From: felipe.balbi@linux.intel.com (Felipe Balbi)
To: linux-arm-kernel@lists.infradead.org
Subject: [RESEND PATCH v2 5/7] usb: xhci: plat: Remove checks for optional clock in error/remove path
Date: Wed, 27 Apr 2016 10:19:32 +0300 [thread overview]
Message-ID: <877ffjo6wr.fsf@intel.com> (raw)
In-Reply-To: <20160427143343.6510ff57@xhacker>
Hi,
Jisheng Zhang <jszhang@marvell.com> writes:
> Dear Felipe,
>
> On Wed, 27 Apr 2016 08:33:52 +0300 Felipe Balbi wrote:
>
>> Jisheng Zhang <jszhang@marvell.com> writes:
>> > Commit 63589e92c2d9 ("clk: Ignore error and NULL pointers passed to
>> > clk_{unprepare, disable}()") allows NULL or error pointer to be passed
>> > unconditionally.
>> >
>> > This patch is to simplify probe error and remove code paths.
>>
>> this seems wrong to me. xhci->clk isn't initialized to NULL, it's either
>> initialized to a valid struct clk * or some ERR_PTR() value.
>
> Commit 63589e92c2d9 could also ignore error value ;)
oh okay, thanks for that. That's, IMHO, quite dangerous ;-)
--
balbi
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From: Felipe Balbi <felipe.balbi@linux.intel.com>
To: Jisheng Zhang <jszhang@marvell.com>, mathias.nyman@linux.intel.com
Cc: gregkh@linuxfoundation.org, linux-usb@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
yendapally.reddy@broadcom.com
Subject: Re: [RESEND PATCH v2 5/7] usb: xhci: plat: Remove checks for optional clock in error/remove path
Date: Wed, 27 Apr 2016 10:19:32 +0300 [thread overview]
Message-ID: <877ffjo6wr.fsf@intel.com> (raw)
In-Reply-To: <20160427143343.6510ff57@xhacker>
[-- Attachment #1: Type: text/plain, Size: 714 bytes --]
Hi,
Jisheng Zhang <jszhang@marvell.com> writes:
> Dear Felipe,
>
> On Wed, 27 Apr 2016 08:33:52 +0300 Felipe Balbi wrote:
>
>> Jisheng Zhang <jszhang@marvell.com> writes:
>> > Commit 63589e92c2d9 ("clk: Ignore error and NULL pointers passed to
>> > clk_{unprepare, disable}()") allows NULL or error pointer to be passed
>> > unconditionally.
>> >
>> > This patch is to simplify probe error and remove code paths.
>>
>> this seems wrong to me. xhci->clk isn't initialized to NULL, it's either
>> initialized to a valid struct clk * or some ERR_PTR() value.
>
> Commit 63589e92c2d9 could also ignore error value ;)
oh okay, thanks for that. That's, IMHO, quite dangerous ;-)
--
balbi
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next prev parent reply other threads:[~2016-04-27 7:19 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-26 12:57 [RESEND PATCH v2 0/7] usb: xhci-plat: support generic PHY and vbus regulator Jisheng Zhang
2016-04-26 12:57 ` Jisheng Zhang
2016-04-26 12:57 ` [RESEND PATCH v2 1/7] usb: xhci: plat: Fix suspend/resume when the optional clk exists Jisheng Zhang
2016-04-26 12:57 ` Jisheng Zhang
2016-04-27 5:25 ` Felipe Balbi
2016-04-27 5:25 ` Felipe Balbi
2016-04-27 5:46 ` Jisheng Zhang
2016-04-27 5:46 ` Jisheng Zhang
2016-04-26 12:57 ` [RESEND PATCH v2 2/7] usb: xhci: plat: attach the usb_phy to the correct hcd Jisheng Zhang
2016-04-26 12:57 ` Jisheng Zhang
2016-04-27 5:29 ` Felipe Balbi
2016-04-27 5:29 ` Felipe Balbi
2016-04-27 5:59 ` Jisheng Zhang
2016-04-27 5:59 ` Jisheng Zhang
2016-04-27 6:19 ` Felipe Balbi
2016-04-27 6:19 ` Felipe Balbi
2016-04-26 12:57 ` [RESEND PATCH v2 3/7] usb: xhci: plat: Fix suspend/resume when the optional usb_phy exists Jisheng Zhang
2016-04-26 12:57 ` Jisheng Zhang
2016-04-27 5:30 ` Felipe Balbi
2016-04-27 5:30 ` Felipe Balbi
2016-04-26 12:57 ` [RESEND PATCH v2 4/7] usb: xhci: plat: sort the headers in alphabetic order Jisheng Zhang
2016-04-26 12:57 ` Jisheng Zhang
2016-04-26 12:57 ` [RESEND PATCH v2 5/7] usb: xhci: plat: Remove checks for optional clock in error/remove path Jisheng Zhang
2016-04-26 12:57 ` Jisheng Zhang
2016-04-27 5:33 ` Felipe Balbi
2016-04-27 5:33 ` Felipe Balbi
2016-04-27 6:33 ` Jisheng Zhang
2016-04-27 6:33 ` Jisheng Zhang
2016-04-27 7:19 ` Felipe Balbi [this message]
2016-04-27 7:19 ` Felipe Balbi
2016-04-26 12:57 ` [RESEND PATCH v2 6/7] usb: xhci: plat: add generic PHY support Jisheng Zhang
2016-04-26 12:57 ` Jisheng Zhang
2016-04-27 5:35 ` Felipe Balbi
2016-04-27 5:35 ` Felipe Balbi
2016-04-27 6:46 ` Jisheng Zhang
2016-04-27 6:46 ` Jisheng Zhang
2016-04-27 7:21 ` Felipe Balbi
2016-04-27 7:21 ` Felipe Balbi
2016-04-27 7:57 ` Heikki Krogerus
2016-04-27 7:57 ` Heikki Krogerus
2016-04-27 9:34 ` Felipe Balbi
2016-04-27 9:34 ` Felipe Balbi
2016-04-26 12:57 ` [RESEND PATCH v2 7/7] usb: xhci: plat: add vbus regulator control Jisheng Zhang
2016-04-26 12:57 ` Jisheng Zhang
2016-04-27 5:37 ` Felipe Balbi
2016-04-27 5:37 ` Felipe Balbi
2016-04-27 9:57 ` Mark Brown
2016-04-27 9:57 ` Mark Brown
2016-04-27 10:25 ` Jisheng Zhang
2016-04-27 10:25 ` Jisheng Zhang
2016-04-27 13:24 ` Mark Brown
2016-04-27 13:24 ` Mark Brown
2016-04-27 10:25 ` Felipe Balbi
2016-04-27 10:25 ` Felipe Balbi
2016-04-27 10:35 ` Mark Brown
2016-04-27 10:35 ` Mark Brown
2016-04-27 10:38 ` Felipe Balbi
2016-04-27 10:38 ` Felipe Balbi
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