Author: kib
Date: Fri Jul 19 05:28:47 2013
New Revision: 253464
URL: http://svnweb.freebsd.org/changeset/base/253464
Log:
MFC r253398:
Add a tunable to force disable MSI use for xhci(4).
Approved by: re (delphij)
Modified:
stable/9/sys/dev/usb/controller/xhci_pci.c
Directory Properties:
stable/9/sys/ (props changed)
stable/9/sys/dev/ (props changed)
Modified: stable/9/sys/dev/usb/controller/xhci_pci.c
==============================================================================
--- stable/9/sys/dev/usb/controller/xhci_pci.c Fri Jul 19 03:27:04 2013
(r253463)
+++ stable/9/sys/dev/usb/controller/xhci_pci.c Fri Jul 19 05:28:47 2013
(r253464)
@@ -132,6 +132,9 @@ xhci_pci_probe(device_t self)
}
}
+static int xhci_use_msi = 1;
+TUNABLE_INT("hw.usb.xhci.msi", &xhci_use_msi);
+
static int
xhci_pci_attach(device_t self)
{
@@ -159,13 +162,15 @@ xhci_pci_attach(device_t self)
sc->sc_io_size = rman_get_size(sc->sc_io_res);
sc->sc_irq_rid = 0;
- count = pci_msi_count(self);
- if (count >= 1) {
- count = 1;
- if (pci_alloc_msi(self, &count) == 0) {
- if (bootverbose)
- device_printf(self, "MSI enabled\n");
- sc->sc_irq_rid = 1;
+ if (xhci_use_msi) {
+ count = pci_msi_count(self);
+ if (count >= 1) {
+ count = 1;
+ if (pci_alloc_msi(self, &count) == 0) {
+ if (bootverbose)
+ device_printf(self, "MSI enabled\n");
+ sc->sc_irq_rid = 1;
+ }
}
}
sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ,
_______________________________________________
svn-src-all@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
