Re: [PATCH 1/2] omap3: sr: fix memory leak and simplify the code

[Artem Bityutskiy <dedekind1@gmail.com>]

On Fri, 2010-07-09 at 16:20 +0300, Artem Bityutskiy wrote:
> From: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
> 
> This patch fixes the following problem indicated by kmemleak:
> 
> kmemleak: unreferenced object 0xdf93c280 (size 64):
> kmemleak:   backtrace:
> kmemleak:     [<c00df6d4>] create_object+0x104/0x200
> kmemleak:     [<c00d7638>] kmem_cache_alloc+0xe4/0xf4
> kmemleak:     [<c000fc38>] omap_devinit_smartreflex+0x44/0x244
> kmemleak:     [<c003a33c>] do_one_initcall+0x5c/0x1b8
> kmemleak:     [<c00083fc>] kernel_init+0x94/0x110
> kmemleak:     [<c003ba04>] kernel_thread_exit+0x0/0x8
> 
> The reason is that 'omap_devinit_smartreflex()' allocates 'sr_data',
> then passes it to 'omap_device_build()', which 'kmemdup()'s it and
> uses the copy. But 'omap_devinit_smartreflex()' never frees 'sr_data'.
> 
> This patch make 'sr_data' to be a stack variable, which eliminates
> the memory leak and simplifies the code a bit.
> 
> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
> ---
>  arch/arm/mach-omap2/sr_device.c |   27 +++++++++------------------
>  1 files changed, 9 insertions(+), 18 deletions(-)

Note, I only compile-tested both of the patches, so be careful.

-- 
Best Regards,
Artem Bityutskiy (Артём Битюцкий)

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