diff options
| author | Felipe Balbi <balbi@ti.com> | 2015-02-25 23:04:39 +0100 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2015-03-10 21:33:26 +0100 |
| commit | 52b9e6eb07f739207bd7d4257fdfbb24592d096a (patch) | |
| tree | 2921c1636644260bbfff9dee85e64228e1728a7e /drivers/usb | |
| parent | usb: musb: core: there is no connect interrupt in peripheral mode (diff) | |
| download | linux-52b9e6eb07f739207bd7d4257fdfbb24592d096a.tar.xz linux-52b9e6eb07f739207bd7d4257fdfbb24592d096a.zip | |
usb: musb: dsps: remove babble check from dsps irq handler
musb->int_usb already contains the correct
information for musb-core to handle babble.
In fact, this very check was just causing a
nonsensical babble interrupt storm.
With this I can get test.sh to run and, even though
all tests fail with timeout, that's still better
than locking up the system due to IRQ storm.
Also, if I remove g_zero and load g_mass_storage,
then everything works fine again.
Tested-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/musb/musb_core.c | 2 | ||||
| -rw-r--r-- | drivers/usb/musb/musb_dsps.c | 22 |
2 files changed, 1 insertions, 23 deletions
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 7ac69799a1db..d7730c7e7938 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -879,7 +879,7 @@ b_host: * the session. */ if (power & MUSB_POWER_HSMODE) { - ERR("Stopping host session -- babble\n"); + dev_err(musb->controller, "Babble\n"); musb_writeb(musb->mregs, MUSB_DEVCTL, 0); if (is_host_active(musb)) { diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c index af614f49cd98..8f96e79dd069 100644 --- a/drivers/usb/musb/musb_dsps.c +++ b/drivers/usb/musb/musb_dsps.c @@ -330,28 +330,6 @@ static irqreturn_t dsps_interrupt(int irq, void *hci) dev_dbg(musb->controller, "usbintr (%x) epintr(%x)\n", usbintr, epintr); - /* - * DRVVBUS IRQs are the only proxy we have (a very poor one!) for - * DSPS IP's missing ID change IRQ. We need an ID change IRQ to - * switch appropriately between halves of the OTG state machine. - * Managing DEVCTL.SESSION per Mentor docs requires that we know its - * value but DEVCTL.BDEVICE is invalid without DEVCTL.SESSION set. - * Also, DRVVBUS pulses for SRP (but not at 5V) ... - */ - if (is_host_active(musb) && usbintr & MUSB_INTR_BABBLE) { - pr_info("CAUTION: musb: Babble Interrupt Occurred\n"); - - /* - * When a babble condition occurs, the musb controller removes - * the session and is no longer in host mode. Hence, all - * devices connected to its root hub get disconnected. - * - * Hand this error down to the musb core isr, so it can - * recover. - */ - musb->int_usb = MUSB_INTR_BABBLE | MUSB_INTR_DISCONNECT; - musb->int_tx = musb->int_rx = 0; - } if (usbintr & ((1 << wrp->drvvbus) << wrp->usb_shift)) { int drvvbus = dsps_readl(reg_base, wrp->status); |