From 0b6a2c9cf4a00f54a0916499ece8a5cf3cced385 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 1 Feb 2019 12:14:53 +0100 Subject: ALSA: isa: Avoid passing NULL to memory allocators We used to pass NULL to memory allocators for ISA devices due to historical reasons. But we prefer rather a proper device object to be assigned, so let's fix it by replacing snd_dma_isa_data() call with card->dev reference, and kill snd_dma_isa_data() definition. Reviewed-by: Christoph Hellwig Signed-off-by: Takashi Iwai --- Documentation/sound/kernel-api/writing-an-alsa-driver.rst | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'Documentation/sound') diff --git a/Documentation/sound/kernel-api/writing-an-alsa-driver.rst b/Documentation/sound/kernel-api/writing-an-alsa-driver.rst index 7c2f2032d30a..6b154dbb02cc 100644 --- a/Documentation/sound/kernel-api/writing-an-alsa-driver.rst +++ b/Documentation/sound/kernel-api/writing-an-alsa-driver.rst @@ -3520,14 +3520,14 @@ allocator will try to get an area as large as possible within the given size. The second argument (type) and the third argument (device pointer) are -dependent on the bus. In the case of the ISA bus, pass -:c:func:`snd_dma_isa_data()` as the third argument with +dependent on the bus. For normal devices, pass the device pointer +(typically identical as ``card->dev``) to the third argument with ``SNDRV_DMA_TYPE_DEV`` type. For the continuous buffer unrelated to the bus can be pre-allocated with ``SNDRV_DMA_TYPE_CONTINUOUS`` type and the ``snd_dma_continuous_data(GFP_KERNEL)`` device pointer, where -``GFP_KERNEL`` is the kernel allocation flag to use. For the PCI -scatter-gather buffers, use ``SNDRV_DMA_TYPE_DEV_SG`` with -``snd_dma_pci_data(pci)`` (see the `Non-Contiguous Buffers`_ +``GFP_KERNEL`` is the kernel allocation flag to use. For the +scatter-gather buffers, use ``SNDRV_DMA_TYPE_DEV_SG`` with the device +pointer (see the `Non-Contiguous Buffers`_ section). Once the buffer is pre-allocated, you can use the allocator in the -- cgit v1.2.1