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Subject[PATCH v4 2/7] fpga-mgr: make write_complete() op optional
Date
From: Tom Rix <trix@redhat.com>

An FPGA manager should not be required to provide a
write_complete function if there is nothing. Move
the op check to the existing wrapper.
Default to success.
Remove noop function.

Signed-off-by: Tom Rix <trix@redhat.com>
---
drivers/fpga/fpga-mgr.c | 45 +++++++++++++++++++-------------------
drivers/fpga/zynqmp-fpga.c | 7 ------
2 files changed, 23 insertions(+), 29 deletions(-)

diff --git a/drivers/fpga/fpga-mgr.c b/drivers/fpga/fpga-mgr.c
index c047de8a059b7..05a69ab3ecb9e 100644
--- a/drivers/fpga/fpga-mgr.c
+++ b/drivers/fpga/fpga-mgr.c
@@ -25,6 +25,28 @@ struct fpga_mgr_devres {
struct fpga_manager *mgr;
};

+/*
+ * After all the FPGA image has been written, do the device specific steps to
+ * finish and set the FPGA into operating mode.
+ */
+static inline int fpga_mgr_write_complete(struct fpga_manager *mgr,
+ struct fpga_image_info *info)
+{
+ int ret = 0;
+
+ mgr->state = FPGA_MGR_STATE_WRITE_COMPLETE;
+ if (mgr->mops->write_complete)
+ ret = mgr->mops->write_complete(mgr, info);
+ if (ret) {
+ dev_err(&mgr->dev, "Error after writing image data to FPGA\n");
+ mgr->state = FPGA_MGR_STATE_WRITE_COMPLETE_ERR;
+ return ret;
+ }
+ mgr->state = FPGA_MGR_STATE_OPERATING;
+
+ return 0;
+}
+
static inline int fpga_mgr_write_init(struct fpga_manager *mgr,
struct fpga_image_info *info,
const char *buf, size_t count)
@@ -146,27 +168,6 @@ static int fpga_mgr_write_init_sg(struct fpga_manager *mgr,
return ret;
}

-/*
- * After all the FPGA image has been written, do the device specific steps to
- * finish and set the FPGA into operating mode.
- */
-static int fpga_mgr_write_complete(struct fpga_manager *mgr,
- struct fpga_image_info *info)
-{
- int ret;
-
- mgr->state = FPGA_MGR_STATE_WRITE_COMPLETE;
- ret = mgr->mops->write_complete(mgr, info);
- if (ret) {
- dev_err(&mgr->dev, "Error after writing image data to FPGA\n");
- mgr->state = FPGA_MGR_STATE_WRITE_COMPLETE_ERR;
- return ret;
- }
- mgr->state = FPGA_MGR_STATE_OPERATING;
-
- return 0;
-}
-
/**
* fpga_mgr_buf_load_sg - load fpga from image in buffer from a scatter list
* @mgr: fpga manager
@@ -577,7 +578,7 @@ struct fpga_manager *fpga_mgr_create(struct device *parent, const char *name,
struct fpga_manager *mgr;
int id, ret;

- if (!mops || !mops->write_complete || !mops->state ||
+ if (!mops || !mops->state ||
(!mops->write && !mops->write_sg) ||
(mops->write && mops->write_sg)) {
dev_err(parent, "Attempt to register without fpga_manager_ops\n");
diff --git a/drivers/fpga/zynqmp-fpga.c b/drivers/fpga/zynqmp-fpga.c
index 125743c9797ff..9efbd70aa6864 100644
--- a/drivers/fpga/zynqmp-fpga.c
+++ b/drivers/fpga/zynqmp-fpga.c
@@ -66,12 +66,6 @@ static int zynqmp_fpga_ops_write(struct fpga_manager *mgr,
return ret;
}

-static int zynqmp_fpga_ops_write_complete(struct fpga_manager *mgr,
- struct fpga_image_info *info)
-{
- return 0;
-}
-
static enum fpga_mgr_states zynqmp_fpga_ops_state(struct fpga_manager *mgr)
{
u32 status = 0;
@@ -87,7 +81,6 @@ static const struct fpga_manager_ops zynqmp_fpga_ops = {
.state = zynqmp_fpga_ops_state,
.write_init = zynqmp_fpga_ops_write_init,
.write = zynqmp_fpga_ops_write,
- .write_complete = zynqmp_fpga_ops_write_complete,
};

static int zynqmp_fpga_probe(struct platform_device *pdev)
--
2.26.3
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