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| author | nwhitehorn <nwhitehorn@FreeBSD.org> | 2011-06-23 04:35:45 +0000 |
|---|---|---|
| committer | nwhitehorn <nwhitehorn@FreeBSD.org> | 2011-06-23 04:35:45 +0000 |
| commit | 6d4918e45e29c8527fe3383af8f33ef6ed977e35 (patch) | |
| tree | 96caa0b0bc52f149e1c9f7b542b967489b0a21e8 /sys/dev/usb/template/usb_template_modem.c | |
| parent | b51f0413bb9eea9e7f306823369257ccace21801 (diff) | |
| download | FreeBSD-src-6d4918e45e29c8527fe3383af8f33ef6ed977e35.zip FreeBSD-src-6d4918e45e29c8527fe3383af8f33ef6ed977e35.tar.gz | |
Use atomic operations to mask and unmask IRQs. This prevents a problem
(obvious in retrospect) in which interrupts on one CPU that are temporarily
masked can end up permanently masked when a handler on another CPU clobbers
the interrupt mask register with an old copy.
Diffstat (limited to 'sys/dev/usb/template/usb_template_modem.c')
0 files changed, 0 insertions, 0 deletions
