On Tue, 2010-08-31 at 08:48 +0900, Kyungmin Park wrote: > writel(S5PC110_DMA_TRANS_CMD_TR, base + S5PC110_DMA_TRANS_CMD); > > + timeout = jiffies + msec_to_jiffies(20); Are you completely absolutely 100% totally sure 20msecs is enough? -- Best Regards, Artem Bityutskiy (Битюцкий Артём)