From d42efe6bfb4eed8314c8ce3547f21954a4140399 Mon Sep 17 00:00:00 2001 From: Viresh Kumar <viresh.kumar@st.com> Date: Tue, 22 Mar 2011 17:27:25 +0530 Subject: [PATCH] dmaengine/dmatest: Pass timeout via module params When we try to test all channels present on our controller together, some channels of lower priority may be very slow as compared to others. If number of transfers is unlimited, some channels may timeout and will not finish within 3 seconds. Thus, while doing such regress testing we may need to have higher value of timeouts. This patch adds support for passing timeout value via module parameters. Default value is 3 msec, a negative value means max timeout possible. Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> --- drivers/dma/dmatest.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c index 7e1b0aa0ca508..e0888cb538d4b 100644 --- a/drivers/dma/dmatest.c +++ b/drivers/dma/dmatest.c @@ -54,6 +54,11 @@ module_param(pq_sources, uint, S_IRUGO); MODULE_PARM_DESC(pq_sources, "Number of p+q source buffers (default: 3)"); +static int timeout = 3000; +module_param(timeout, uint, S_IRUGO); +MODULE_PARM_DESC(timeout, "Transfer Timeout in msec (default: 3000), \ + Pass -1 for infinite timeout"); + /* * Initialization patterns. All bytes in the source buffer has bit 7 * set, all bytes in the destination buffer has bit 7 cleared. @@ -299,7 +304,7 @@ static int dmatest_func(void *data) dma_addr_t dma_srcs[src_cnt]; dma_addr_t dma_dsts[dst_cnt]; struct completion cmp; - unsigned long tmo = msecs_to_jiffies(3000); + unsigned long tmo = msecs_to_jiffies(timeout); u8 align = 0; total_tests++; -- 2.30.2