From: Frederic Barrat fbarrat@linux.ibm.com
commit 40ac790d99c6dd16b367d5c2339e446a5f1b0593 upstream.
Improve the error message shown if a capi adapter is plugged on a capi-incompatible slot directly under the PHB (no intermediate switch).
Fixes: 5632874311db ("cxl: Add support for POWER9 DD2") Cc: stable@vger.kernel.org # 4.14+ Signed-off-by: Frederic Barrat fbarrat@linux.ibm.com Reviewed-by: Andrew Donnellan ajd@linux.ibm.com Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://lore.kernel.org/r/20200407115601.25453-1-fbarrat@linux.ibm.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/misc/cxl/pci.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/misc/cxl/pci.c +++ b/drivers/misc/cxl/pci.c @@ -397,8 +397,8 @@ int cxl_calc_capp_routing(struct pci_dev *capp_unit_id = get_capp_unit_id(np, *phb_index); of_node_put(np); if (!*capp_unit_id) { - pr_err("cxl: invalid capp unit id (phb_index: %d)\n", - *phb_index); + pr_err("cxl: No capp unit found for PHB[%lld,%d]. Make sure the adapter is on a capi-compatible slot\n", + *chipid, *phb_index); return -ENODEV; }