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    Subject[PATCH 5.9 62/74] cxl: Rework error message for incompatible slots
    Date
    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
    @@ -393,8 +393,8 @@ 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;
    }


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