From c21af7af790184233f34077985ff160fe6b07d64 Mon Sep 17 00:00:00 2001 From: Alexey Dobriyan Date: Wed, 21 Feb 2007 01:43:24 +0100 Subject: [PATCH] [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 Signed-off-by: Adrian Bunk --- drivers/atm/ambassador.c | 2 +- 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 4b6bf19c39c..15cb680b5ea 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 01eebd1ab80..75bc1eb2d52 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 */ -- 2.11.4.GIT