staging: udlfb: fix incorrect fb_defio implementation for multiple framebuffers
Fix fb_defio bug in udlfb for multiple framebuffers
Previously when using fb_defio with multiple DisplayLink attached displays
udlfb incorrectly used a shared datastructure where it needed to have
one per fb_info struct. This was completely broken and caused all kinds of
problems, including rendering to one framebuffer affecting others.
Signed-off-by: Bernie Thompson <bernie@plugable.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/staging/udlfb/udlfb.h b/drivers/staging/udlfb/udlfb.h
index 58d2af6..6f9785e 100644
--- a/drivers/staging/udlfb/udlfb.h
+++ b/drivers/staging/udlfb/udlfb.h
@@ -19,6 +19,7 @@
struct urb_node {
struct list_head entry;
struct dlfb_data *dev;
+ struct delayed_work release_urb_work;
struct urb *urb;
};
@@ -87,6 +88,9 @@
#define MIN_RAW_PIX_BYTES 2
#define MIN_RAW_CMD_BYTES (RAW_HEADER_BYTES + MIN_RAW_PIX_BYTES)
+#define DL_DEFIO_WRITE_DELAY 5 /* fb_deferred_io.delay in jiffies */
+#define DL_DEFIO_WRITE_DISABLE (HZ*60) /* "disable" with long delay */
+
/* remove these once align.h patch is taken into kernel */
#define DL_ALIGN_UP(x, a) ALIGN(x, a)
#define DL_ALIGN_DOWN(x, a) ALIGN(x-(a-1), a)
