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From: Felipe Balbi <balbi@ti.com>
To: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Cc: Felipe Balbi <balbi@ti.com>,
	Thomas Dahlmann <dahlmann.thomas@arcor.de>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	<linux-kernel@vger.kernel.org>, <linux-geode@lists.infradead.org>,
	<linux-usb@vger.kernel.org>
Subject: Re: [PATCH 00/16] usb: gadget: amd5536udc: fix memory leaks
Date: Sun, 20 Sep 2015 11:16:55 -0500	[thread overview]
Message-ID: <20150920161655.GC1447@saruman.tx.rr.com> (raw)
In-Reply-To: <20150919035438.GA666@sudip-pc>

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Hi,

On Sat, Sep 19, 2015 at 09:24:38AM +0530, Sudip Mukherjee wrote:
> On Fri, Sep 18, 2015 at 01:39:54PM -0500, Felipe Balbi wrote:
> > On Mon, Sep 14, 2015 at 08:42:47PM +0530, Sudip Mukherjee wrote:
> > > This amd5536udc was a complete mess. The major problems that i could
> > > find are:
> > > 
> > > 1) if udc_pci_probe() fails in any stage then it just calls the
> > > udc_pci_remove() to handle error. And udc_pci_remove() works with
> > > struct udc *dev which we get from pci_get_drvdata(pdev). But we do the
> > > pci_set_drvdata(pdev, dev) almost at the end of probe. So basically
> > > incase of error we are handling the error by dereferencing a NULL
> > > pointer.
> > > 
> > > 2) udc_pci_remove() does a BUG_ON(dev->driver != NULL) and dev->driver
> > > will be set only if probe is success. So that means if probe fails then
> > > probe will call udc_pci_remove() for error handling and udc_pci_remove()
> > > will inturn halts the kernel by calling BUG().
> > > 
> > > And apart from these numerous memory leaks and not releasing of
> > > resources. Here comes a rewrite of few of the functions in an
> > > attempt to fix these.
> > 
> > run checkpatch.pl and try again
> I know checkpatch gives warning on some of my patches but as the warning
> was not related to the part I have modified so I have not done any thing
> with them as they will become unrelated changes than what is mentioned
> in the commit log.
> Anyways, I will fix up all the warnings and send v2. But do you want me
> to also fix the checkpatch warnings in those patch where functions are
> rearranged? Because in those patches functions were just moved and there
> was no change in the body of the function.

sure, just add a note "while at that, also fix checkpatch warnings"

-- 
balbi

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      parent reply	other threads:[~2015-09-20 16:17 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-14 15:12 [PATCH 00/16] usb: gadget: amd5536udc: fix memory leaks Sudip Mukherjee
2015-09-14 15:12 ` [PATCH 01/16] usb: gadget: amd5536udc: introduce free_dma_pools Sudip Mukherjee
2015-09-14 15:12 ` [PATCH 02/16] usb: gadget: amd5536udc: rewrite init_dma_pools Sudip Mukherjee
2015-09-14 15:12 ` [PATCH 03/16] usb: gadget: amd5536udc: rewrite udc_pci_probe Sudip Mukherjee
2015-09-14 15:12 ` [PATCH 04/16] usb: gadget: amd5536udc: use WARN_ON Sudip Mukherjee
2015-09-14 15:12 ` [PATCH 05/16] usb: gadget: amd5536udc: use free_dma_pools Sudip Mukherjee
2015-09-14 15:12 ` [PATCH 06/16] usb: gadget: amd5536udc: remove unnecessary conditions Sudip Mukherjee
2015-09-14 15:12 ` [PATCH 07/16] usb: gadget: amd5536udc: unmap virt_addr Sudip Mukherjee
2015-09-14 15:12 ` [PATCH 08/16] usb: gadget: amd5536udc: remove forward declaration of udc_probe Sudip Mukherjee
2015-09-14 15:12 ` [PATCH 09/16] usb: gadget: amd5536udc: remove forward declaration of udc_remote_wakeup Sudip Mukherjee
2015-09-14 15:12 ` [PATCH 10/16] usb: gadget: amd5536udc: remove forward declaration of udc_create_dma_chain Sudip Mukherjee
2015-09-14 15:12 ` [PATCH 11/16] usb: gadget: amd5536udc: remove forward declaration of udc_free_dma_chain Sudip Mukherjee
2015-09-14 15:12 ` [PATCH 12/16] usb: gadget: amd5536udc: remove forward declaration of udc_pci_* Sudip Mukherjee
2015-09-14 15:13 ` [PATCH 13/16] usb: gadget: amd5536udc: remove forward declaration of udc_basic_init Sudip Mukherjee
2015-09-14 15:13 ` [PATCH 14/16] usb: gadget: amd5536udc: NULL comparison Sudip Mukherjee
2015-09-14 15:13 ` [PATCH 15/16] usb: gadget: amd5536udc: remove multiple blank lines Sudip Mukherjee
2015-09-14 15:13 ` [PATCH 16/16] usb: gadget: amd5536udc: match alignment Sudip Mukherjee
2015-09-18 18:39 ` [PATCH 00/16] usb: gadget: amd5536udc: fix memory leaks Felipe Balbi
2015-09-19  3:54   ` Sudip Mukherjee
2015-09-20  8:12     ` Sudip Mukherjee
2015-09-20 16:17       ` Felipe Balbi
2015-09-21 12:48         ` Sudip Mukherjee
2015-09-21 14:42           ` Felipe Balbi
2015-09-20 16:16     ` Felipe Balbi [this message]

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