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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2013-05-23 13:29:53 +0200 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2013-06-07 22:43:44 +0200 |
| commit | bcc567e3115055a9cc256183d72864f01286be22 (patch) | |
| tree | 2775e4359ff7d53e8656c07954683135d2e15e0c /Documentation/dmatest.txt | |
| parent | dmaengine: ste_dma40: fix pm runtime ref counting (diff) | |
| download | linux-bcc567e3115055a9cc256183d72864f01286be22.tar.xz linux-bcc567e3115055a9cc256183d72864f01286be22.zip | |
dmatest: do not allow to interrupt ongoing tests
When user interrupts ongoing transfers the dmatest may end up with console
lockup, oops, or data mismatch. This patch prevents user to abort any ongoing
test.
Documentation is updated accordingly.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reported-by: Will Deacon <will.deacon@arm.com>
Tested-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'Documentation/dmatest.txt')
| -rw-r--r-- | Documentation/dmatest.txt | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/dmatest.txt b/Documentation/dmatest.txt index 279ac0a8c5b1..132a094c7bc3 100644 --- a/Documentation/dmatest.txt +++ b/Documentation/dmatest.txt @@ -34,7 +34,7 @@ command: After a while you will start to get messages about current status or error like in the original code. -Note that running a new test will stop any in progress test. +Note that running a new test will not stop any in progress test. The following command should return actual state of the test. % cat /sys/kernel/debug/dmatest/run @@ -52,8 +52,8 @@ To wait for test done the user may perform a busy loop that checks the state. The module parameters that is supplied to the kernel command line will be used for the first performed test. After user gets a control, the test could be -interrupted or re-run with same or different parameters. For the details see -the above section "Part 2 - When dmatest is built as a module..." +re-run with the same or different parameters. For the details see the above +section "Part 2 - When dmatest is built as a module..." In both cases the module parameters are used as initial values for the test case. You always could check them at run-time by running |