i.MX series have inner firmware in its ROM code: when SDMA isn't provided any firmware from Kernel or rootfs, the default inner ROM firmware will be activated. However the current driver doesn't assign any script number to this situation, and those platform running in this case would be broken. Thus this patch adds a default script number when no external firmware being loaded so that people would continue to be able to use basic scripts to run their platform without any firmware. Reported-by: Fabio Estevam <fabio.estevam@xxxxxxxxxxxxx> Signed-off-by: Nicolin Chen <Guangyu.Chen@xxxxxxxxxxxxx> --- drivers/dma/imx-sdma.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index 1522476..4e79183 100644 --- a/drivers/dma/imx-sdma.c +++ b/drivers/dma/imx-sdma.c @@ -1252,6 +1252,10 @@ static void sdma_add_scripts(struct sdma_engine *sdma, s32 *saddr_arr = (u32 *)sdma->script_addrs; int i; + /* use the default firmware in ROM if missing external firmware */ + if (!sdma->script_number) + sdma->script_number = SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V1; + for (i = 0; i < sdma->script_number; i++) if (addr_arr[i] > 0) saddr_arr[i] = addr_arr[i]; -- 1.8.4 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
