drivers/spi/spi-loopback-test.c

3  *  linux/drivers/spi/spi-loopback-test.c
7  *  Loopback test driver to test several typical spi_message conditions
37 /* the device is jumpered for loopback - enabling some rx_buf tests */
38 static int loopback;  variable
39 module_param(loopback, int, 0);
40 MODULE_PARM_DESC(loopback,
41 		 "if set enable loopback mode, where the rx_buf "	\
335 	dev_info(&spi->dev, "Executing spi-loopback-tests\n");  in spi_loopback_test_probe()
339 	dev_info(&spi->dev, "Finished spi-loopback-tests with return: %i\n",  in spi_loopback_test_probe()
347 	{ .compatible	= "linux,spi-loopback-test", },
360 		.name = "spi-loopback-test",
523 			"loopback strangeness - rx changed outside of allowed range at: %pK\n",  in spi_check_rx_ranges()
573 	/* checks rx_buffer pattern are valid with loopback or without */  in spi_test_check_loopback_result()
580 	/* if we run without loopback, then return now */  in spi_test_check_loopback_result()
581 	if (!loopback)  in spi_test_check_loopback_result()
603 					"loopback strangeness - we expect 0x00 or 0xff, but not 0x%02x\n",  in spi_test_check_loopback_result()
620 		"loopback strangeness - transfer mismatch on byte %04zx - expected 0x%02x, but got 0x%02x\n",  in spi_test_check_loopback_result()