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ca8210: Fix crash by zero initializing data

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[ Upstream commit 1e24c54da257ab93cff5826be8a793b014a5dc9c ]

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: ded845a781a5 ("ieee802154: Add CA8210 IEEE 802.15.4 device driver")
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Link: https://lore.kernel.org/r/20221121002201.1339636-1-hauke@hauke-m.de
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Hauke Mehrtens 2022-11-21 01:22:01 +01:00 committed by Greg Kroah-Hartman
parent 3c8bb35700
commit 639e5b3f9c
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ieee802154/ca8210.c
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@ -885,7 +885,7 @@ 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;