[PATCH] nvmem: core: Mark nWP GPIO as non-exclusive

[Marek Vasut]

Mark the nWP GPIO as non-exclusive, because there is hardware in the
field which has multiple AT24 EEPROMs with nWP GPIO line tied to a
single GPIO. This allows such hardware to be described in DT and the
nWP GPIO operated via NVMEM force_ro sysfs attribute.

Note that GPIOD_FLAGS_BIT_NONEXCLUSIVE is a deprecated flag and should
not be used, but thus far there seems to be no replacement.

Signed-off-by: Marek Vasut <marex@xxxxxxxxxxxx>
---
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Bartosz Golaszewski <brgl@xxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Srinivas Kandagatla <srini@xxxxxxxxxx>
Cc: linux-i2c@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
 drivers/nvmem/core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index be28a366f6031..4fe2fad2f88b4 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -928,7 +928,8 @@ struct nvmem_device *nvmem_register(const struct nvmem_config *config)
 
 	if (!config->ignore_wp)
 		nvmem->wp_gpio = gpiod_get_optional(config->dev, "wp",
-						    GPIOD_OUT_HIGH);
+						    GPIOD_OUT_HIGH |
+						    GPIOD_FLAGS_BIT_NONEXCLUSIVE);
 	if (IS_ERR(nvmem->wp_gpio)) {
 		rval = PTR_ERR(nvmem->wp_gpio);
 		nvmem->wp_gpio = NULL;
-- 
2.53.0