linux-next: build failure after merge of the driver-core tree

Stephen Rothwell
2022-12-01T02:18:31Z

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Hi all,

After merging the driver-core tree, today's linux-next build (x86_64
allmodconfig) failed like this:

drivers/gpu/drm/../../accel/drm_accel.c: In function 'accel_sysfs_init':
drivers/gpu/drm/../../accel/drm_accel.c:41:30: error: assignment to 'char * (*)(const struct device *, umode_t *)' {aka 'char * (*)(const struct device *, short unsigned int *)'} from incompatible pointer type 'char * (*)(struct device *, umode_t *)' {aka 'char * (*)(struct device *, short unsigned int *)'} [-Werror=incompatible-pointer-types]
41 | accel_class->devnode = accel_devnode;
| ^

Caused by commit

ff62b8e6588f ("driver core: make struct class.devnode() take a const *")

interacting with commit

8bf4889762a8 ("drivers/accel: define kconfig and register a new major")

from the drm tree.

I have applied the following merge resolution patch.

From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Thu, 1 Dec 2022 13:08:06 +1100
Subject: [PATCH] fix up for "drivers/accel: define kconfig and register a new major"

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
---
drivers/accel/drm_accel.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/accel/drm_accel.c b/drivers/accel/drm_accel.c
index a5ee84a4017a..1b69824286fd 100644
--- a/drivers/accel/drm_accel.c
+++ b/drivers/accel/drm_accel.c
@@ -27,7 +27,7 @@ static struct device_type accel_sysfs_device_minor = {
.name = "accel_minor"
};

-static char *accel_devnode(struct device *dev, umode_t *mode)
+static char *accel_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "accel/%s", dev_name(dev));
}
--
2.35.1

--
Cheers,
Stephen Rothwell

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