diff options
| -rw-r--r-- | drivers/usb/host/whci/asl.c | 21 | ||||
| -rw-r--r-- | drivers/usb/host/whci/pzl.c | 21 | ||||
| -rw-r--r-- | drivers/usb/wusbcore/devconnect.c | 24 | ||||
| -rw-r--r-- | drivers/usb/wusbcore/mmc.c | 37 |
4 files changed, 72 insertions, 31 deletions
diff --git a/drivers/usb/host/whci/asl.c b/drivers/usb/host/whci/asl.c index 4d7078e50572..ba99a7a3f81a 100644 --- a/drivers/usb/host/whci/asl.c +++ b/drivers/usb/host/whci/asl.c @@ -179,11 +179,26 @@ void asl_stop(struct whc *whc) 1000, "stop ASL"); } +/** + * asl_update - request an ASL update and wait for the hardware to be synced + * @whc: the WHCI HC + * @wusbcmd: WUSBCMD value to start the update. + * + * If the WUSB HC is inactive (i.e., the ASL is stopped) then the + * update must be skipped as the hardware may not respond to update + * requests. + */ void asl_update(struct whc *whc, uint32_t wusbcmd) { - whc_write_wusbcmd(whc, wusbcmd, wusbcmd); - wait_event(whc->async_list_wq, - (le_readl(whc->base + WUSBCMD) & WUSBCMD_ASYNC_UPDATED) == 0); + struct wusbhc *wusbhc = &whc->wusbhc; + + mutex_lock(&wusbhc->mutex); + if (wusbhc->active) { + whc_write_wusbcmd(whc, wusbcmd, wusbcmd); + wait_event(whc->async_list_wq, + (le_readl(whc->base + WUSBCMD) & WUSBCMD_ASYNC_UPDATED) == 0); + } + mutex_unlock(&wusbhc->mutex); } /** diff --git a/drivers/usb/host/whci/pzl.c b/drivers/usb/host/whci/pzl.c index 8d62df0c330b..34d3a0aeab2b 100644 --- a/drivers/usb/host/whci/pzl.c +++ b/drivers/usb/host/whci/pzl.c @@ -195,11 +195,26 @@ void pzl_stop(struct whc *whc) 1000, "stop PZL"); } +/** + * pzl_update - request a PZL update and wait for the hardware to be synced + * @whc: the WHCI HC + * @wusbcmd: WUSBCMD value to start the update. + * + * If the WUSB HC is inactive (i.e., the PZL is stopped) then the + * update must be skipped as the hardware may not respond to update + * requests. + */ void pzl_update(struct whc *whc, uint32_t wusbcmd) { - whc_write_wusbcmd(whc, wusbcmd, wusbcmd); - wait_event(whc->periodic_list_wq, - (le_readl(whc->base + WUSBCMD) & WUSBCMD_PERIODIC_UPDATED) == 0); + struct wusbhc *wusbhc = &whc->wusbhc; + + mutex_lock(&wusbhc->mutex); + if (wusbhc->active) { + whc_write_wusbcmd(whc, wusbcmd, wusbcmd); + wait_event(whc->periodic_list_wq, + (le_readl(whc->base + WUSBCMD) & WUSBCMD_PERIODIC_UPDATED) == 0); + } + mutex_unlock(&wusbhc->mutex); } static void update_pzl_hw_view(struct whc *whc) diff --git a/drivers/usb/wusbcore/devconnect.c b/drivers/usb/wusbcore/devconnect.c index 08a1ec903867..26cbc89ea281 100644 --- a/drivers/usb/wusbcore/devconnect.c +++ b/drivers/usb/wusbcore/devconnect.c @@ -484,21 +484,15 @@ static void __wusbhc_keep_alive(struct wusbhc *wusbhc) */ static void wusbhc_keep_alive_run(struct work_struct *ws) { - struct delayed_work *dw = - container_of(ws, struct delayed_work, work); - struct wusbhc *wusbhc = - container_of(dw, struct wusbhc, keep_alive_timer); - - d_fnstart(5, wusbhc->dev, "(wusbhc %p)\n", wusbhc); - if (wusbhc->active) { - mutex_lock(&wusbhc->mutex); - __wusbhc_keep_alive(wusbhc); - mutex_unlock(&wusbhc->mutex); - queue_delayed_work(wusbd, &wusbhc->keep_alive_timer, - (wusbhc->trust_timeout * CONFIG_HZ)/1000/2); - } - d_fnend(5, wusbhc->dev, "(wusbhc %p) = void\n", wusbhc); - return; + struct delayed_work *dw = container_of(ws, struct delayed_work, work); + struct wusbhc *wusbhc = container_of(dw, struct wusbhc, keep_alive_timer); + + mutex_lock(&wusbhc->mutex); + __wusbhc_keep_alive(wusbhc); + mutex_unlock(&wusbhc->mutex); + + queue_delayed_work(wusbd, &wusbhc->keep_alive_timer, + msecs_to_jiffies(wusbhc->trust_timeout / 2)); } /* diff --git a/drivers/usb/wusbcore/mmc.c b/drivers/usb/wusbcore/mmc.c index 5463ecebafdf..3b52161e6e9c 100644 --- a/drivers/usb/wusbcore/mmc.c +++ b/drivers/usb/wusbcore/mmc.c @@ -159,6 +159,27 @@ found: } EXPORT_SYMBOL_GPL(wusbhc_mmcie_rm); +static int wusbhc_mmc_start(struct wusbhc *wusbhc) +{ + int ret; + + mutex_lock(&wusbhc->mutex); + ret = wusbhc->start(wusbhc); + if (ret >= 0) + wusbhc->active = 1; + mutex_unlock(&wusbhc->mutex); + + return ret; +} + +static void wusbhc_mmc_stop(struct wusbhc *wusbhc) +{ + mutex_lock(&wusbhc->mutex); + wusbhc->active = 0; + wusbhc->stop(wusbhc, WUSB_CHANNEL_STOP_DELAY_MS); + mutex_unlock(&wusbhc->mutex); +} + /* * wusbhc_start - start transmitting MMCs and accepting connections * @wusbhc: the HC to start @@ -198,12 +219,12 @@ int wusbhc_start(struct wusbhc *wusbhc) dev_err(dev, "Cannot set DNTS parameters: %d\n", result); goto error_set_num_dnts; } - result = wusbhc->start(wusbhc); + result = wusbhc_mmc_start(wusbhc); if (result < 0) { dev_err(dev, "error starting wusbch: %d\n", result); goto error_wusbhc_start; } - wusbhc->active = 1; + return 0; error_wusbhc_start: @@ -225,15 +246,11 @@ error_rsv_establish: */ void wusbhc_stop(struct wusbhc *wusbhc) { - if (wusbhc->active) { - wusbhc->active = 0; - wusbhc->stop(wusbhc, WUSB_CHANNEL_STOP_DELAY_MS); - wusbhc_sec_stop(wusbhc); - wusbhc_devconnect_stop(wusbhc); - wusbhc_rsv_terminate(wusbhc); - } + wusbhc_mmc_stop(wusbhc); + wusbhc_sec_stop(wusbhc); + wusbhc_devconnect_stop(wusbhc); + wusbhc_rsv_terminate(wusbhc); } -EXPORT_SYMBOL_GPL(wusbhc_stop); /* * Set/reset/update a new CHID |