On Mon, Mar 23, 2026 at 12:59:27PM +0100, Christian Bruel wrote:
> Set the STATUS_NO_RESOURCE status bit on pci_epc_set_bar() -ENOSPC.
> Here this is used to indicate there are not enough inbound window resources
> to allocate the subrange.
>
> Signed-off-by: Christian Bruel <[email protected]>
> Reviewed-by: Niklas Cassel <[email protected]>
Reviewed-by: Frank Li <[email protected]>
> ---
> drivers/pci/endpoint/functions/pci-epf-test.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c
> b/drivers/pci/endpoint/functions/pci-epf-test.c
> index
> 06bf53b28fb7ae2244a6d82bd5fe76d40db830b7..591d301fa89d89addf5df16e775e80460b689589
> 100644
> --- a/drivers/pci/endpoint/functions/pci-epf-test.c
> +++ b/drivers/pci/endpoint/functions/pci-epf-test.c
> @@ -54,6 +54,7 @@
> #define STATUS_BAR_SUBRANGE_SETUP_FAIL BIT(15)
> #define STATUS_BAR_SUBRANGE_CLEAR_SUCCESS BIT(16)
> #define STATUS_BAR_SUBRANGE_CLEAR_FAIL BIT(17)
> +#define STATUS_NO_RESOURCE BIT(18)
>
> #define FLAG_USE_DMA BIT(0)
>
> @@ -901,6 +902,8 @@ static void pci_epf_test_bar_subrange_setup(struct
> pci_epf_test *epf_test,
> ret = pci_epc_set_bar(epc, epf->func_no, epf->vfunc_no, bar);
> if (ret) {
> dev_err(&epf->dev, "pci_epc_set_bar() failed: %d\n", ret);
> + if (ret == -ENOSPC)
> + status |= STATUS_NO_RESOURCE;
> bar->submap = old_submap;
> bar->num_submap = old_nsub;
> ret = pci_epc_set_bar(epc, epf->func_no, epf->vfunc_no, bar);
>
> --
> 2.34.1
>
