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Subjectlinux-next: build failure after merge of the driver-core tree
Hi all,

After merging the driver-core tree, today's linux-next build
(s390-defconfig) failed like this:

drivers/s390/crypto/ap_bus.c:1596:20: error: initialization of 'ssize_t (*)(const struct bus_type *, char *)' {aka 'long int (*)(const struct bus_type *, char *)'} from incompatible pointer type 'ssize_t (*)(struct bus_type *, char *)' {aka 'long int (*)(struct bus_type *, char *)'} [-Werror=incompatible-pointer-types]

(reported here: http://kisskb.ellerman.id.au/kisskb/buildresult/14902509/)

Caused by commit

75cff725d956 ("driver core: bus: mark the struct bus_type for sysfs callbacks as constant")

interacting with commit

d7b1813af6a5 ("s390/ap: introduce new AP bus sysfs attribute features")

from the s390 tree.

I will apply the following (currently untested) merge fix up patch from
tomorrow:

From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Mon, 27 Mar 2023 15:42:41 +1100
Subject: [PATCH] fixup for "driver core: bus: mark the struct bus_type for sysfs callbacks as constant"

interacting with "s390/ap: introduce new AP bus sysfs attribute features"

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
---
drivers/s390/crypto/ap_bus.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index 85bb0de15e76..8d6b9a52bf3c 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -1570,7 +1570,7 @@ static ssize_t bindings_show(const struct bus_type *bus, char *buf)

static BUS_ATTR_RO(bindings);

-static ssize_t features_show(struct bus_type *bus, char *buf)
+static ssize_t features_show(const struct bus_type *bus, char *buf)
{
int n = 0;

--
2.39.2
--
Cheers,
Stephen Rothwell
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