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Date: Fri, 27 Jun 2014 10:20:33 +0200
From: Hans Verkuil <hverkuil@...all.nl>
To: Joe Perches <joe@...ches.com>, linux-kernel@...r.kernel.org
CC: Mauro Carvalho Chehab <m.chehab@...sung.com>,
linux-media@...r.kernel.org
Subject: Re: [PATCH 07/22] media: Use pci_zalloc_consistent
Hi Joe,
For the media subsystem:
Acked-by: Hans Verkuil <hans.verkuil@...co.com>
Regards,
Hans
On 06/23/2014 03:41 PM, Joe Perches wrote:
> Remove the now unnecessary memset too.
>
> Signed-off-by: Joe Perches <joe@...ches.com>
> ---
> drivers/media/common/saa7146/saa7146_core.c | 15 ++++++---------
> drivers/media/common/saa7146/saa7146_fops.c | 5 +++--
> drivers/media/pci/bt8xx/bt878.c | 16 ++++------------
> drivers/media/pci/ngene/ngene-core.c | 7 +++----
> drivers/media/usb/ttusb-budget/dvb-ttusb-budget.c | 11 +++--------
> drivers/media/usb/ttusb-dec/ttusb_dec.c | 11 +++--------
> 6 files changed, 22 insertions(+), 43 deletions(-)
>
> diff --git a/drivers/media/common/saa7146/saa7146_core.c b/drivers/media/common/saa7146/saa7146_core.c
> index 34b0d0d..97afee6 100644
> --- a/drivers/media/common/saa7146/saa7146_core.c
> +++ b/drivers/media/common/saa7146/saa7146_core.c
> @@ -421,23 +421,20 @@ static int saa7146_init_one(struct pci_dev *pci, const struct pci_device_id *ent
> err = -ENOMEM;
>
> /* get memory for various stuff */
> - dev->d_rps0.cpu_addr = pci_alloc_consistent(pci, SAA7146_RPS_MEM,
> - &dev->d_rps0.dma_handle);
> + dev->d_rps0.cpu_addr = pci_zalloc_consistent(pci, SAA7146_RPS_MEM,
> + &dev->d_rps0.dma_handle);
> if (!dev->d_rps0.cpu_addr)
> goto err_free_irq;
> - memset(dev->d_rps0.cpu_addr, 0x0, SAA7146_RPS_MEM);
>
> - dev->d_rps1.cpu_addr = pci_alloc_consistent(pci, SAA7146_RPS_MEM,
> - &dev->d_rps1.dma_handle);
> + dev->d_rps1.cpu_addr = pci_zalloc_consistent(pci, SAA7146_RPS_MEM,
> + &dev->d_rps1.dma_handle);
> if (!dev->d_rps1.cpu_addr)
> goto err_free_rps0;
> - memset(dev->d_rps1.cpu_addr, 0x0, SAA7146_RPS_MEM);
>
> - dev->d_i2c.cpu_addr = pci_alloc_consistent(pci, SAA7146_RPS_MEM,
> - &dev->d_i2c.dma_handle);
> + dev->d_i2c.cpu_addr = pci_zalloc_consistent(pci, SAA7146_RPS_MEM,
> + &dev->d_i2c.dma_handle);
> if (!dev->d_i2c.cpu_addr)
> goto err_free_rps1;
> - memset(dev->d_i2c.cpu_addr, 0x0, SAA7146_RPS_MEM);
>
> /* the rest + print status message */
>
> diff --git a/drivers/media/common/saa7146/saa7146_fops.c b/drivers/media/common/saa7146/saa7146_fops.c
> index eda01bc..a776a80 100644
> --- a/drivers/media/common/saa7146/saa7146_fops.c
> +++ b/drivers/media/common/saa7146/saa7146_fops.c
> @@ -520,14 +520,15 @@ int saa7146_vv_init(struct saa7146_dev* dev, struct saa7146_ext_vv *ext_vv)
> configuration data) */
> dev->ext_vv_data = ext_vv;
>
> - vv->d_clipping.cpu_addr = pci_alloc_consistent(dev->pci, SAA7146_CLIPPING_MEM, &vv->d_clipping.dma_handle);
> + vv->d_clipping.cpu_addr =
> + pci_zalloc_consistent(dev->pci, SAA7146_CLIPPING_MEM,
> + &vv->d_clipping.dma_handle);
> if( NULL == vv->d_clipping.cpu_addr ) {
> ERR("out of memory. aborting.\n");
> kfree(vv);
> v4l2_ctrl_handler_free(hdl);
> return -1;
> }
> - memset(vv->d_clipping.cpu_addr, 0x0, SAA7146_CLIPPING_MEM);
>
> saa7146_video_uops.init(dev,vv);
> if (dev->ext_vv_data->capabilities & V4L2_CAP_VBI_CAPTURE)
> diff --git a/drivers/media/pci/bt8xx/bt878.c b/drivers/media/pci/bt8xx/bt878.c
> index d0c281f..1176583 100644
> --- a/drivers/media/pci/bt8xx/bt878.c
> +++ b/drivers/media/pci/bt8xx/bt878.c
> @@ -101,28 +101,20 @@ static int bt878_mem_alloc(struct bt878 *bt)
