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| author | Colin Ian King <colin.king@canonical.com> | 2018-02-15 19:36:14 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-05-30 07:49:14 +0200 |
| commit | cf4c7b3ab661a2d3a6aa237211edea81ebcdc8ab (patch) | |
| tree | a599b815cc61121bb93d9dfba667412950f1aea0 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | cc1cf4acb8ade6dc16f870751b07f356bfd5a017 (diff) | |
rtc: tx4939: avoid unintended sign extension on a 24 bit shift
[ Upstream commit 347876ad47b9923ce26e686173bbf46581802ffa ]
The shifting of buf[5] by 24 bits to the left will be promoted to
a 32 bit signed int and then sign-extended to an unsigned long. If
the top bit of buf[5] is set then all then all the upper bits sec
end up as also being set because of the sign-extension. Fix this by
casting buf[5] to an unsigned long before the shift.
Detected by CoverityScan, CID#1465292 ("Unintended sign extension")
Fixes: 0e1492330cd2 ("rtc: add rtc-tx4939 driver")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions