diff options
| -rw-r--r-- | drivers/pci/endpoint/pci-epf-core.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/pci/endpoint/pci-epf-core.c b/drivers/pci/endpoint/pci-epf-core.c index 9da9a1e9c086..f2b4d34454c4 100644 --- a/drivers/pci/endpoint/pci-epf-core.c +++ b/drivers/pci/endpoint/pci-epf-core.c @@ -260,6 +260,7 @@ void *pci_epf_alloc_space(struct pci_epf *epf, size_t size, enum pci_barno bar, const struct pci_epc_features *epc_features, enum pci_epc_interface_type type) { + u64 bar_fixed_size = epc_features->bar_fixed_size[bar]; size_t align = epc_features->align; struct pci_epf_bar *epf_bar; dma_addr_t phys_addr; @@ -270,6 +271,14 @@ void *pci_epf_alloc_space(struct pci_epf *epf, size_t size, enum pci_barno bar, if (size < 128) size = 128; + if (bar_fixed_size && size > bar_fixed_size) { + dev_err(&epf->dev, "requested BAR size is larger than fixed size\n"); + return NULL; + } + + if (bar_fixed_size) + size = bar_fixed_size; + if (align) size = ALIGN(size, align); else |