diff options
Diffstat (limited to 'drivers/gpu/drm/bochs')
| -rw-r--r-- | drivers/gpu/drm/bochs/bochs_hw.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/bochs/bochs_hw.c b/drivers/gpu/drm/bochs/bochs_hw.c index c90a0d492fd5..d0b4e1cee83e 100644 --- a/drivers/gpu/drm/bochs/bochs_hw.c +++ b/drivers/gpu/drm/bochs/bochs_hw.c @@ -86,9 +86,16 @@ static int bochs_get_edid_block(void *data, u8 *buf, int bochs_hw_load_edid(struct bochs_device *bochs) { + u8 header[8]; + if (!bochs->mmio) return -1; + /* check header to detect whenever edid support is enabled in qemu */ + bochs_get_edid_block(bochs, header, 0, ARRAY_SIZE(header)); + if (drm_edid_header_is_valid(header) != 8) + return -1; + kfree(bochs->edid); bochs->edid = drm_do_get_edid(&bochs->connector, bochs_get_edid_block, bochs); |