From: Jason Wessel Date: Fri, 21 May 2010 02:04:22 +0000 (-0500) Subject: kgdb,8250,pl011: Return immediately from console poll X-Git-Tag: v2.6.35-rc1~453^2~15 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f5316b4aea024da9266d740322a5481657f6ce59;p=pandora-kernel.git kgdb,8250,pl011: Return immediately from console poll The design of the kdb shell requires that every device that can provide input to kdb have a polling routine that exits immediately if there is no character available. This is required in order to get the page scrolling mechanism working. Changing the kernel debugger I/O API to require all polling character routines to exit immediately if there is no data allows the kernel debugger to process multiple input channels. NO_POLL_CHAR will be the return code to the polling routine when ever there is no character available. CC: linux-serial@vger.kernel.org Signed-off-by: Jason Wessel --- Reading git-diff-tree failed