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From: richard.zhao@freescale.com (Richard Zhao)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v8 01/14] usb: chipidea: remove unneeded NULL check
Date: Thu, 28 Jun 2012 11:37:18 +0800	[thread overview]
Message-ID: <1340854652-24717-2-git-send-email-richard.zhao@freescale.com> (raw)
In-Reply-To: <1340854652-24717-1-git-send-email-richard.zhao@freescale.com>

From: Alexander Shishkin <alexander.shishkin@linux.intel.com>

As reported by Dan Carpenter, there is a NULL check in udc_start() that
follows a dereference of the pointer that's being checked. However, at
that point udc pointer shouldn't ever be NULL and if it is, the dereference
should cause an oops.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
Acked-by: Marek Vasut <marex@denx.de>
---
 drivers/usb/chipidea/udc.c |    3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index 51f9694..cdb9212 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -1647,9 +1647,6 @@ static int udc_start(struct ci13xxx *udc)
 	struct device *dev = udc->dev;
 	int retval = 0;
 
-	if (!udc)
-		return -EINVAL;
-
 	spin_lock_init(&udc->lock);
 
 	udc->gadget.ops          = &usb_gadget_ops;
-- 
1.7.9.5

  reply	other threads:[~2012-06-28  3:37 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-06-28  3:37 [PATCH v8 00/14] add imx usb driver based on Greg next tree Richard Zhao
2012-06-28  3:37 ` Richard Zhao [this message]
2012-06-28  3:37 ` [PATCH v8 02/14] usb: chipidea: drop useless arch-check Richard Zhao
2012-06-28  3:37 ` [PATCH v8 03/14] usb: chipidea: msm: add missing section annotation Richard Zhao
2012-06-28  3:37 ` [PATCH v8 04/14] usb: chipidea: msm: add remove method Richard Zhao
2012-06-28  3:37 ` [PATCH v8 05/14] USB: Chipidea: rename struct ci13xxx_udc_driver to struct ci13xxx_platform_data Richard Zhao
2012-06-28  3:37 ` [PATCH v8 06/14] USB: Chipidea: rename struct ci13xxx variables from udc to ci Richard Zhao
2012-06-28  3:37 ` [PATCH v8 07/14] USB: Chipidea: add unified ci13xxx_{add, remove}_device for platform drivers Richard Zhao
2012-06-28  3:37 ` [PATCH v8 08/14] USB: Chipidea: add ci13xxx device id management Richard Zhao
2012-06-28  3:37 ` [PATCH v8 09/14] usb: chipidea: select USB_EHCI_ROOT_HUB_TT in USB_CHIPIDEA_HOST of Kconfig Richard Zhao
2012-06-28  3:37 ` [PATCH v8 10/14] usb: otg: add notify_connect/notify_disconnect callback Richard Zhao
2012-06-28  3:37 ` [PATCH v8 11/14] USB: notify phy when root hub port connect change Richard Zhao
2012-06-28  3:37 ` [PATCH v8 12/14] usb: chipidea: permit driver bindings pass phy pointer Richard Zhao
2012-06-28  3:37 ` [PATCH v8 13/14] usb: otg: add basic mxs phy driver support Richard Zhao
2012-06-29  9:04   ` Richard Zhao
2012-06-28  3:37 ` [PATCH v8 14/14] usb: chipidea: add imx platform driver Richard Zhao
2012-06-29  9:03   ` Richard Zhao
  -- strict thread matches above, loose matches on Subject: below --
2012-06-29  9:48 [PATCH v8 00/14] add imx usb driver based on Greg next tree Richard Zhao
2012-06-29  9:48 ` [PATCH v8 01/14] usb: chipidea: remove unneeded NULL check Richard Zhao

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