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staging: brcm80211: stop using assigned thread priority in fullmac

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Stop assigning priority to watchdog and dpc threads. Remove related
code.

Reviewed-by: Arend van Spriel <arend@broadcom.com>
Reviewed-by: Roland Vossen <rvossen@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Franky Lin 2011-10-04 23:18:55 +02:00 committed by Greg Kroah-Hartman
parent a3b0b566cd
commit ef8299ddee
1 changed files with 5 additions and 55 deletions
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60
drivers/staging/brcm80211/brcmfmac/dhd_sdio.c
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@ -715,14 +715,6 @@ static int qcount[NUMPRIO];
static int tx_packets[NUMPRIO]; static int tx_packets[NUMPRIO];
#endif /* BCMDBG */ #endif /* BCMDBG */
/* Watchdog thread priority, -1 to use kernel timer */
int brcmf_watchdog_prio = 97;
module_param(brcmf_watchdog_prio, int, 0);
/* DPC thread priority, -1 to use tasklet */
int brcmf_dpc_prio = 98;
module_param(brcmf_dpc_prio, int, 0);
#define SDIO_DRIVE_STRENGTH 6 /* in milliamps */ #define SDIO_DRIVE_STRENGTH 6 /* in milliamps */
#define RETRYCHAN(chan) ((chan) == SDPCM_EVENT_CHANNEL) #define RETRYCHAN(chan) ((chan) == SDPCM_EVENT_CHANNEL)
@ -2692,16 +2684,6 @@ static int brcmf_sdbrcm_dpc_thread(void *data)
{ {
struct brcmf_bus *bus = (struct brcmf_bus *) data; struct brcmf_bus *bus = (struct brcmf_bus *) data;
/* This thread doesn't need any user-level access,
* so get rid of all our resources
*/
if (brcmf_dpc_prio > 0) {
struct sched_param param;
param.sched_priority = (brcmf_dpc_prio < MAX_RT_PRIO) ?
brcmf_dpc_prio : (MAX_RT_PRIO - 1);
sched_setscheduler(current, SCHED_FIFO, &param);
}
allow_signal(SIGTERM); allow_signal(SIGTERM);
/* Run until signal received */ /* Run until signal received */
while (1) { while (1) {
@ -4364,16 +4346,6 @@ brcmf_sdbrcm_watchdog_thread(void *data)
{ {
struct brcmf_bus *bus = (struct brcmf_bus *)data; struct brcmf_bus *bus = (struct brcmf_bus *)data;
/* This thread doesn't need any user-level access,
* so get rid of all our resources
*/
if (brcmf_watchdog_prio > 0) {
struct sched_param param;
param.sched_priority = (brcmf_watchdog_prio < MAX_RT_PRIO) ?
brcmf_watchdog_prio : (MAX_RT_PRIO - 1);
sched_setscheduler(current, SCHED_FIFO, &param);
}
allow_signal(SIGTERM); allow_signal(SIGTERM);
/* Run until signal received */ /* Run until signal received */
while (1) { while (1) {
@ -4394,7 +4366,7 @@ brcmf_sdbrcm_watchdog(unsigned long data)
{ {
struct brcmf_bus *bus = (struct brcmf_bus *)data; struct brcmf_bus *bus = (struct brcmf_bus *)data;
if (brcmf_watchdog_prio >= 0) { if (bus->threads_only) {
if (bus->watchdog_tsk) if (bus->watchdog_tsk)
complete(&bus->watchdog_wait); complete(&bus->watchdog_wait);
else else
@ -4493,6 +4465,7 @@ void *brcmf_sdbrcm_probe(u16 bus_no, u16 slot, u16 func, uint bustype,
bus->tx_seq = SDPCM_SEQUENCE_WRAP - 1; bus->tx_seq = SDPCM_SEQUENCE_WRAP - 1;
bus->usebufpool = false; /* Use bufpool if allocated, bus->usebufpool = false; /* Use bufpool if allocated,
else use locally malloced rxbuf */ else use locally malloced rxbuf */
bus->threads_only = true;
/* attempt to attach to the dongle */ /* attempt to attach to the dongle */
if (!(brcmf_sdbrcm_probe_attach(bus, regsva))) { if (!(brcmf_sdbrcm_probe_attach(bus, regsva))) {
@ -4510,14 +4483,9 @@ void *brcmf_sdbrcm_probe(u16 bus_no, u16 slot, u16 func, uint bustype,
bus->timer.function = brcmf_sdbrcm_watchdog; bus->timer.function = brcmf_sdbrcm_watchdog;
/* Initialize thread based operation and lock */ /* Initialize thread based operation and lock */
if ((brcmf_watchdog_prio >= 0) && (brcmf_dpc_prio >= 0)) { if (bus->threads_only) {
bus->threads_only = true;
sema_init(&bus->sdsem, 1); sema_init(&bus->sdsem, 1);
} else {
bus->threads_only = false;
}
if (brcmf_dpc_prio >= 0) {
/* Initialize watchdog thread */ /* Initialize watchdog thread */
init_completion(&bus->watchdog_wait); init_completion(&bus->watchdog_wait);
bus->watchdog_tsk = kthread_run(brcmf_sdbrcm_watchdog_thread, bus->watchdog_tsk = kthread_run(brcmf_sdbrcm_watchdog_thread,
@ -4527,11 +4495,6 @@ void *brcmf_sdbrcm_probe(u16 bus_no, u16 slot, u16 func, uint bustype,
"brcmf_watchdog thread failed to start\n"); "brcmf_watchdog thread failed to start\n");
bus->watchdog_tsk = NULL; bus->watchdog_tsk = NULL;
} }
} else
bus->watchdog_tsk = NULL;
/* Set up the bottom half handler */
if (brcmf_dpc_prio >= 0) {
/* Initialize DPC thread */ /* Initialize DPC thread */
init_completion(&bus->dpc_wait); init_completion(&bus->dpc_wait);
bus->dpc_tsk = kthread_run(brcmf_sdbrcm_dpc_thread, bus->dpc_tsk = kthread_run(brcmf_sdbrcm_dpc_thread,
@ -4542,9 +4505,10 @@ void *brcmf_sdbrcm_probe(u16 bus_no, u16 slot, u16 func, uint bustype,
bus->dpc_tsk = NULL; bus->dpc_tsk = NULL;
} }
} else { } else {
bus->watchdog_tsk = NULL;
bus->dpc_tsk = NULL;
tasklet_init(&bus->tasklet, brcmf_sdbrcm_dpc_tasklet, tasklet_init(&bus->tasklet, brcmf_sdbrcm_dpc_tasklet,
(unsigned long)bus); (unsigned long)bus);
bus->dpc_tsk = NULL;
} }
/* Attach to the brcmf/OS/network interface */ /* Attach to the brcmf/OS/network interface */
@ -4613,20 +4577,6 @@ int brcmf_bus_register(void)
{ {
brcmf_dbg(TRACE, "Enter\n"); brcmf_dbg(TRACE, "Enter\n");
/* Sanity check on the module parameters */
do {
/* Both watchdog and DPC as tasklets are ok */
if ((brcmf_watchdog_prio < 0) && (brcmf_dpc_prio < 0))
break;
/* If both watchdog and DPC are threads, TX must be deferred */
if (brcmf_watchdog_prio >= 0 && brcmf_dpc_prio >= 0)
break;
brcmf_dbg(ERROR, "Invalid module parameters.\n");
return -EINVAL;
} while (0);
return brcmf_sdio_register(); return brcmf_sdio_register();
} }