diff options
| author | Alexey Dobriyan <adobriyan@gmail.com> | 2007-02-21 01:43:24 +0100 |
|---|---|---|
| committer | Adrian Bunk <bunk@stusta.de> | 2007-02-21 01:43:24 +0100 |
| commit | c21af7af790184233f34077985ff160fe6b07d64 (patch) | |
| tree | df4a83b4ab526f8b7bf736c46c00f3b9420098ba | |
| parent | 379efed186cb110913caa2014bf6cbc396e1fefb (diff) | |
[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: Adrian Bunk <bunk@stusta.de>
| -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 4b6bf19c39c0..15cb680b5ea4 100644 --- a/drivers/atm/ambassador.c +++ b/drivers/atm/ambassador.c @@ -978,7 +978,7 @@ static unsigned 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 01eebd1ab80d..75bc1eb2d526 100644 --- a/drivers/atm/firestream.c +++ b/drivers/atm/firestream.c @@ -511,7 +511,7 @@ 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 */ |