ca8210: Fix crash by zero initializing data

stable inclusion
from stable-v5.10.159
commit 0a8e66e375736ea12c11f0ef238ba2a8efec460b
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7NTXH

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=0a8e66e375736ea12c11f0ef238ba2a8efec460b

--------------------------------

[ Upstream commit 1e24c54d ]

The struct cas_control embeds multiple generic SPI structures and we
have to make sure these structures are initialized to default values.
This driver does not set all attributes. When using kmalloc before some
attributes were not initialized and contained random data which caused
random crashes at bootup.

Fixes: ded845a7 ("ieee802154: Add CA8210 IEEE 802.15.4 device driver")
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Link: https://lore.kernel.org/r/20221121002201.1339636-1-hauke@hauke-m.deSigned-off-by: NStefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: Nsanglipeng <sanglipeng1@jd.com>
(cherry picked from commit ebbd6f53)

drivers/net/ieee802154/ca8210.c

@@ -926,7 +926,7 @@ static int ca8210_spi_transfer(
 
 	dev_dbg(&spi->dev, "%s called\n", __func__);
 
-	cas_ctl = kmalloc(sizeof(*cas_ctl), GFP_ATOMIC);
+	cas_ctl = kzalloc(sizeof(*cas_ctl), GFP_ATOMIC);
 	if (!cas_ctl)
 		return -ENOMEM;