qdio: support forced signal adapter indications
This patch ensures that signal adapter commands are issued if they are
indicated to be required.
Signed-off-by: Einar Lueck <elelueck@de.ibm.com>
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h
index 2b21f65..3dd8644 100644
--- a/drivers/s390/cio/qdio.h
+++ b/drivers/s390/cio/qdio.h
@@ -87,15 +87,6 @@
#define CHSC_FLAG_QDIO_CAPABILITY 0x80
#define CHSC_FLAG_VALIDITY 0x40
-/* qdio adapter-characteristics-1 flag */
-#define AC1_SIGA_INPUT_NEEDED 0x40 /* process input queues */
-#define AC1_SIGA_OUTPUT_NEEDED 0x20 /* process output queues */
-#define AC1_SIGA_SYNC_NEEDED 0x10 /* ask hypervisor to sync */
-#define AC1_AUTOMATIC_SYNC_ON_THININT 0x08 /* set by hypervisor */
-#define AC1_AUTOMATIC_SYNC_ON_OUT_PCI 0x04 /* set by hypervisor */
-#define AC1_SC_QEBSM_AVAILABLE 0x02 /* available for subchannel */
-#define AC1_SC_QEBSM_ENABLED 0x01 /* enabled for subchannel */
-
/* SIGA flags */
#define QDIO_SIGA_WRITE 0x00
#define QDIO_SIGA_READ 0x01
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index a7153f2..9a12228 100644
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -1592,12 +1592,9 @@
used = atomic_add_return(count, &q->nr_buf_used) - count;
BUG_ON(used + count > QDIO_MAX_BUFFERS_PER_Q);
- /* no need to signal as long as the adapter had free buffers */
- if (used)
- return 0;
-
if (need_siga_in(q))
return qdio_siga_input(q);
+
return 0;
}