The function brcmf_sdbrcm_bus_stop() terminates the watchdog and dpc thread, but this function can be called from the dpc thread itself. Stopping the dpc thread is only done when it is not the 'current' thread.
Reviewed-by: Franky (Zhenhui) Lin <[email protected]> Reviewed-by: Roland Vossen <[email protected]> Signed-off-by: Arend van Spriel <[email protected]> --- drivers/staging/brcm80211/brcmfmac/dhd_sdio.c | 19 +++++++++++-------- 1 files changed, 11 insertions(+), 8 deletions(-) diff --git a/drivers/staging/brcm80211/brcmfmac/dhd_sdio.c b/drivers/staging/brcm80211/brcmfmac/dhd_sdio.c index 0f7b80d..6885755 100644 --- a/drivers/staging/brcm80211/brcmfmac/dhd_sdio.c +++ b/drivers/staging/brcm80211/brcmfmac/dhd_sdio.c @@ -2694,7 +2694,10 @@ static int brcmf_sdbrcm_dpc_thread(void *data) if (brcmf_sdbrcm_dpc(bus)) complete(&bus->dpc_wait); } else { + /* after stopping the bus, exit thread */ brcmf_sdbrcm_bus_stop(bus); + bus->dpc_tsk = NULL; + break; } } else break; @@ -3601,25 +3604,25 @@ void brcmf_sdbrcm_bus_stop(struct brcmf_bus *bus) brcmf_dbg(TRACE, "Enter\n"); - down(&bus->sdsem); - - bus_wake(bus); - - /* Enable clock for device interrupts */ - brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false); - if (bus->watchdog_tsk) { send_sig(SIGTERM, bus->watchdog_tsk, 1); kthread_stop(bus->watchdog_tsk); bus->watchdog_tsk = NULL; } - if (bus->dpc_tsk) { + if (bus->dpc_tsk && bus->dpc_tsk != current) { send_sig(SIGTERM, bus->dpc_tsk, 1); kthread_stop(bus->dpc_tsk); bus->dpc_tsk = NULL; } + down(&bus->sdsem); + + bus_wake(bus); + + /* Enable clock for device interrupts */ + brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false); + /* Disable and clear interrupts at the chip level also */ w_sdreg32(bus, 0, offsetof(struct sdpcmd_regs, hostintmask), &retries); local_hostintmask = bus->hostintmask; -- 1.7.4.1 _______________________________________________ devel mailing list [email protected] http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
