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| author |  Wolfram Sang <wsa+renesas@sang-engineering.com>
| 2024-04-26 08:44:08 +0200 |
|---|---|---|
| committer | Wolfram Sang <wsa+renesas@sang-engineering.com>
| 2024-04-27 12:57:57 +0200 |
| commit | 91811a31b68d3765b3065f4bb6d7d6d84a7cfc9f (patch) | |
| tree | 1c93b8e3eed29c8ee9d4ac0cef00f1d8a7f9f275 /Documentation | |
| parent | MAINTAINERS: Drop entry for PCA9541 bus master selector (diff) | |
| download | linux-91811a31b68d3765b3065f4bb6d7d6d84a7cfc9f.tar.gz linux-91811a31b68d3765b3065f4bb6d7d6d84a7cfc9f.tar.bz2 linux-91811a31b68d3765b3065f4bb6d7d6d84a7cfc9f.zip | |
i2c: smbus: fix NULL function pointer dereference
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>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions