Commit 6a5464f2 authored Dec 08, 2015 by Mitko Haralanov Committed by Greg Kroah-Hartman Dec 21, 2015

staging/rdma/hfi1: Detect SDMA transmission error early



It is possible for an SDMA transmission error to happen
during the processing of an user SDMA transfer. In that
case it is better to detect it early and abort any further
attempts to send more packets.

Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent faa98b86

drivers/staging/rdma/hfi1/user_sdma.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -774,6 +774,12 @@ static int user_sdma_send_pkts(struct user_sdma_request *req, unsigned maxpkts)

		pq = req->pq;

		/* If tx completion has reported an error, we are done. */
		if (test_bit(SDMA_REQ_HAS_ERROR, &req->flags)) {
		set_bit(SDMA_REQ_DONE_ERROR, &req->flags);
		return -EFAULT;
		}

		/*
		* Check if we might have sent the entire request already
		*/