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authorJason Gunthorpe <jgg@mellanox.com>2019-10-28 22:36:29 +0300
committerJason Gunthorpe <jgg@mellanox.com>2019-10-28 22:36:29 +0300
commit036313316d3a38bfde9ba49b3d00f73b7d8019d2 (patch)
tree284127b68e10bd919adb420a5f37dc19d06532f6 /drivers/input/misc/soc_button_array.c
parenta52dc3a100958f4bf5e921067ba626c2caf8e55f (diff)
parentd6d5df1db6e9d7f8f76d2911707f7d5877251b02 (diff)
downloadlinux-036313316d3a38bfde9ba49b3d00f73b7d8019d2.tar.xz
Merge tag 'v5.4-rc5' into rdma.git for-next
Linux 5.4-rc5 For dependencies in the next patches Conflict resolved by keeping the delete of the unlock. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/input/misc/soc_button_array.c')
-rw-r--r--drivers/input/misc/soc_button_array.c17
1 files changed, 12 insertions, 5 deletions
diff --git a/drivers/input/misc/soc_button_array.c b/drivers/input/misc/soc_button_array.c
index 97e3639e99d0..08520b3a18b8 100644
--- a/drivers/input/misc/soc_button_array.c
+++ b/drivers/input/misc/soc_button_array.c
@@ -92,11 +92,18 @@ soc_button_device_create(struct platform_device *pdev,
continue;
gpio = soc_button_lookup_gpio(&pdev->dev, info->acpi_index);
- if (gpio < 0 && gpio != -ENOENT) {
- error = gpio;
- goto err_free_mem;
- } else if (!gpio_is_valid(gpio)) {
- /* Skip GPIO if not present */
+ if (!gpio_is_valid(gpio)) {
+ /*
+ * Skip GPIO if not present. Note we deliberately
+ * ignore -EPROBE_DEFER errors here. On some devices
+ * Intel is using so called virtual GPIOs which are not
+ * GPIOs at all but some way for AML code to check some
+ * random status bits without need a custom opregion.
+ * In some cases the resources table we parse points to
+ * such a virtual GPIO, since these are not real GPIOs
+ * we do not have a driver for these so they will never
+ * show up, therefore we ignore -EPROBE_DEFER.
+ */
continue;
}