From: Alan Mikhak alan.mikhak@sifive.com
[ Upstream commit f16fb16ed16c7f561e9c41c9ae4107c7f6aa553c ]
PCI endpoint test function code should honor the .bar_fixed_size parameter from underlying endpoint controller drivers or results may be unexpected.
In pci_epf_test_alloc_space(), check if BAR being used for test register space is a fixed size BAR. If so, allocate the required fixed size.
Signed-off-by: Alan Mikhak alan.mikhak@sifive.com Signed-off-by: Lorenzo Pieralisi lorenzo.pieralisi@arm.com Acked-by: Kishon Vijay Abraham I kishon@ti.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pci/endpoint/functions/pci-epf-test.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c index 27806987e93b..7d41e6684b87 100644 --- a/drivers/pci/endpoint/functions/pci-epf-test.c +++ b/drivers/pci/endpoint/functions/pci-epf-test.c @@ -434,10 +434,16 @@ static int pci_epf_test_alloc_space(struct pci_epf *epf) int bar; enum pci_barno test_reg_bar = epf_test->test_reg_bar; const struct pci_epc_features *epc_features; + size_t test_reg_size;
epc_features = epf_test->epc_features;
- base = pci_epf_alloc_space(epf, sizeof(struct pci_epf_test_reg), + if (epc_features->bar_fixed_size[test_reg_bar]) + test_reg_size = bar_size[test_reg_bar]; + else + test_reg_size = sizeof(struct pci_epf_test_reg); + + base = pci_epf_alloc_space(epf, test_reg_size, test_reg_bar, epc_features->align); if (!base) { dev_err(dev, "Failed to allocated register space\n");