Hello, cc'ing Harvey. On Wed, Feb 24, 2016 at 01:42:33PM +0100, Geert Uytterhoeven wrote: > With CONFIG_DMA_API_DEBUG=y, I sometimes get the below warning > on r8a7795/salvator-x. My tree is based on renesas-drivers-2016-02-23-v4.5-rc5. > > sata_rcar ee300000.sata: DMA-API: cpu touching an active dma mapped > cacheline [cln=0x000000000090fba0] > ------------[ cut here ]------------ > WARNING: at lib/dma-debug.c:604 > Modules linked in: > > CPU: 3 PID: 1619 Comm: bash Tainted: G W > 4.5.0-rc5-salvator-x-04682-g420edda42525a16f-dirty #541 > Hardware name: Renesas Salvator-X board based on r8a7795 (DT) > task: ffffffc03bb30200 ti: ffffffc03b170000 task.ti: ffffffc03b170000 > PC is at debug_dma_assert_idle+0x180/0x1d0 Is this the problem fixed by the following patch from Harvey? http://lkml.kernel.org/g/CAMuHMdU0=_TJVfy=-zXWHkfJSWH_fJULBrL8J9T60QS48WbYcQ@xxxxxxxxxxxxxx Thanks. -- tejun
