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IB/ipath: Remove dead code for user process waiting for send buffer

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At one point in time there was code to allow a user process to
wait for a send buffer if none were available. This feature was
never used and most of the code was removed. This removes
some missed unused code.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Ralph Campbell 2007-10-12 20:48:06 -07:00 committed by Roland Dreier
parent 457fe7b8a6
commit 9ab4295d1d
2 changed files with 0 additions and 30 deletions
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26
drivers/infiniband/hw/ipath/ipath_intr.c
View File

@ -920,29 +920,6 @@ static noinline void ipath_bad_regread(struct ipath_devdata *dd)
}
}
static void handle_port_pioavail(struct ipath_devdata *dd)
{
u32 i;
/*
* start from port 1, since for now port 0 is never using
* wait_event for PIO
*/
for (i = 1; dd->ipath_portpiowait && i < dd->ipath_cfgports; i++) {
struct ipath_portdata *pd = dd->ipath_pd[i];
if (pd && pd->port_cnt &&
dd->ipath_portpiowait & (1U << i)) {
clear_bit(i, &dd->ipath_portpiowait);
if (test_bit(IPATH_PORT_WAITING_PIO,
&pd->port_flag)) {
clear_bit(IPATH_PORT_WAITING_PIO,
&pd->port_flag);
wake_up_interruptible(&pd->port_wait);
}
}
}
}
static void handle_layer_pioavail(struct ipath_devdata *dd)
{
int ret;
@ -1195,9 +1172,6 @@ irqreturn_t ipath_intr(int irq, void *data)
ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl,
dd->ipath_sendctrl);
if (dd->ipath_portpiowait)
handle_port_pioavail(dd);
handle_layer_pioavail(dd);
}

4
drivers/infiniband/hw/ipath/ipath_kernel.h
View File

@ -457,8 +457,6 @@ struct ipath_devdata {
unsigned long ipath_rcvctrl;
/* shadow kr_sendctrl */
unsigned long ipath_sendctrl;
/* ports waiting for PIOavail intr */
unsigned long ipath_portpiowait;
unsigned long ipath_lastcancel; /* to not count armlaunch after cancel */
/* value we put in kr_rcvhdrcnt */
@ -759,8 +757,6 @@ int ipath_set_rx_pol_inv(struct ipath_devdata *dd, u8 new_pol_inv);
/* portdata flag bit offsets */
/* waiting for a packet to arrive */
#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
/* waiting for an urgent packet to arrive */