based on commit 6ff1f3d3bd7c69c62ca5773b1b684bce42eff06a.
On TI81xx, tx and rx interrupt are detected together with
the disconnect event. This generates a kernel panic in musb_interrupt,
because rx / tx are handled after disconnect.
Signed-off-by: Shane Whalen <swhalen@xxxxxxxxxxxxxxxx>
---
drivers/usb/musb/musb_dsps.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c
index 6bb8971..afa5ee1 100644
--- a/drivers/usb/musb/musb_dsps.c
+++ b/drivers/usb/musb/musb_dsps.c
@@ -383,6 +383,12 @@ static irqreturn_t dsps_interrupt(int irq, void *hci)
ret = IRQ_HANDLED;
}
+ /* Drop spurious RX and TX if device is disconnected */
+ if (musb->int_usb & MUSB_INTR_DISCONNECT) {
+ musb->int_tx = 0;
+ musb->int_rx = 0;
+ }
+
if (musb->int_tx || musb->int_rx || musb->int_usb)
ret |= musb_interrupt(musb);
--
1.7.9.5
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