ukui/kernel
0
0
Fork 0
mirror of https://github.com/ukui/kernel.git synced 2026-03-09 10:07:04 -07:00
Code Issues Packages Projects Releases Wiki Activity

udlfb: fix hcd_buffer_free panic on unplug/replug

Browse Source 
Fix race conditions with unplug/replug behavior, in particular
take care not to hold up USB probe/disconnect for long-running
framebuffer operations and rely on usb to handle teardown.

Fix for kernel panic reported with new F17 multiseat support.

Reported-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Bernie Thompson <bernie@plugable.com>
This commit is contained in:
Bernie Thompson
2012-03-01 17:35:48 -08:00
parent 9daee73c81
commit 8d21547d3c
2 changed files with 81 additions and 66 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
include/video/udlfb.h
View File

@@ -41,6 +41,7 @@ struct dlfb_data {
char *backing_buffer;
int fb_count;
bool virtualized; /* true when physical usb device not present */
struct delayed_work init_framebuffer_work;
struct delayed_work free_framebuffer_work;
atomic_t usb_active; /* 0 = update virtual buffer, but no usb traffic */
atomic_t lost_pixels; /* 1 = a render op failed. Need screen refresh */