> if (!bt->buf_cpu) {
> bt->buf_size = 128 * 1024;
>
> - bt->buf_cpu =
> - pci_alloc_consistent(bt->dev, bt->buf_size,
> - &bt->buf_dma);
> -
> + bt->buf_cpu = pci_zalloc_consistent(bt->dev, bt->buf_size,
> + &bt->buf_dma);
> if (!bt->buf_cpu)
> return -ENOMEM;
> -
> - memset(bt->buf_cpu, 0, bt->buf_size);
> }
>
> if (!bt->risc_cpu) {
> bt->risc_size = PAGE_SIZE;
> - bt->risc_cpu =
> - pci_alloc_consistent(bt->dev, bt->risc_size,
> - &bt->risc_dma);
> -
> + bt->risc_cpu = pci_zalloc_consistent(bt->dev, bt->risc_size,
> + &bt->risc_dma);
> if (!bt->risc_cpu) {
> bt878_mem_free(bt);
> return -ENOMEM;
> }
> -
> - memset(bt->risc_cpu, 0, bt->risc_size);
> }
>
> return 0;
> diff --git a/drivers/media/pci/ngene/ngene-core.c b/drivers/media/pci/ngene/ngene-core.c
> index 970e833..37dc149 100644
> --- a/drivers/media/pci/ngene/ngene-core.c
> +++ b/drivers/media/pci/ngene/ngene-core.c
> @@ -1078,12 +1078,11 @@ static int AllocCommonBuffers(struct ngene *dev)
> dev->ngenetohost = dev->FWInterfaceBuffer + 256;
> dev->EventBuffer = dev->FWInterfaceBuffer + 512;
>
> - dev->OverflowBuffer = pci_alloc_consistent(dev->pci_dev,
> - OVERFLOW_BUFFER_SIZE,
> - &dev->PAOverflowBuffer);
> + dev->OverflowBuffer = pci_zalloc_consistent(dev->pci_dev,
> + OVERFLOW_BUFFER_SIZE,
> + &dev->PAOverflowBuffer);
> if (!dev->OverflowBuffer)
> return -ENOMEM;
> - memset(dev->OverflowBuffer, 0, OVERFLOW_BUFFER_SIZE);
>
> for (i = STREAM_VIDEOIN1; i < MAX_STREAM; i++) {
> int type = dev->card_info->io_type[i];
> diff --git a/drivers/media/usb/ttusb-budget/dvb-ttusb-budget.c b/drivers/media/usb/ttusb-budget/dvb-ttusb-budget.c
> index f8a60c1..0d3194a 100644
> --- a/drivers/media/usb/ttusb-budget/dvb-ttusb-budget.c
> +++ b/drivers/media/usb/ttusb-budget/dvb-ttusb-budget.c
> @@ -804,11 +804,9 @@ static int ttusb_alloc_iso_urbs(struct ttusb *ttusb)
> {
> int i;
>
> - ttusb->iso_buffer = pci_alloc_consistent(NULL,
> - ISO_FRAME_SIZE *
> - FRAMES_PER_ISO_BUF *
> - ISO_BUF_COUNT,
> - &ttusb->iso_dma_handle);
> + ttusb->iso_buffer = pci_zalloc_consistent(NULL,
> + ISO_FRAME_SIZE * FRAMES_PER_ISO_BUF * ISO_BUF_COUNT,
> + &ttusb->iso_dma_handle);
>
> if (!ttusb->iso_buffer) {
> dprintk("%s: pci_alloc_consistent - not enough memory\n",
> @@ -816,9 +814,6 @@ static int ttusb_alloc_iso_urbs(struct ttusb *ttusb)
> return -ENOMEM;
> }
>
> - memset(ttusb->iso_buffer, 0,
> - ISO_FRAME_SIZE * FRAMES_PER_ISO_BUF * ISO_BUF_COUNT);
> -
> for (i = 0; i < ISO_BUF_COUNT; i++) {
> struct urb *urb;
>
> diff --git a/drivers/media/usb/ttusb-dec/ttusb_dec.c b/drivers/media/usb/ttusb-dec/ttusb_dec.c
> index 29724af..15ab584 100644
> --- a/drivers/media/usb/ttusb-dec/ttusb_dec.c
> +++ b/drivers/media/usb/ttusb-dec/ttusb_dec.c
> @@ -1151,11 +1151,9 @@ static int ttusb_dec_alloc_iso_urbs(struct ttusb_dec *dec)
>
> dprintk("%s\n", __func__);
>
> - dec->iso_buffer = pci_alloc_consistent(NULL,
> - ISO_FRAME_SIZE *
> - (FRAMES_PER_ISO_BUF *
> - ISO_BUF_COUNT),
> - &dec->iso_dma_handle);
> + dec->iso_buffer = pci_zalloc_consistent(NULL,
> + ISO_FRAME_SIZE * (FRAMES_PER_ISO_BUF * ISO_BUF_COUNT),
> + &dec->iso_dma_handle);
>
> if (!dec->iso_buffer) {
> dprintk("%s: pci_alloc_consistent - not enough memory\n",
> @@ -1163,9 +1161,6 @@ static int ttusb_dec_alloc_iso_urbs(struct ttusb_dec *dec)
> return -ENOMEM;
> }
>
> - memset(dec->iso_buffer, 0,
> - ISO_FRAME_SIZE * (FRAMES_PER_ISO_BUF * ISO_BUF_COUNT));
> -
> for (i = 0; i < ISO_BUF_COUNT; i++) {
> struct urb *urb;
>
>
--
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