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authorJörg Frings-Fürst <debian@jff-webhosting.net>2021-02-16 18:24:19 +0100
committerJörg Frings-Fürst <debian@jff-webhosting.net>2021-02-16 18:24:19 +0100
commit351b7328520c16730ceb46e5acae16038c42185e (patch)
treefae21fd5c94f3c3ed0202a95c9ada705482e647b /backend/gt68xx_low.c
parentad38bc6ecb80ddeb562841b33258dd53659b1da6 (diff)
New upstream version 1.0.32upstream/1.0.32
Diffstat (limited to 'backend/gt68xx_low.c')
-rw-r--r--backend/gt68xx_low.c24
1 files changed, 19 insertions, 5 deletions
diff --git a/backend/gt68xx_low.c b/backend/gt68xx_low.c
index 3ea4590..5aa84ac 100644
--- a/backend/gt68xx_low.c
+++ b/backend/gt68xx_low.c
@@ -16,9 +16,7 @@
General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- MA 02111-1307, USA.
+ along with this program. If not, see <https://www.gnu.org/licenses/>.
As a special exception, the authors of SANE give permission for
additional uses of the libraries contained in this release of SANE.
@@ -176,6 +174,8 @@ gt68xx_device_new (GT68xx_Device ** dev_return)
dev->manual_selection = SANE_FALSE;
+ dev->scan_started = SANE_FALSE;
+
#ifdef USE_FORK
dev->shm_channel = NULL;
#endif /* USE_FORK */
@@ -626,7 +626,14 @@ gt68xx_device_start_scan (GT68xx_Device * dev)
{
CHECK_DEV_ACTIVE (dev, "gt68xx_device_start_scan");
if (dev->model->command_set->start_scan)
- return (*dev->model->command_set->start_scan) (dev);
+ {
+ if (!dev->scan_started)
+ {
+ dev->scan_started = SANE_TRUE;
+ return (*dev->model->command_set->start_scan) (dev);
+ }
+ return SANE_STATUS_DEVICE_BUSY;
+ }
else
return SANE_STATUS_UNSUPPORTED;
}
@@ -681,7 +688,14 @@ gt68xx_device_stop_scan (GT68xx_Device * dev)
{
CHECK_DEV_ACTIVE (dev, "gt68xx_device_stop_scan");
if (dev->model->command_set->stop_scan)
- return (*dev->model->command_set->stop_scan) (dev);
+ {
+ if (dev->scan_started)
+ {
+ dev->scan_started = SANE_FALSE;
+ return (*dev->model->command_set->stop_scan) (dev);
+ }
+ return SANE_STATUS_GOOD; // Essentially a NOP.
+ }
else
return SANE_STATUS_UNSUPPORTED;
}