RE: [PATCH v4 2/3] dmaengine: imx-sdma: fix dma freezes

2019-09-23 Thread Robin Gong
On 2019-9-19 22:30 Philipp Puschmann wrote > For some years and since many kernel versions there are reports that the RX > UART SDMA channel stops working at some point. The workaround was to > disable DMA for RX. This commit tries to fix the problem itself. > > Due to its license i wasn't

Re: [PATCH v4 2/3] dmaengine: imx-sdma: fix dma freezes

2019-09-20 Thread Lucas Stach
On Fr, 2019-09-20 at 10:53 +0200, Philipp Puschmann wrote: > Hi Jan, > > Am 19.09.19 um 17:19 schrieb Jan Lübbe: > > Hi Philipp, > > > > see below... > > > > On Thu, 2019-09-19 at 16:29 +0200, Philipp Puschmann wrote: > > > For some years and since many kernel versions there are reports that

Re: [PATCH v4 2/3] dmaengine: imx-sdma: fix dma freezes

2019-09-20 Thread Philipp Puschmann
Hi Jan, Am 19.09.19 um 17:19 schrieb Jan Lübbe: > Hi Philipp, > > see below... > > On Thu, 2019-09-19 at 16:29 +0200, Philipp Puschmann wrote: >> For some years and since many kernel versions there are reports that the >> RX UART SDMA channel stops working at some point. The workaround was to

Re: [PATCH v4 2/3] dmaengine: imx-sdma: fix dma freezes

2019-09-19 Thread Jan Lübbe
Hi Philipp, see below... On Thu, 2019-09-19 at 16:29 +0200, Philipp Puschmann wrote: > For some years and since many kernel versions there are reports that the > RX UART SDMA channel stops working at some point. The workaround was to > disable DMA for RX. This commit tries to fix the problem