linux/drivers/infiniband
Mike Marciniszyn d61ea0751a IB/hfi1: Fix a wrapping test to insure the correct timeout
The "2 * UINT_MAX"  statement:
	if ((u64)(ts - cce->timestamp) > 2 * UINT_MAX) {

is equivalent to:
	if ((u64)(ts - cce->timestamp) > UINT_MAX - 1) {

This results in a premature timeout of the cong log entry.

Fix by using unsigned 64 bit integers, removing casts, and using
an algebraic equivalent test to avoid the "2 * UINT_MAX" issue.

Also make use of kernel API to get nanoseconds instead of
open coding.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-11-13 15:53:57 -05:00
..
core IB/core: Avoid unnecessary return value check 2017-11-13 14:42:04 -05:00
hw IB/hfi1: Fix a wrapping test to insure the correct timeout 2017-11-13 15:53:57 -05:00
sw IB/rxe: don't crash, if allocation of crc algorithm failed 2017-11-10 13:43:50 -05:00
ulp IB/srpt: Ensure that modifying the use_srq configfs attribute works 2017-11-13 15:25:16 -05:00
Kconfig infiniband: add MMU dependency for user_mem 2017-10-10 10:49:44 -04:00
Makefile IB/rdmavt: Create module framework and handle driver registration 2016-03-10 20:37:04 -05:00