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| author | Nishanth Menon <nm@ti.com> | 2014-06-12 17:15:22 +0530 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2014-07-21 23:32:51 -0700 |
| commit | 76be4a54157ab0059fb29d8d516db46d239812e2 (patch) | |
| tree | 434db5329e5a6facbc1ca84bfac6c20daf9c7972 /init/do_mounts_md.c | |
| parent | 3db53918e306d3960bf9e12eea8b2fd3f7d0fd62 (diff) | |
| download | linux-76be4a54157ab0059fb29d8d516db46d239812e2.tar.gz | |
ARM: OMAP2+: DMA: remove requirement of irq for platform-dma driver
we have currently 2 DMA drivers that try to co-exist. drivers/dma/omap-dma.c which registers it's own IRQ and is device tree aware and uses arch/arm/plat-omap/dma.c instance created by arch/arm/mach-omap2/dma.c to maintain channel usage (omap_request_dma). Currently both try to register interrupts and mach-omap2/plat-omap dma.c attempts to use the IRQ number registered by hwmod to register it's own interrupt handler. Now, there is no reasonable way of static allocating DMA irq in GIC SPI when we use crossbar. However, since the dma_chan structure is freed as a result of IRQ not being present due to devm allocation, maintaining information of channel by platform code fails at a later point in time when that region of memory is reused. So, if hwmod does not indicate an IRQ number, then, assume that dma-engine will take care of the interrupt handling. Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'init/do_mounts_md.c')
0 files changed, 0 insertions, 0 deletions