[PATCH] drivers: fpga: intel_sdm_mb: Check SIP SMC status in send_bitstream()

[Naresh Kumar Ravulapalli]

While sending bitstream via SIP SMC, busy status received does not
correspond to error, instead it means transfer is accepted but SDM
doesn't have any more free buffer space. Hence, data transmission
is continued when busy status is received.

Signed-off-by: Naresh Kumar Ravulapalli <nareshkumar.ravulapalli at altera.com>
---
 drivers/fpga/intel_sdm_mb.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/fpga/intel_sdm_mb.c b/drivers/fpga/intel_sdm_mb.c
index a2f3b160a73..5f4aae47d6d 100644
--- a/drivers/fpga/intel_sdm_mb.c
+++ b/drivers/fpga/intel_sdm_mb.c
@@ -687,7 +687,8 @@ static int send_bitstream(const void *rbf_data, size_t rbf_size)
 			debug("wr_ret = %d, rbf_data = %p, buf_size = %08lx\n",
 			      wr_ret, rbf_data, buf_size);
 
-			if (wr_ret)
+			if (wr_ret != INTEL_SIP_SMC_STATUS_OK &&
+			    wr_ret != INTEL_SIP_SMC_STATUS_BUSY)
 				continue;
 
 			rbf_size -= buf_size;
-- 
2.35.3