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media: ttusb-budget: Remove pci_zalloc_coherent() abuse

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Switch to a plain kzalloc() instead of pci_zalloc_coherent() to allocate
memory for the USB DMA.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Christoph Hellwig 2018-01-10 19:03:19 +01:00 committed by Bjorn Helgaas
parent 1291a0d504
commit 894f3009d6
1 changed files with 4 additions and 14 deletions
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18
drivers/media/usb/ttusb-budget/dvb-ttusb-budget.c
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@ -102,7 +102,6 @@ struct ttusb {
unsigned int isoc_in_pipe;
void *iso_buffer;
dma_addr_t iso_dma_handle;
struct urb *iso_urb[ISO_BUF_COUNT];
@ -792,26 +791,17 @@ static void ttusb_free_iso_urbs(struct ttusb *ttusb)
for (i = 0; i < ISO_BUF_COUNT; i++)
usb_free_urb(ttusb->iso_urb[i]);
pci_free_consistent(NULL,
ISO_FRAME_SIZE * FRAMES_PER_ISO_BUF *
ISO_BUF_COUNT, ttusb->iso_buffer,
ttusb->iso_dma_handle);
kfree(ttusb->iso_buffer);
}
static int ttusb_alloc_iso_urbs(struct ttusb *ttusb)
{
int i;
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",
__func__);
ttusb->iso_buffer = kcalloc(FRAMES_PER_ISO_BUF * ISO_BUF_COUNT,
ISO_FRAME_SIZE, GFP_KERNEL);
if (!ttusb->iso_buffer)
return -ENOMEM;
}
for (i = 0; i < ISO_BUF_COUNT; i++) {
struct urb *urb;