diff options
| author |   Wolfram Sang <wsa+renesas@sang-engineering.com> | 2019-03-12 13:44:42 +0100 |
|---|---|---|
| committer |   Wolfram Sang <wsa@the-dreams.de> | 2019-03-13 18:03:26 +0100 |
| commit | bf263c35b2ebe7f1674205f6b36487250299b5a7 (patch) | |
| tree | d281179a1dfafd96a655cd4234e1238179973113 /drivers/i2c/busses/i2c-designware-platdrv.c | |
| parent | i2c: i2c-stm32f7: Fix SDADEL minimum formula (diff) | |
| download | linux-dev-bf263c35b2ebe7f1674205f6b36487250299b5a7.tar.xz linux-dev-bf263c35b2ebe7f1674205f6b36487250299b5a7.zip | |
i2c: add extra check to safe DMA buffer helper
Make sure we report 'no buffer' for 0-length messages. This can only
happen if threshold is set to 0 which is kind of bogus but we should
still handle this situation. Update the docs and add a debug message
to educate callers of this function.
Reported-by: Hsin-Yi Wang <hsinyi@chromium.org>
Fixes: e94bc5d18be0 ("i2c: add helpers to ease DMA handling")
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Hsin-Yi Wang <hsinyi@chromium.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions