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| author | Alexey Dobriyan <adobriyan@gmail.com> | 2006-11-14 03:12:08 +0300 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-12-03 08:22:25 +0300 |
| commit | 5f3f24faf322e54752d1df00cdb768a013de5d1f (patch) | |
| tree | 81a8bf76d9165d3f0798f2cbd6cb967d35b54d3c /drivers/atm/ambassador.c | |
| parent | 2ee92d46c6cabedd50edf6f273fa8cf84f707618 (diff) | |
| download | linux-5f3f24faf322e54752d1df00cdb768a013de5d1f.tar.xz | |
[ATM] ambassador,firestream: "-1 >>" is implementation defined
6.5.7(5): The result of E1 >> E2 is E1 right-shifted E2 bit positions.
...
If E1 has a signed type and a negative value, the resulting value
is implementation defined.
So, cast -1 to unsigned type to make result well-defined.
[ Modified to use ~0U based upon recommendation from Al Viro. -DaveM ]
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/atm/ambassador.c')
| -rw-r--r-- | drivers/atm/ambassador.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/atm/ambassador.c b/drivers/atm/ambassador.c index 9fffa7af6db1..afa7d750a593 100644 --- a/drivers/atm/ambassador.c +++ b/drivers/atm/ambassador.c @@ -972,7 +972,7 @@ static int make_rate (unsigned int rate, rounding r, } case round_up: { // check all bits that we are discarding - if (man & (-1>>9)) { + if (man & (~0U>>9)) { man = (man>>(32-9)) + 1; if (man == (1<<9)) { // no need to check for round up outside of range |