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authorHook, Gary <Gary.Hook@amd.com>2019-06-19 00:03:04 +0200
committerVinod Koul <vkoul@kernel.org>2019-06-25 06:27:41 +0200
commited04b7c57c3383ed4573f1d1d1dbdc1108ba0bed (patch)
tree386d6516f6bf699d619392fdb642d723d9a4be91 /drivers/dma
parentdmaengine: dw: Distinguish ->remove() between DW and iDMA 32-bit (diff)
downloadlinux-ed04b7c57c3383ed4573f1d1d1dbdc1108ba0bed.tar.xz
linux-ed04b7c57c3383ed4573f1d1d1dbdc1108ba0bed.zip
dmaengine: dmatest: timeout value of -1 should specify infinite wait
The dmatest module parameter 'timeout' is documented as accepting a -1 to mean "infinite timeout". However, an infinite timeout is not advised, nor possible since the module parameter is an unsigned int, which won't accept a negative value. Change the parameter comment to reflect current behavior, which allows values from 0 up to 4294967295 (0xFFFFFFFF). Signed-off-by: Gary R Hook <gary.hook@amd.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/dmatest.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
index b96814a7dceb..e0c229aa1353 100644
--- a/drivers/dma/dmatest.c
+++ b/drivers/dma/dmatest.c
@@ -65,7 +65,7 @@ MODULE_PARM_DESC(pq_sources,
static int timeout = 3000;
module_param(timeout, uint, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(timeout, "Transfer Timeout in msec (default: 3000), "
- "Pass -1 for infinite timeout");
+ "Pass 0xFFFFFFFF (4294967295) for maximum timeout");
static bool noverify;
module_param(noverify, bool, S_IRUGO | S_IWUSR);
@@ -97,7 +97,7 @@ MODULE_PARM_DESC(transfer_size, "Optional custom transfer size in bytes (default
* @iterations: iterations before stopping test
* @xor_sources: number of xor source buffers
* @pq_sources: number of p+q source buffers
- * @timeout: transfer timeout in msec, -1 for infinite timeout
+ * @timeout: transfer timeout in msec, 0 - 0xFFFFFFFF (4294967295)
*/
struct dmatest_params {
unsigned int buf_size;
@@ -108,7 +108,7 @@ struct dmatest_params {
unsigned int iterations;
unsigned int xor_sources;
unsigned int pq_sources;
- int timeout;
+ unsigned int timeout;
bool noverify;
bool norandom;
int alignment;