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authorDavid Brownell <david-b@pacbell.net>2005-08-31 11:52:57 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2005-09-12 12:23:46 -0700
commitfdd13b36c4a501d8787a27e54635fbd943f2685d (patch)
treeeebcc2fc677b5b625235e2e0797b5f9ab6d74905 /drivers/usb/host/ohci-pxa27x.c
parente0fd3cbc50a8c925e8e7d8448df689015362c458 (diff)
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[PATCH] USB: OHCI relies less on NDP register
Some OHCI implementations have differences in the way the NDP register (in roothub_a) reports the number of ports present. This patch allows the platform specific code to optionally supply the number of ports. The driver just reads the value at init (if not supplied) instead of reading it every time its needed (except for an AMD756 bug workaround). It also sets the value correctly for the ARM pxa27x architecture. Signed-Off-By: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/ohci-pxa27x.c')
-rw-r--r--drivers/usb/host/ohci-pxa27x.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/host/ohci-pxa27x.c b/drivers/usb/host/ohci-pxa27x.c
index e5bc178..5dd20db 100644
--- a/drivers/usb/host/ohci-pxa27x.c
+++ b/drivers/usb/host/ohci-pxa27x.c
@@ -258,6 +258,9 @@ ohci_pxa27x_start (struct usb_hcd *hcd)
ohci_dbg (ohci, "ohci_pxa27x_start, ohci:%p", ohci);
+ /* The value of NDP in roothub_a is incorrect on this hardware */
+ ohci->num_ports = 3;
+
if ((ret = ohci_init(ohci)) < 0)
return ret;