From: Ben Widawsky <[email protected]> In preparation for region provisioning all device decoders need to be enumerated since DPA allocations are calculated by summing the capacities of all decoders in a set. I.e. the programming for decoder[N] depends on the state of decoder[N-1], so skipping over decoders that fail to initialize prevents accurate DPA accounting.
Signed-off-by: Ben Widawsky <[email protected]> [djbw: reword changelog] Signed-off-by: Dan Williams <[email protected]> --- drivers/cxl/core/hdm.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) diff --git a/drivers/cxl/core/hdm.c b/drivers/cxl/core/hdm.c index 2223d151b61b..c940a4911fee 100644 --- a/drivers/cxl/core/hdm.c +++ b/drivers/cxl/core/hdm.c @@ -199,7 +199,7 @@ int devm_cxl_enumerate_decoders(struct cxl_hdm *cxlhdm) { void __iomem *hdm = cxlhdm->regs.hdm_decoder; struct cxl_port *port = cxlhdm->port; - int i, committed, failed; + int i, committed; u32 ctrl; /* @@ -219,7 +219,7 @@ int devm_cxl_enumerate_decoders(struct cxl_hdm *cxlhdm) if (committed != cxlhdm->decoder_count) msleep(20); - for (i = 0, failed = 0; i < cxlhdm->decoder_count; i++) { + for (i = 0; i < cxlhdm->decoder_count; i++) { int target_map[CXL_DECODER_MAX_INTERLEAVE] = { 0 }; int rc, target_count = cxlhdm->target_count; struct cxl_decoder *cxld; @@ -250,8 +250,7 @@ int devm_cxl_enumerate_decoders(struct cxl_hdm *cxlhdm) rc = init_hdm_decoder(port, cxld, target_map, hdm, i); if (rc) { put_device(&cxld->dev); - failed++; - continue; + return rc; } rc = add_hdm_decoder(port, cxld, target_map); if (rc) { @@ -261,11 +260,6 @@ int devm_cxl_enumerate_decoders(struct cxl_hdm *cxlhdm) } } - if (failed == cxlhdm->decoder_count) { - dev_err(&port->dev, "No valid decoders found\n"); - return -ENXIO; - } - return 0; } EXPORT_SYMBOL_NS_GPL(devm_cxl_enumerate_decoders, CXL);
