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cxl/region: Handle endpoint decoders in cxl_region_find_decoder() 

[ Upstream commit 453a7fde8031a5192ed2f9646ad048c1a5e930dc ]

In preparation for adding a new caller of cxl_region_find_decoders()
teach it to find a decoder from a cxl_endpoint_decoder structure.

Combining switch and endpoint decoder lookup in one function prevents
code duplication in call sites.

Update the existing caller.

Signed-off-by: Alison Schofield <alison.schofield@intel.com>
Tested-by: Wonjae Lee <wj28.lee@samsung.com>
Link: https://lore.kernel.org/r/79ae6d72978ef9f3ceec9722e1cb793820553c8e.1706736863.git.alison.schofield@intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Alison Schofield 2024-01-31 13:59:30 -08:00 committed by Sasha Levin
parent 031b6233fe
commit 9f57eecf94
1 changed files with 8 additions and 6 deletions
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14
drivers/cxl/core/region.c
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@ -729,12 +729,17 @@ static int match_auto_decoder(struct device *dev, void *data)
return 0;
}
static struct cxl_decoder *cxl_region_find_decoder(struct cxl_port *port,
struct cxl_region *cxlr)
static struct cxl_decoder *
cxl_region_find_decoder(struct cxl_port *port,
struct cxl_endpoint_decoder *cxled,
struct cxl_region *cxlr)
{
struct device *dev;
int id = 0;
if (port == cxled_to_port(cxled))
return &cxled->cxld;
if (test_bit(CXL_REGION_F_AUTO, &cxlr->flags))
dev = device_find_child(&port->dev, &cxlr->params,
match_auto_decoder);
@ -852,10 +857,7 @@ static int cxl_rr_alloc_decoder(struct cxl_port *port, struct cxl_region *cxlr,
{
struct cxl_decoder *cxld;
if (port == cxled_to_port(cxled))
cxld = &cxled->cxld;
else
cxld = cxl_region_find_decoder(port, cxlr);
cxld = cxl_region_find_decoder(port, cxled, cxlr);
if (!cxld) {
dev_dbg(&cxlr->dev, "%s: no decoder available\n",
dev_name(&port->dev));