mirror of https://gitee.com/openkylin/linux.git
V4L/DVB (9601): ttusb_dec: Add NULL pointer validation
Added validation for NULL pointer Signed-off-by: Douglas Schilling Landgraf <dougsland@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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@ -1157,6 +1157,12 @@ static int ttusb_dec_alloc_iso_urbs(struct ttusb_dec *dec)
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ISO_BUF_COUNT),
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&dec->iso_dma_handle);
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if (!dec->iso_buffer) {
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dprintk("%s: pci_alloc_consistent - not enough memory\n",
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__func__);
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return -ENOMEM;
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}
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memset(dec->iso_buffer, 0,
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ISO_FRAME_SIZE * (FRAMES_PER_ISO_BUF * ISO_BUF_COUNT));
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