From e6335d3eaafc60b74bd05761b2bf0e57ad429aa7 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Pali=20Roh=C3=A1r?= Date: Thu, 7 Oct 2021 14:51:00 +0200 Subject: [PATCH] pci: Fix showing bars MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Header type is 7-bit number so properly clear upper 8th bit which indicates multifunction device. And do not try to show bars for unsupported header types. Signed-off-by: Pali Rohár Reviewed-by: Stefan Roese --- cmd/pci.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/cmd/pci.c b/cmd/pci.c index cfabdc0..4a82854d 100644 --- a/cmd/pci.c +++ b/cmd/pci.c @@ -71,10 +71,15 @@ static int pci_bar_show(struct udevice *dev) int prefetchable; dm_pci_read_config8(dev, PCI_HEADER_TYPE, &header_type); + header_type &= 0x7f; if (header_type == PCI_HEADER_TYPE_CARDBUS) { printf("CardBus doesn't support BARs\n"); return -ENOSYS; + } else if (header_type != PCI_HEADER_TYPE_NORMAL && + header_type != PCI_HEADER_TYPE_BRIDGE) { + printf("unknown header type\n"); + return -ENOSYS; } bar_cnt = (header_type == PCI_HEADER_TYPE_NORMAL) ? 6 : 2; -- 2.7.4