diff options
| author | hselasky <hselasky@FreeBSD.org> | 2014-01-22 07:48:39 +0000 |
|---|---|---|
| committer | hselasky <hselasky@FreeBSD.org> | 2014-01-22 07:48:39 +0000 |
| commit | 6fdccb82d0f189576d4724542976184be35b1fe4 (patch) | |
| tree | 6204c009ad033c9fe041cd9706a850da9e24e218 /sys/dev/usb/usb_freebsd.h | |
| parent | 4dfe3b9982102789352a57a7ea5e31a23f3d823d (diff) | |
| download | FreeBSD-src-6fdccb82d0f189576d4724542976184be35b1fe4.zip FreeBSD-src-6fdccb82d0f189576d4724542976184be35b1fe4.tar.gz | |
Ensure that the DMA delay does not get rounded down to zero ticks when
a timeout value of a single tick is given. With FreeBSD-10 and newer
the current system time is used as a starting point, and the minimum
callout time of a single tick will be guaranteed. This patch mostly
affect the DMA delay timeouts, which are typically in the range from
0.125 to 2ms.
MFC after: 1 week
Diffstat (limited to 'sys/dev/usb/usb_freebsd.h')
| -rw-r--r-- | sys/dev/usb/usb_freebsd.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sys/dev/usb/usb_freebsd.h b/sys/dev/usb/usb_freebsd.h index 0ae4533..8c806e7 100644 --- a/sys/dev/usb/usb_freebsd.h +++ b/sys/dev/usb/usb_freebsd.h @@ -50,6 +50,13 @@ #define USB_HAVE_FIXED_CONFIG 0 #define USB_HAVE_FIXED_PORT 0 +/* define zero ticks callout value */ +#if (__FreeBSD_version >= 1000029) +#define USB_CALLOUT_ZERO_TICKS 0 +#else +#define USB_CALLOUT_ZERO_TICKS 1 +#endif + #define USB_TD_GET_PROC(td) (td)->td_proc #define USB_PROC_GET_GID(td) (td)->p_pgid |
