From: Anton Vorontsov Date: Thu, 25 Dec 2008 14:15:09 +0000 (+0300) Subject: USB: fsl_qe_udc: Fix disconnects reporting during bus reset X-Git-Tag: firefly_0821_release~15595^2~13 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ef84e4055f3561495c4c0e0dfb0b9f4a6e20479d;p=firefly-linux-kernel-4.4.55.git USB: fsl_qe_udc: Fix disconnects reporting during bus reset Freescale QE UDC controllers can't report the "port change" states, so the only way to handle disconnects is to process bus reset interrupts. The bus reset can take some time, that is, few irqs. Gadgets may print the disconnection events, and this causes few repetitive messages in the kernel log. This patch fixes the issue by using the usb_state machine, if the usb controller has been already reset, just quit the reset irq early. Signed-off-by: Anton Vorontsov Acked-by: David Brownell Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/gadget/fsl_qe_udc.c b/drivers/usb/gadget/fsl_qe_udc.c index 1319f8f7acba..7a820a3b4acd 100644 --- a/drivers/usb/gadget/fsl_qe_udc.c +++ b/drivers/usb/gadget/fsl_qe_udc.c @@ -2161,6 +2161,9 @@ static int reset_irq(struct qe_udc *udc) { unsigned char i; + if (udc->usb_state == USB_STATE_DEFAULT) + return 0; + qe_usb_disable(); out_8(&udc->usb_regs->usb_usadr, 0);