From: Sascha Hauer <s.hauer@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 3/4] USB gadget: fsl: Bail out if no udc exists
Date: Thu, 13 Feb 2014 10:42:52 +0100 [thread overview]
Message-ID: <1392284573-22410-4-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1392284573-22410-1-git-send-email-s.hauer@pengutronix.de>
When there is no udc registered bail out in usb_gadget_poll
instead of crashing the system.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
drivers/usb/gadget/fsl_udc.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/usb/gadget/fsl_udc.c b/drivers/usb/gadget/fsl_udc.c
index 993c7eb..50bae78 100644
--- a/drivers/usb/gadget/fsl_udc.c
+++ b/drivers/usb/gadget/fsl_udc.c
@@ -1938,6 +1938,9 @@ int usb_gadget_poll(void)
u32 irq_src;
int status = 0;
+ if (!udc)
+ return -ENODEV;
+
/* Disable ISR for OTG host mode */
if (udc->stopped)
return -EIO;
--
1.8.5.3
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next prev parent reply other threads:[~2014-02-13 9:43 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-13 9:42 USB gadget / dfu fixes Sascha Hauer
2014-02-13 9:42 ` [PATCH 1/4] USB gadget: at91: return error when no udc is registered Sascha Hauer
2014-02-13 9:42 ` [PATCH 2/4] dfu command: check return values Sascha Hauer
2014-02-13 9:42 ` Sascha Hauer [this message]
2014-02-13 9:42 ` [PATCH 4/4] USB gadget: dfu: propagate error from usb_gadget_poll Sascha Hauer
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