[RFC PATCH v4 3/6] fpga: xilinx: pass an address of xilinx_desc in fpga_desc

[Oleksandr Suvorov]

Pass an address of xilinx_desc pointer in an fpga_desc  to use parent
fpga_desc structure members inside a xilinx fpga driver.

Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov at foundries.io>
Tested-by: Ricardo Salveti <ricardo at foundries.io>
---

(no changes since v1)

 drivers/fpga/fpga.c   | 4 ++--
 drivers/fpga/xilinx.c | 4 +++-
 include/xilinx.h      | 2 +-
 3 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/fpga/fpga.c b/drivers/fpga/fpga.c
index 2266c7d83a4..781ab8bbef0 100644
--- a/drivers/fpga/fpga.c
+++ b/drivers/fpga/fpga.c
@@ -277,8 +277,8 @@ int fpga_load(int devnum, const void *buf, size_t bsize, bitstream_type bstype)
 		switch (desc->devtype) {
 		case fpga_xilinx:
 #if defined(CONFIG_FPGA_XILINX)
-			ret_val = xilinx_load(desc->devdesc, buf, bsize,
-					      bstype);
+			ret_val = xilinx_load((xilinx_desc **)&desc->devdesc,
+					      buf, bsize, bstype);
 #else
 			fpga_no_sup((char *)__func__, "Xilinx devices");
 #endif
diff --git a/drivers/fpga/xilinx.c b/drivers/fpga/xilinx.c
index 6bc1bc491fb..640baac66e6 100644
--- a/drivers/fpga/xilinx.c
+++ b/drivers/fpga/xilinx.c
@@ -138,9 +138,11 @@ int fpga_loadbitstream(int devnum, char *fpgadata, size_t size,
 	return fpga_load(devnum, dataptr, swapsize, bstype);
 }
 
-int xilinx_load(xilinx_desc *desc, const void *buf, size_t bsize,
+int xilinx_load(xilinx_desc **desc_ptr, const void *buf, size_t bsize,
 		bitstream_type bstype)
 {
+	xilinx_desc *desc = *desc_ptr;
+
 	if (!xilinx_validate (desc, (char *)__FUNCTION__)) {
 		printf ("%s: Invalid device descriptor\n", __FUNCTION__);
 		return FPGA_FAIL;
diff --git a/include/xilinx.h b/include/xilinx.h
index ab4537becfa..57b0e7be113 100644
--- a/include/xilinx.h
+++ b/include/xilinx.h
@@ -58,7 +58,7 @@ struct xilinx_fpga_op {
 
 /* Generic Xilinx Functions
  *********************************************************************/
-int xilinx_load(xilinx_desc *desc, const void *image, size_t size,
+int xilinx_load(xilinx_desc **desc_ptr, const void *image, size_t size,
 		bitstream_type bstype);
 int xilinx_dump(xilinx_desc *desc, const void *buf, size_t bsize);
 int xilinx_info(xilinx_desc *desc);
-- 
2.31.1