path: root/include/video
diff options
authorMikulas Patocka <mpatocka@redhat.com>2018-07-25 15:41:55 +0200
committerBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>2018-07-25 15:41:55 +0200
commit2c29cfc3eaf11779176bf41475cfca49bccba11c (patch)
tree8006c93072ddf1325ba670c60f007007d9d223dd /include/video
parent564f1807379298dfdb12ed0d5b25fcb89c238527 (diff)
udlfb: make a local copy of fb_ops
The defio subsystem overwrites the method fb_osp->mmap. That method is stored in module's static data - and that means that if we have multiple diplaylink adapters, they will over write each other's method. In order to avoid interference between multiple adapters, we copy the fb_ops structure to a device-local memory. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Diffstat (limited to 'include/video')
1 files changed, 1 insertions, 0 deletions
diff --git a/include/video/udlfb.h b/include/video/udlfb.h
index bc2e9cf34aa5..b4f43d3ac1af 100644
--- a/include/video/udlfb.h
+++ b/include/video/udlfb.h
@@ -51,6 +51,7 @@ struct dlfb_data {
int base8;
u32 pseudo_palette[256];
int blank_mode; /*one of FB_BLANK_ */
+ struct fb_ops ops;
/* blit-only rendering path metrics, exposed through sysfs */
atomic_t bytes_rendered; /* raw pixel-bytes driver asked to render */
atomic_t bytes_identical; /* saved effort with backbuffer comparison */

Privacy Policy