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| author | Alexey Dobriyan <adobriyan@gmail.com> | 2006-11-13 16:12:08 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-12-02 21:22:25 -0800 |
| commit | 5f3f24faf322e54752d1df00cdb768a013de5d1f (patch) | |
| tree | 81a8bf76d9165d3f0798f2cbd6cb967d35b54d3c | |
| parent | 2ee92d46c6cabedd50edf6f273fa8cf84f707618 (diff) | |
| download | linux-5f3f24faf322e54752d1df00cdb768a013de5d1f.tar.gz linux-5f3f24faf322e54752d1df00cdb768a013de5d1f.tar.bz2 linux-5f3f24faf322e54752d1df00cdb768a013de5d1f.zip | |
[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>
| -rw-r--r-- | drivers/atm/ambassador.c | 2 | ||||
| -rw-r--r-- | drivers/atm/firestream.c | 2 |
2 files changed, 2 insertions, 2 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 diff --git a/drivers/atm/firestream.c b/drivers/atm/firestream.c index 697ad82f6634..9c67df5ccfa4 100644 --- a/drivers/atm/firestream.c +++ b/drivers/atm/firestream.c @@ -512,7 +512,7 @@ static unsigned int make_rate (unsigned int rate, int 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 */ |