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| author | Wolfram Sang <wsa+renesas@sang-engineering.com> | 2024-04-26 09:44:08 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-05-02 17:35:34 +0300 |
| commit | 357c64ef1ef39b1e7cd91ab6bdd304d043702c83 (patch) | |
| tree | f78920f1351b15cb318ea37bc30306c2ee376136 /lib | |
| parent | bfd2fdbd1e6610a1ab39452b30217d4fb4de3529 (diff) | |
| download | linux-357c64ef1ef39b1e7cd91ab6bdd304d043702c83.tar.xz | |
i2c: smbus: fix NULL function pointer dereference
[ Upstream commit 91811a31b68d3765b3065f4bb6d7d6d84a7cfc9f ]
Baruch reported an OOPS when using the designware controller as target
only. Target-only modes break the assumption of one transfer function
always being available. Fix this by always checking the pointer in
__i2c_transfer.
Reported-by: Baruch Siach <baruch@tkos.co.il>
Closes: https://lore.kernel.org/r/4269631780e5ba789cf1ae391eec1b959def7d99.1712761976.git.baruch@tkos.co.il
Fixes: 4b1acc43331d ("i2c: core changes for slave support")
[wsa: dropped the simplification in core-smbus to avoid theoretical regressions]
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions