K 10
svn:author
V 6
scottl
K 8
svn:date
V 27
2006-09-13T15:48:15.000000Z
K 7
svn:log
V 455
Introduce a spinlock for synchronizing access to the video output hardware
in syscons.  This replaces a simple access semaphore that was assumed to be
protected by Giant but often was not.  If two threads that were otherwise
SMP-safe called printf at the same time, there was a high likelyhood that
the semaphore would get corrupted and result in a permanently frozen video
console.  This is similar to what is already done in the serial console
drivers.

END