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tests: dma: fix loopback suspend and resume issue

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update dma loop test to resolve call sequence issue,
and avoid randum failure due to
dma finished fast than the dma status check. which cause suspend fails.

fixing #43739

Signed-off-by: Hake Huang <hake.huang@oss.nxp.com>
This commit is contained in:
Hake Huang 2022-03-14 13:44:27 +08:00 committed by Anas Nashif
parent a5234f3647
commit 3b576fc688
1 changed files with 15 additions and 11 deletions
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26
tests/drivers/dma/loop_transfer/src/test_dma_loop.c
View file

@ -51,9 +51,12 @@ static __aligned(16) char rx_data[TRANSFER_LOOPS][RX_BUFF_SIZE] = { { 0 } };
volatile uint8_t transfer_count;
static struct dma_config dma_cfg = {0};
static struct dma_block_config dma_block_cfg = {0};
static int test_case_id;
static void test_transfer(const struct device *dev, uint32_t id)
{
int res = 0;
transfer_count++;
if (transfer_count < TRANSFER_LOOPS) {
dma_block_cfg.block_size = strlen(tx_data);
@ -66,6 +69,16 @@ static void test_transfer(const struct device *dev, uint32_t id)
zassert_false(dma_start(dev, id),
"Not able to start next transfer %d",
transfer_count + 1);
if (test_case_id == 1) {
res = dma_suspend(dev, id);
if (res == -ENOSYS) {
TC_PRINT("dma suspend not supported\n");
dma_stop(dev, id);
} else if (res != 0) {
TC_PRINT("ERROR: suspend failed, channel %d, result %d\n", id, res);
}
test_case_id = 2;
}
}
}
@ -90,6 +103,7 @@ static int test_loop(void)
const struct device *dma;
static int chan_id;
test_case_id = 0;
TC_PRINT("DMA memory to memory transfer started on %s\n",
DMA_DEVICE_NAME);
TC_PRINT("Preparing DMA Controller\n");
@ -176,6 +190,7 @@ static int test_loop_suspend_resume(void)
static int chan_id;
int res = 0;
test_case_id = 1;
TC_PRINT("DMA memory to memory transfer started on %s\n",
DMA_DEVICE_NAME);
TC_PRINT("Preparing DMA Controller\n");
@ -235,17 +250,6 @@ static int test_loop_suspend_resume(void)
while (transfer_count == 0) {
}
res = dma_suspend(dma, chan_id);
TC_PRINT("Suspended transfers\n");
if (res == -ENOSYS) {
TC_PRINT("dma suspend not supported\n");
dma_stop(dma, chan_id);
return TC_PASS;
} else if (res != 0) {
TC_PRINT("ERROR: suspend failed, channel %d, result %d\n", chan_id, res);
return TC_FAIL;
}
TC_PRINT("Sleeping while suspended\n");
k_sleep(K_MSEC(SLEEPTIME));