diff options
| author |   Bryan O'Sullivan <bos@pathscale.com> | 2007-03-15 14:44:56 -0700 |
|---|---|---|
| committer |   Roland Dreier <rolandd@cisco.com> | 2007-04-18 20:20:56 -0700 |
| commit | 614d49a21e96737f84b13f644ac813f8eb6d297a (patch) | |
| tree | 6a8389bcaf26f17d57a6720f84c3fe5b5887423d /drivers/infiniband/hw/ipath/ipath_intr.c | |
| parent | IB/ipath: Change packet problems vs chip errors handling and reporting (diff) | |
| download | linux-dev-614d49a21e96737f84b13f644ac813f8eb6d297a.tar.xz linux-dev-614d49a21e96737f84b13f644ac813f8eb6d297a.zip | |
IB/ipath: Fix bad argument to clear_bit()
Code was converted from a &= ~mask to clear_bit, but the bit was left
shifted instead of being used directly, so we were either trashing
memory several pages away, or sometimes taking a kernel page fault on
an invalid page.
Signed-off-by: Dave Olson <dave.olson@qlogic.com>
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_intr.c')
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_intr.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_intr.c b/drivers/infiniband/hw/ipath/ipath_intr.c index 037b8e276429..24853310df1c 100644 --- a/drivers/infiniband/hw/ipath/ipath_intr.c +++ b/drivers/infiniband/hw/ipath/ipath_intr.c @@ -842,11 +842,10 @@ static void handle_urcv(struct ipath_devdata *dd, u32 istat) struct ipath_portdata *pd = dd->ipath_pd[i]; if (portr & (1 << i) && pd && pd->port_cnt && test_bit(IPATH_PORT_WAITING_RCV, &pd->port_flag)) { - int rcbit; clear_bit(IPATH_PORT_WAITING_RCV, &pd->port_flag); - rcbit = i + INFINIPATH_R_INTRAVAIL_SHIFT; - clear_bit(1UL << rcbit, &dd->ipath_rcvctrl); + clear_bit(i + INFINIPATH_R_INTRAVAIL_SHIFT, + &dd->ipath_rcvctrl); wake_up_interruptible(&pd->port_wait); rcvdint = 1; } |