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authorViresh Kumar <viresh.kumar@st.com>2011-03-22 12:57:25 +0100
committerDan Williams <dan.j.williams@intel.com>2011-03-22 19:12:29 +0100
commitd42efe6bfb4eed8314c8ce3547f21954a4140399 (patch)
tree180057c663bf6bbfdbdcc7561254d9b86db5c0a1 /drivers/dma
parentdma: let IMX_DMA depend on IMX_HAVE_DMA_V1 instead of an explicit list of SoCs (diff)
downloadlinux-d42efe6bfb4eed8314c8ce3547f21954a4140399.tar.xz
linux-d42efe6bfb4eed8314c8ce3547f21954a4140399.zip
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>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/dmatest.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
index 7e1b0aa0ca50..e0888cb538d4 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++;