On Sat, Feb 03, 2018 at 01:28:06PM +0530, Abhishek Sahu wrote: > The QUP BSLP BAM generates the following error sometimes if the > current I2C DMA transfer fails and the flush operation has been > scheduled > > “bam-dma-engine 7884000.dma: Cannot free busy channel” > > If any I2C error comes during BAM DMA transfer, then the QUP I2C > interrupt will be generated and the flush operation will be > carried out to make i2c consume all scheduled DMA transfer. > Currently, the same completion structure is being used for BAM > transfer which has already completed without reinit. It will make > flush operation wait_for_completion_timeout completed immediately > and will proceed for freeing the DMA resources where the > descriptors are still in process. > > Signed-off-by: Abhishek Sahu <absahu@xxxxxxxxxxxxxx> Reviewed-by: Andy Gross <andy.gross@xxxxxxxxxx>
