diff options
Diffstat (limited to 'drivers/infiniband/hw/qib/qib_wc_x86_64.c')
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_wc_x86_64.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/qib/qib_wc_x86_64.c b/drivers/infiniband/hw/qib/qib_wc_x86_64.c index 1d7281c5a02e..81b225f2300a 100644 --- a/drivers/infiniband/hw/qib/qib_wc_x86_64.c +++ b/drivers/infiniband/hw/qib/qib_wc_x86_64.c @@ -72,6 +72,7 @@ int qib_enable_wc(struct qib_devdata *dd) if (dd->piobcnt2k && dd->piobcnt4k) { /* 2 sizes for chip */ unsigned long pio2kbase, pio4kbase; + pio2kbase = dd->piobufbase & 0xffffffffUL; pio4kbase = (dd->piobufbase >> 32) & 0xffffffffUL; if (pio2kbase < pio4kbase) { @@ -91,7 +92,7 @@ int qib_enable_wc(struct qib_devdata *dd) } for (bits = 0; !(piolen & (1ULL << bits)); bits++) - /* do nothing */ ; + ; /* do nothing */ if (piolen != (1ULL << bits)) { piolen >>= bits; @@ -100,8 +101,8 @@ int qib_enable_wc(struct qib_devdata *dd) piolen = 1ULL << (bits + 1); } if (pioaddr & (piolen - 1)) { - u64 atmp; - atmp = pioaddr & ~(piolen - 1); + u64 atmp = pioaddr & ~(piolen - 1); + if (atmp < addr || (atmp + piolen) > (addr + len)) { qib_dev_err(dd, "No way to align address/size (%llx/%llx), no WC mtrr\n", |