diff options
| author | jhb <jhb@FreeBSD.org> | 2001-03-07 03:37:06 +0000 |
|---|---|---|
| committer | jhb <jhb@FreeBSD.org> | 2001-03-07 03:37:06 +0000 |
| commit | 9cd254601baefc2dc9c953abe9747717374ff8b1 (patch) | |
| tree | ac4298224e8af28e8b2f904a43a2925c21dfc798 /sys/dev/usb/usb.c | |
| parent | ace71d59bf35fa6d911520ec855d0100773422a8 (diff) | |
| download | FreeBSD-src-9cd254601baefc2dc9c953abe9747717374ff8b1.zip FreeBSD-src-9cd254601baefc2dc9c953abe9747717374ff8b1.tar.gz | |
Grab the process lock while calling psignal and before calling psignal.
Diffstat (limited to 'sys/dev/usb/usb.c')
| -rw-r--r-- | sys/dev/usb/usb.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/sys/dev/usb/usb.c b/sys/dev/usb/usb.c index f917d1f..5382ec0 100644 --- a/sys/dev/usb/usb.c +++ b/sys/dev/usb/usb.c @@ -51,13 +51,13 @@ #if defined(__NetBSD__) || defined(__OpenBSD__) #include <sys/device.h> #include <sys/kthread.h> -#include <sys/proc.h> #elif defined(__FreeBSD__) #include <sys/module.h> #include <sys/bus.h> #include <sys/filio.h> #include <sys/uio.h> #endif +#include <sys/proc.h> #include <sys/conf.h> #include <sys/poll.h> #if __FreeBSD_version >= 500014 @@ -683,8 +683,11 @@ usbd_add_event(type, dev) SIMPLEQ_INSERT_TAIL(&usb_events, ueq, next); wakeup(&usb_events); selwakeup(&usb_selevent); - if (usb_async_proc != NULL) + if (usb_async_proc != NULL) { + PROC_LOCK(usb_async_proc); psignal(usb_async_proc, SIGIO); + PROC_UNLOCK(usb_async_proc); + } splx(s); } |
