(pci_probe) don't exit(1) on systems without pci

arm systems don't always have pci busses so killing the app
for this reasons is just bad idea. The workaround is to check for
pci procfs files and if not found return an empty set.

v1: by rtp
v2: simplify (tv)

2 files changed, 7 insertions, 0 deletions

diff --git a/NEWS b/NEWS
index 83f77e2..93f386d 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,5 @@
+- don't exit(1) on systems without pci (eg: ARM) (rtp)
+
 Version 0.11.1 - 1 December 2009, Thierry Vignaud
 
 - do not crash if there're more than 100 PCI devices
diff --git a/pci.c b/pci.c
index 5bd344f..dda2866 100644
--- a/pci.c
+++ b/pci.c
@@ -37,6 +37,11 @@ extern struct pciusb_entries pci_probe(void) {
 	struct pci_dev *dev;
 	char classbuf[128], vendorbuf[128], devbuf[128];
 
+	r.nb = 0;
+	if ((access(proc_pci_path_default, R_OK) != 0)
+		|| (proc_pci_path && (access(proc_pci_path_default, R_OK) != 0)))
+		return r;
+
 	pacc = pci_alloc();
 
 	if (proc_pci_path) {