diff options
| author | Andreas Kemnade <andreas@kemnade.info> | 2023-01-13 21:59:22 +0100 |
|---|---|---|
| committer | Bartosz Golaszewski <bartosz.golaszewski@linaro.org> | 2023-01-30 15:55:29 +0100 |
| commit | 92bf78b33b0b463b00c6b0203b49aea845daecc8 (patch) | |
| tree | 75c8002d83e2642e753f5f63f087e2232b0ca1b4 /drivers/gpio | |
| parent | a5ec171efdc6151d3a51c4e1a59abb3ab9d8b710 (diff) | |
| download | linux-next-92bf78b33b0b463b00c6b0203b49aea845daecc8.tar.gz | |
gpio: omap: use dynamic allocation of base
Static allocatin is deprecated and may cause probe mess,
if probe order is unusual.
like this example
[ 2.553833] twl4030_gpio twl4030-gpio: gpio (irq 145) chaining IRQs 161..178
[ 2.561401] gpiochip_find_base: found new base at 160
[ 2.564392] gpio gpiochip5: (twl4030): added GPIO chardev (254:5)
[ 2.564544] gpio gpiochip5: registered GPIOs 160 to 177 on twl4030
[...]
[ 2.692169] omap-gpmc 6e000000.gpmc: GPMC revision 5.0
[ 2.697357] gpmc_mem_init: disabling cs 0 mapped at 0x0-0x1000000
[ 2.703643] gpiochip_find_base: found new base at 178
[ 2.704376] gpio gpiochip6: (omap-gpmc): added GPIO chardev (254:6)
[ 2.704589] gpio gpiochip6: registered GPIOs 178 to 181 on omap-gpmc
[...]
[ 2.840393] gpio gpiochip7: Static allocation of GPIO base is deprecated, use dynamic allocation.
[ 2.849365] gpio gpiochip7: (gpio-160-191): GPIO integer space overlap, cannot add chip
[ 2.857513] gpiochip_add_data_with_key: GPIOs 160..191 (gpio-160-191) failed to register, -16
[ 2.866149] omap_gpio 48310000.gpio: error -EBUSY: Could not register gpio chip
So probing was done in an unusual order, causing mess
and chips not getting their gpio in the end.
Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-omap.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c index 80ddc43fd875..f5f3d4b22452 100644 --- a/drivers/gpio/gpio-omap.c +++ b/drivers/gpio/gpio-omap.c @@ -1020,7 +1020,7 @@ static int omap_gpio_chip_init(struct gpio_bank *bank, struct irq_chip *irqc, if (!label) return -ENOMEM; bank->chip.label = label; - bank->chip.base = gpio; + bank->chip.base = -1; } bank->chip.ngpio = bank->width; |