Merge tag 'dmaengine-fix-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine (ccc1d052) · Commits · 戴 / test

drivers/dma/dmatest.c

+21 −5

Original line number	Diff line number	Diff line
		@@ -129,6 +129,7 @@ struct dmatest_params {
		* @nr_channels: number of channels under test
		* @lock: access protection to the fields of this structure
		* @did_init: module has been initialized completely
		* @last_error: test has faced configuration issues
		*/
		static struct dmatest_info {
		/* Test parameters */
		@@ -137,6 +138,7 @@ static struct dmatest_info {
		/* Internal state */
		struct list_head channels;
		unsigned int nr_channels;
		int last_error;
		struct mutex lock;
		bool did_init;
		} test_info = {
		@@ -1184,11 +1186,23 @@ static int dmatest_run_set(const char val, const struct kernel_param kp)
		return ret;
		} else if (dmatest_run) {
		if (!is_threaded_test_pending(info)) {
		/*
		* We have nothing to run. This can be due to:
		*/
		ret = info->last_error;
		if (ret) {
		/* 1) Misconfiguration */
		pr_err("Channel misconfigured, can't continue\n");
		mutex_unlock(&info->lock);
		return ret;
		} else {
		/* 2) We rely on defaults */
		pr_info("No channels configured, continue with any\n");
		if (!is_threaded_test_run(info))
		stop_threaded_test(info);
		add_threaded_test(info);
		}
		}
		start_threaded_tests(info);
		} else {
		stop_threaded_test(info);
		@@ -1204,7 +1218,7 @@ static int dmatest_chan_set(const char val, const struct kernel_param kp)
		struct dmatest_info *info = &test_info;
		struct dmatest_chan *dtc;
		char chan_reset_val[20];
		int ret = 0;
		int ret;

		mutex_lock(&info->lock);
		ret = param_set_copystring(val, kp);
		@@ -1259,12 +1273,14 @@ static int dmatest_chan_set(const char val, const struct kernel_param kp)
		goto add_chan_err;
		}

		info->last_error = ret;
		mutex_unlock(&info->lock);

		return ret;

		add_chan_err:
		param_set_copystring(chan_reset_val, kp);
		info->last_error = ret;
		mutex_unlock(&info->lock);

		return ret;

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