redonkable/alistair23-linux
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IB/ipath: Don't initialize port memory for subports

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A recent change was made to allocate memory for a port after CPU
affinity is set. That change didn't account for subports and was
trying to allocate memory for the port twice.

Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Ralph Campbell 2007-03-15 14:44:48 -07:00 committed by Roland Dreier
parent 1908574559
commit 947d7617a1
2 changed files with 17 additions and 4 deletions
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19
drivers/infiniband/hw/ipath/ipath_file_ops.c
View file

@ -178,8 +178,7 @@ static int ipath_get_base_info(struct file *fp,
kinfo->spi_rcvhdr_base = ((u64) pd->subport_rcvhdr_base +
pd->port_rcvhdrq_size * slave) & MMAP64_MASK;
kinfo->spi_rcvhdr_tailaddr =
(u64) pd->port_rcvhdrqtailaddr_phys & MMAP64_MASK;
kinfo->spi_rcvhdr_tailaddr = 0;
kinfo->spi_rcv_egrbufs = ((u64) pd->subport_rcvegrbuf +
dd->ipath_rcvegrcnt * dd->ipath_rcvegrbufsize * slave) &
MMAP64_MASK;
@ -1443,6 +1442,7 @@ static int init_subports(struct ipath_devdata *dd,
pd->port_subport_cnt = uinfo->spu_subport_cnt;
pd->port_subport_id = uinfo->spu_subport_id;
pd->active_slaves = 1;
set_bit(IPATH_PORT_MASTER_UNINIT, &pd->port_flag);
goto bail;
bail_rhdr:
@ -1764,11 +1764,17 @@ static int ipath_do_user_init(struct file *fp,
const struct ipath_user_info *uinfo)
{
int ret;
struct ipath_portdata *pd;
struct ipath_portdata *pd = port_fp(fp);
struct ipath_devdata *dd;
u32 head32;
pd = port_fp(fp);
/* Subports don't need to initialize anything since master did it. */
if (subport_fp(fp)) {
ret = wait_event_interruptible(pd->port_wait,
!test_bit(IPATH_PORT_MASTER_UNINIT, &pd->port_flag));
goto done;
}
dd = pd->port_dd;
if (uinfo->spu_rcvhdrsize) {
@ -1826,6 +1832,11 @@ static int ipath_do_user_init(struct file *fp,
dd->ipath_rcvctrl & ~INFINIPATH_R_TAILUPD);
ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvctrl,
dd->ipath_rcvctrl);
/* Notify any waiting slaves */
if (pd->port_subport_cnt) {
clear_bit(IPATH_PORT_MASTER_UNINIT, &pd->port_flag);
wake_up(&pd->port_wait);
}
done:
return ret;
}

2
drivers/infiniband/hw/ipath/ipath_kernel.h
View file

@ -701,6 +701,8 @@ int ipath_set_rx_pol_inv(struct ipath_devdata *dd, u8 new_pol_inv);
#define IPATH_PORT_WAITING_RCV 2
/* waiting for a PIO buffer to be available */
#define IPATH_PORT_WAITING_PIO 3
/* master has not finished initializing */
#define IPATH_PORT_MASTER_UNINIT 4
/* free up any allocated data at closes */
void ipath_free_data(struct ipath_portdata *dd);