Mika Westerberg <ext-mika.1.westerberg@xxxxxxxxx> writes: > If we are softbooting another kernel using kexec, DMA controller state is not > known when we are performing omap_init_dma(). It is possible that some DMA > channels are already active. For example after kexec we get: > > <4>IRQ 0020 for non-allocated DMAchannel 5 > <4>IRQ 0020 for non-allocated DMAchannel 5 > <4>IRQ 0020 for non-allocated DMAchannel 5 > <4>IRQ 0020 for non-allocated DMAchannel 5 > <4>IRQ 0020 for non-allocated DMAchannel 5 > > To prevent any weird things happening, we perform soft reset for the controller > and disable all per channel interrupts. > > Signed-off-by: Mika Westerberg <ext-mika.1.westerberg@xxxxxxxxx> This is a good fix, but we get reset of DMA (and all other blocks) for free when switching to hwmod. Here's a good reason to convert DMA to hwmod. Kevin -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
