Messages in this thread Patch in this message | | | From | Rodolfo Giometti <> | Subject | [PATCH 1/2] include/uapi pps.h: increase PPS_MAX_SOURCES value | Date | Fri, 30 Jun 2023 09:18:25 +0200 |
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From: Charlie Johnston <charlie.johnston@ni.com>
For consistency with what others use for minors, this change sets PPS_MAX_SOURCES to MINORMASK.
The PPS_MAX_SOURCES value is currently set to 16. In some cases this was not sufficient for a system. For example, a system with multiple (4+) PCIe cards each with 4 PTP-capable ethernet interfaces could run out of the available PPS major:minors if each interface registers a PPS source.
Signed-off-by: Charlie Johnston <charlie.johnston@ni.com> Acked-by: Rodolfo Giometti <giometti@enneenne.com> --- include/uapi/linux/pps.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/uapi/linux/pps.h b/include/uapi/linux/pps.h index 009ebcd8ced5..90f2e86020ba 100644 --- a/include/uapi/linux/pps.h +++ b/include/uapi/linux/pps.h @@ -26,7 +26,7 @@ #include <linux/types.h> #define PPS_VERSION "5.3.6" -#define PPS_MAX_SOURCES 16 /* should be enough... */ +#define PPS_MAX_SOURCES MINORMASK /* Implementation note: the logical states ``assert'' and ``clear'' * are implemented in terms of the chip register, i.e. ``assert'' -- 2.34.1
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