* RE: [PATCH 1/1] dma:
[not found] <20080512205052.C1DFB7000085@mwinf2b01.orange.fr>
@ 2008-05-13 13:04 ` Sosnowski, Maciej
2008-05-13 22:55 ` Dan Williams
1 sibling, 0 replies; 2+ messages in thread
From: Sosnowski, Maciej @ 2008-05-13 13:04 UTC (permalink / raw)
To: Christophe Jaillet; +Cc: linux, Williams, Dan J
Christophe Jaillet wrote:
> From: Christophe Jaillet <christophe.jaillet@wanadoo.fr>
>
> Hi, here is a patch against linux/drivers/dma/iop-adma.c which :
>
> 1) Remove an explicit memset(.., 0, ...) to a variable allocated with
> kzalloc (i.e. 'dest').
>
> 2) Allocate 'src' with kmalloc instead of kzalloc as all elements of the
> 'src' buffer are initialized in a 'for(...)' loop just after.
>
> 3) remove useless 'sizeof(u8)', which always returns 1, when computing the
> size of the memory to be allocated.
>
>
> Note: this patch is based on 'linux-2.6.25.tar.bz2'
>
> Signed-off-by: Christophe Jaillet <christophe.jaillet@wanadoo.fr>
>
> ---
>
> --- linux/drivers/dma/iop-adma.c 2008-04-17 04:49:44.000000000 +0200
> +++ linux/drivers/dma/iop-adma.c.cj 2008-05-12 22:39:14.000000000 +0200
> @@ -825,10 +825,10 @@ static int __devinit iop_adma_memcpy_sel
>
> dev_dbg(device->common.dev, "%s\n", __func__);
>
> - src = kzalloc(sizeof(u8) * IOP_ADMA_TEST_SIZE, GFP_KERNEL);
> + src = kmalloc(IOP_ADMA_TEST_SIZE, GFP_KERNEL);
> if (!src)
> return -ENOMEM;
> - dest = kzalloc(sizeof(u8) * IOP_ADMA_TEST_SIZE, GFP_KERNEL);
> + dest = kzalloc(IOP_ADMA_TEST_SIZE, GFP_KERNEL);
> if (!dest) {
> kfree(src);
> return -ENOMEM;
> @@ -838,8 +838,6 @@ static int __devinit iop_adma_memcpy_sel
> for (i = 0; i < IOP_ADMA_TEST_SIZE; i++)
> ((u8 *) src)[i] = (u8)i;
>
> - memset(dest, 0, IOP_ADMA_TEST_SIZE);
> -
> /* Start copy, using first DMA channel */
> dma_chan = container_of(device->common.channels.next,
> struct dma_chan,
Acked-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
---------------------------------------------------------------------
Intel Technology Poland sp. z o.o.
z siedziba w Gdansku
ul. Slowackiego 173
80-298 Gdansk
Sad Rejonowy Gdansk Polnoc w Gdansku,
VII Wydzial Gospodarczy Krajowego Rejestru Sadowego,
numer KRS 101882
NIP 957-07-52-316
Kapital zakladowy 200.000 zl
This e-mail and any attachments may contain confidential material for
the sole use of the intended recipient(s). Any review or distribution
by others is strictly prohibited. If you are not the intended
recipient, please contact the sender and delete all copies.
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: [PATCH 1/1] dma:
[not found] <20080512205052.C1DFB7000085@mwinf2b01.orange.fr>
2008-05-13 13:04 ` [PATCH 1/1] dma: Sosnowski, Maciej
@ 2008-05-13 22:55 ` Dan Williams
1 sibling, 0 replies; 2+ messages in thread
From: Dan Williams @ 2008-05-13 22:55 UTC (permalink / raw)
To: Christophe Jaillet; +Cc: linux, Sosnowski, Maciej
On Mon, 2008-05-12 at 13:50 -0700, Christophe Jaillet wrote:
> From: Christophe Jaillet <christophe.jaillet@wanadoo.fr>
>
> Hi, here is a patch against linux/drivers/dma/iop-adma.c which :
>
> 1) Remove an explicit memset(.., 0, ...) to a variable allocated with
> kzalloc (i.e. 'dest').
>
> 2) Allocate 'src' with kmalloc instead of kzalloc as all elements of
> the
> 'src' buffer are initialized in a 'for(...)' loop just after.
>
> 3) remove useless 'sizeof(u8)', which always returns 1, when computing
> the
> size of the memory to be allocated.
>
>
> Note: this patch is based on 'linux-2.6.25.tar.bz2'
>
> Signed-off-by: Christophe Jaillet <christophe.jaillet@wanadoo.fr>
Thanks, applied.
--
Dan
^ permalink raw reply [flat|nested] 2+ messages in thread