Searched hist:"427 ae268" (Results 1 – 2 of 2) sorted by relevance
/openbmc/linux/include/sound/ |
H A D | memalloc.h | 427ae268 Thu Jul 15 02:58:23 CDT 2021 Takashi Iwai <tiwai@suse.de> ALSA: core: Add device-managed page allocator helper
This is a preparation for allowing devres usages more widely in various sound drivers. As a first step, this patch adds a new allocator function, snd_devm_alloc_pages(), to manage the allocated pages via devres, so that the pages will be automagically released as device unbinding.
Unlike the old snd_dma_alloc_pages(), the new function returns directly the snd_dma_buffer pointer. The caller needs NULL-check for the allocation error appropriately.
Also, since a real device pointer is mandatory for devres, SNDRV_DMA_TYPE_CONTINUOUS or SNDRV_DMA_TYPE_VMALLOC type can't be used for this function.
Link: https://lore.kernel.org/r/20210715075941.23332-2-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
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/openbmc/linux/sound/core/ |
H A D | memalloc.c | 427ae268 Thu Jul 15 02:58:23 CDT 2021 Takashi Iwai <tiwai@suse.de> ALSA: core: Add device-managed page allocator helper
This is a preparation for allowing devres usages more widely in various sound drivers. As a first step, this patch adds a new allocator function, snd_devm_alloc_pages(), to manage the allocated pages via devres, so that the pages will be automagically released as device unbinding.
Unlike the old snd_dma_alloc_pages(), the new function returns directly the snd_dma_buffer pointer. The caller needs NULL-check for the allocation error appropriately.
Also, since a real device pointer is mandatory for devres, SNDRV_DMA_TYPE_CONTINUOUS or SNDRV_DMA_TYPE_VMALLOC type can't be used for this function.
Link: https://lore.kernel.org/r/20210715075941.23332-2-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
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