From 9f811b72c669e29f8c01e258d912254065e58f11 Mon Sep 17 00:00:00 2001 From: Bernie Thompson Date: Sun, 21 Aug 2011 13:35:38 -0700 Subject: udlfb: Enable fb_defio by default Enables page fault based detection of mmap writes to the framebuffer, which allows standard fbdev apps (like the generic fbdev xorg driver) to work on DisplayLink devices. Not all bugs are shaken out of the fb_defio path of udlfb, but it's tantalizingly close, so this seems a good time to enable by default. Alternatively, option can be disabled when running with an xorg driver that can more directly communicate damaged regions of the framebuffer via IOCTL. This is a simpler, higher perf option, when available. Signed-off-by: Bernie Thompson Signed-off-by: Florian Tobias Schandinat --- drivers/video/udlfb.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/video/udlfb.c') diff --git a/drivers/video/udlfb.c b/drivers/video/udlfb.c index 2341b275e815..2b694e1c73cb 100644 --- a/drivers/video/udlfb.c +++ b/drivers/video/udlfb.c @@ -61,7 +61,7 @@ MODULE_DEVICE_TABLE(usb, id_table); /* module options */ static int console; /* Optionally allow fbcon to consume first framebuffer */ -static int fb_defio; /* Optionally enable experimental fb_defio mmap support */ +static int fb_defio = 1; /* Detect mmap writes using page faults */ static int shadow = 1; /* Optionally disable shadow framebuffer */ /* dlfb keeps a list of urbs for efficient bulk transfers */ @@ -1951,7 +1951,7 @@ module_param(console, bool, S_IWUSR | S_IRUSR | S_IWGRP | S_IRGRP); MODULE_PARM_DESC(console, "Allow fbcon to consume first framebuffer found"); module_param(fb_defio, bool, S_IWUSR | S_IRUSR | S_IWGRP | S_IRGRP); -MODULE_PARM_DESC(fb_defio, "Enable fb_defio mmap support. *Experimental*"); +MODULE_PARM_DESC(fb_defio, "Page fault detection of mmap writes"); module_param(shadow, bool, S_IWUSR | S_IRUSR | S_IWGRP | S_IRGRP); MODULE_PARM_DESC(shadow, "Shadow vid mem. Disable to save mem but lose perf"); -- cgit v1.2.1