Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  Fix Xilinx SystemACE driver to handle empty CF slot
  block: fix memory leak in bio_clone()
  block: Add gfp_mask parameter to bio_integrity_clone()

1 files changed, 22 insertions, 0 deletions

diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c
index 381d686fc1a3..119be3442f28 100644
--- a/drivers/block/xsysace.c
+++ b/drivers/block/xsysace.c
@@ -489,6 +489,28 @@ static void ace_fsm_dostate(struct ace_device *ace)
                 ace->fsm_state, ace->id_req_count);
 #endif
 
+        /* Verify that there is actually a CF in the slot. If not, then
+         * bail out back to the idle state and wake up all the waiters */
+        status = ace_in32(ace, ACE_STATUS);
+        if ((status & ACE_STATUS_CFDETECT) == 0) {
+                ace->fsm_state = ACE_FSM_STATE_IDLE;
+                ace->media_change = 1;
+                set_capacity(ace->gd, 0);
+                dev_info(ace->dev, "No CF in slot\n");
+
+                /* Drop all pending requests */
+                while ((req = elv_next_request(ace->queue)) != NULL)
+                        end_request(req, 0);
+
+                /* Drop back to IDLE state and notify waiters */
+                ace->fsm_state = ACE_FSM_STATE_IDLE;
+                ace->id_result = -EIO;
+                while (ace->id_req_count) {
+                        complete(&ace->id_completion);
+                        ace->id_req_count--;
+                }
+        }
+
         switch (ace->fsm_state) {
         case ACE_FSM_STATE_IDLE:
                 /* See if there is anything to do */