89f9d5fc ("gpio: thunderx: Switch to
GPIOLIB_IRQCHIP"), the thunderx gpio doesn't work anymore. I noticed
that you have submitted a patch [1] to fix the " irq_domain_push_irq: -22"
error, but the kernel would panic after applying that fix because the hwirq
passed to the msi irqdomain is still not correct. It seems that we need
more codes to make the thunderx gpio work with the GPIOLIB_IRQCHIP. So I
would prefer to revert the commit a7fc89f9d5fc first to make the thunderx
gpio to work on the 5.4.x and 5.5 at least. We can then do more test for
GPIOLIB_IRQCHIP switching (which the patch 2 ~ 4 do) before merging
them.

[1] https://patchwork.ozlabs.org/patch/1210180/

Kevin Hao (4):
  Revert "gpio: thunderx: Switch to GPIOLIB_IRQCHIP"
  gpiolib: Add support for the irqdomain which doesn't use irq_fwspec as
    arg
  gpiolib: Add the support for the msi parent domain
  gpio: thunderx: Switch to GPIOLIB_IRQCHIP

 drivers/gpio/gpio-tegra186.c             | 13 ++++++--
 drivers/gpio/gpio-thunderx.c             | 36 +++++++++++++++++++---
 drivers/gpio/gpiolib.c                   | 51 ++++++++++++++++++++++----------
 drivers/pinctrl/qcom/pinctrl-spmi-gpio.c |  2 +-
 drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c |  2 +-
 include/linux/gpio/driver.h              | 21 +++++--------
 6 files changed, 87 insertions(+), 38 deletions(-)