Re: [PATCH 07/22] media: Use pci_zalloc_consistent

From: Mauro Carvalho Chehab
Date: Fri Jun 27 2014 - 06:55:32 EST

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In reply to: Hans Verkuil: "Re: [PATCH 07/22] media: Use pci_zalloc_consistent"
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Em Fri, 27 Jun 2014 10:20:33 +0200
Hans Verkuil <hverkuil@xxxxxxxxx> escreveu:

> Hi Joe,
>
> For the media subsystem:
>
> Acked-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>

Err... I would rather prefer to apply this patch on our subsystem, in order
to avoid potential conflicts with other patches. Not really a big deal, as
those drivers aren't being touched for a while, but who knows what patches
may appear for them up to the next merge tree?

Regards,
Mauro

>
> Regards,
>
> Hans
>
> On 06/23/2014 03:41 PM, Joe Perches wrote:
> > Remove the now unnecessary memset too.
> >
> > Signed-off-by: Joe Perches <joe@xxxxxxxxxxx>
> > ---
> > 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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Next message: Thierry Reding: "Re: [RFC 09/10] drm/tegra: Add IOMMU support"
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In reply to: Hans Verkuil: "Re: [PATCH 07/22] media: Use pci_zalloc_consistent"
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