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From 9d49c81b7ebf7942efc14bc9533a14cb64cd68e6 Mon Sep 17 00:00:00 2001
From: Ajay Kumar Gupta <ajay.gupta@ti.com>
Date: Fri, 12 Jun 2009 19:07:13 +0530
Subject: [PATCH 14/16] musb: disable PING on status phase of control transfer
PING token is not mandatory in status phase of control transfer
so some high speed USB sticks doesn't support this.If such devices
are connected to MUSB then they would not respond to PING token
causing delayed or failed enumeration.
Fixing this issue by disabling PING token in status phase of control
transfers.
Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
---
drivers/usb/musb/musb_host.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index cf94511..4d301d2 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -1056,6 +1056,8 @@ irqreturn_t musb_h_ep0_irq(struct musb *musb)
else
csr = MUSB_CSR0_H_STATUSPKT
| MUSB_CSR0_TXPKTRDY;
+ /* disable ping token in status phase */
+ csr |= MUSB_CSR0_H_DIS_PING;
/* flag status stage */
musb->ep0_stage = MUSB_EP0_STATUS;
--
1.6.2.4
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