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fpga: fpga-mgr: wrap the write_sg() op 

An FPGA manager should not be required to provide a
write_sg function. Move the op check to the wrapper.
Default to -EOPNOTSUP so its users will fail
gracefully.

[mdf@kernel.org: Reworded first line]
Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: Moritz Fischer <mdf@kernel.org>
This commit is contained in:
Tom Rix 2021-06-25 12:51:48 -07:00 committed by Moritz Fischer
parent 6489d3b003
commit 630211a170
1 changed files with 9 additions and 1 deletions
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10
drivers/fpga/fpga-mgr.c
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@ -83,6 +83,14 @@ static inline int fpga_mgr_write_init(struct fpga_manager *mgr,
return 0;
}
static inline int fpga_mgr_write_sg(struct fpga_manager *mgr,
struct sg_table *sgt)
{
if (mgr->mops->write_sg)
return mgr->mops->write_sg(mgr, sgt);
return -EOPNOTSUPP;
}
/**
* fpga_image_info_alloc - Allocate an FPGA image info struct
* @dev: owning device
@ -225,7 +233,7 @@ static int fpga_mgr_buf_load_sg(struct fpga_manager *mgr,
/* Write the FPGA image to the FPGA. */
mgr->state = FPGA_MGR_STATE_WRITE;
if (mgr->mops->write_sg) {
ret = mgr->mops->write_sg(mgr, sgt);
ret = fpga_mgr_write_sg(mgr, sgt);
} else {
struct sg_mapping_iter miter;