diff options
| -rw-r--r-- | firmware/target/arm/usb-drv-arc.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/firmware/target/arm/usb-drv-arc.c b/firmware/target/arm/usb-drv-arc.c index 3093120..a2f8819 100644 --- a/firmware/target/arm/usb-drv-arc.c +++ b/firmware/target/arm/usb-drv-arc.c @@ -645,6 +645,7 @@ static int prime_transfer(int endpoint, void* ptr, int len, bool send, bool wait static long last_tick; struct transfer_descriptor* new_td; + int oldlevel = disable_irq_save(); /* if (send && endpoint > EP_CONTROL) { logf("usb: sent %d bytes", len); @@ -696,6 +697,8 @@ static int prime_transfer(int endpoint, void* ptr, int len, bool send, bool wait goto pt_error; } + restore_irq(oldlevel); + if (wait) { /* wait for transfer to finish */ wakeup_wait(&transfer_completion_signal[pipe], TIMEOUT_BLOCK); @@ -708,6 +711,9 @@ static int prime_transfer(int endpoint, void* ptr, int len, bool send, bool wait } pt_error: + if(rc<0) + restore_irq(oldlevel); + /* Error status must make sure an abandoned wakeup signal isn't left */ if (rc < 0 && wait) { /* Cancel wait */ |