From: Andrey Konovalov andreyknvl@google.com
commit 8442b02bf3c6770e0d7e7ea17be36c30e95987b6 upstream.
When fuzzing the USB subsystem with syzkaller, we currently use 8 testing processes within one VM. To isolate testing processes from one another it is desirable to assign a dedicated USB bus to each of those, which means we need at least 8 Dummy UDC/HCD devices.
This patch increases the maximum number of Dummy UDC/HCD devices to 32 (more than 8 in case we need more of them in the future).
Signed-off-by: Andrey Konovalov andreyknvl@google.com Link: https://lore.kernel.org/r/665578f904484069bb6100fb20283b22a046ad9b.157166748... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/usb/gadget/udc/dummy_hcd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c index 94b1ab9..d0248c5 100644 --- a/drivers/usb/gadget/udc/dummy_hcd.c +++ b/drivers/usb/gadget/udc/dummy_hcd.c @@ -2739,7 +2739,7 @@ static int dummy_hcd_resume(struct platform_device *pdev) };
/*-------------------------------------------------------------------------*/ -#define MAX_NUM_UDC 2 +#define MAX_NUM_UDC 32 static struct platform_device *the_udc_pdev[MAX_NUM_UDC]; static struct platform_device *the_hcd_pdev[MAX_NUM_UDC];