From: Tom Rix <trix@xxxxxxxxxx>
An FPGA manager should not be required to provide a
write_init() op if there is nothing for it do.
So add a wrapper and move the op checking.
Default to success.
Signed-off-by: Tom Rix <trix@xxxxxxxxxx>
---
drivers/fpga/fpga-mgr.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/drivers/fpga/fpga-mgr.c b/drivers/fpga/fpga-mgr.c
index ecb4c3c795fa5..87bbb940c9504 100644
--- a/drivers/fpga/fpga-mgr.c
+++ b/drivers/fpga/fpga-mgr.c
@@ -69,6 +69,14 @@ void fpga_image_info_free(struct fpga_image_info *info)
}
EXPORT_SYMBOL_GPL(fpga_image_info_free);
+static int fpga_mgr_write_init(struct fpga_manager *mgr,
+ struct fpga_image_info *info,
+ const char *buf, size_t count)
+{
+ if (mgr->mops && mgr->mops->write_init)
+ return mgr->mops->write_init(mgr, info, buf, count);
+ return 0;
+}
/*
* Call the low level driver's write_init function. This will do the
* device-specific things to get the FPGA into the state where it is ready to
@@ -83,9 +91,9 @@ static int fpga_mgr_write_init_buf(struct fpga_manager *mgr,
mgr->state = FPGA_MGR_STATE_WRITE_INIT;
if (!mgr->mops->initial_header_size)
- ret = mgr->mops->write_init(mgr, info, NULL, 0);
+ ret = fpga_mgr_write_init(mgr, info, NULL, 0);
else
- ret = mgr->mops->write_init(
+ ret = fpga_mgr_write_init(
mgr, info, buf, min(mgr->mops->initial_header_size, count));
if (ret) {
@@ -569,7 +577,7 @@ struct fpga_manager *fpga_mgr_create(struct device *parent, const char *name,
int id, ret;
if (!mops || !mops->write_complete || !mops->state ||
- !mops->write_init || (!mops->write && !mops->write_sg) ||
+ (!mops->write && !mops->write_sg) ||
(mops->write && mops->write_sg)) {
dev_err(parent, "Attempt to register without fpga_manager_ops\n");
return NULL;
--
2.26.3
