This is a note to let you know that I've just added the patch titled
um: random: Don't initialise hwrng struct with zero
to the 5.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
um-random-don-t-initialise-hwrng-struct-with-zero.patch
and it can be found in the queue-5.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 405f0a8d4d28cf4efa2d9727e465429ef43507b2
Author: Christopher Obbard <chris.obbard@xxxxxxxxxxxxx>
Date: Thu Jun 23 09:58:42 2022 +0100
um: random: Don't initialise hwrng struct with zero
[ Upstream commit 9e70cbd11b03889c92462cf52edb2bd023c798fa ]
Initialising the hwrng struct with zeros causes a
compile-time sparse warning:
$ ARCH=um make -j10 W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'
...
CHECK arch/um/drivers/random.c
arch/um/drivers/random.c:31:31: sparse: warning: Using plain integer as NULL pointer
Fix the warning by not initialising the hwrng struct
with zeros as it is initialised anyway during module
init.
Fixes: 72d3e093afae ("um: random: Register random as hwrng-core device")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Christopher Obbard <chris.obbard@xxxxxxxxxxxxx>
Signed-off-by: Richard Weinberger <richard@xxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/um/drivers/random.c b/arch/um/drivers/random.c
index 433a3f8f2ef3..32b3341fe970 100644
--- a/arch/um/drivers/random.c
+++ b/arch/um/drivers/random.c
@@ -28,7 +28,7 @@
* protects against a module being loaded twice at the same time.
*/
static int random_fd = -1;
-static struct hwrng hwrng = { 0, };
+static struct hwrng hwrng;
static DECLARE_COMPLETION(have_data);
static int rng_dev_read(struct hwrng *rng, void *buf, size_t max, bool block)
