kernel/drivers/spi/spi-loopback-test.c, branch linux-5.1.y

spi: loopback-test: implement testing with no CS

2017-07-26T12:08:56Z

To run spi-loopback-tests on HW without modifications, we need to disable Chip Select. This should avoid surprising side effects for SPI devices by testing patterns. Signed-off-by: Oleksij Rempel Signed-off-by: Mark Brown

spi: loopback-test: make several module parameters static

2017-07-18T13:10:01Z

Several module parameters are local to the source, so make them static. Cleans up several sparse warnings such as: "symbol 'loop_req' was not declared. Should it be static?" Signed-off-by: Colin Ian King Signed-off-by: Mark Brown

spi: loopback-test: provide loop_req option.

2017-07-17T14:27:26Z

Provide a module parameter to request internal loop by the SPI master controller. This should make loop testing easier without extra HW modification. For test automation a logic analyzer is recommended for host controller-independent verification. An example test rig configuration and procedure: i.MX6S RIoRBoard Logic Analyzer ----------------------------------------- (J13 4) GND ------------- GND (J13 6) CSPI3-CLK ------> PIN 3 (J13 8) CSPI3-MOSI <----- PIN 2 ^ - internal loop configured by SPI_LOOP | or can be user external jamper. (J13 10) CSPI3-MISO -----> PIN 1 grab some data and decode it: sigrok-cli -d fx2lafw --time 160000 --config samplerate=10m \ --channels 0-2 -o dump.sr sigrok-cli -i dump.sr -P spi:mosi=1:clk=2 > result_for_regression_tests Signed-off-by: Oleksij Rempel Signed-off-by: Mark Brown

spi: loopback-test: Fix kfree() NULL pointer error.

2017-06-28T19:16:41Z

Here, rx/tx allocation can fail. So avoid kvfree call with NULL pointer. Signed-off-by: Arvind Yadav Signed-off-by: Mark Brown

spi: loopback-test: fix spelling mistake: "reruning" -> "rerunning"

2017-06-28T19:03:09Z

trivial fix to spelling mistake in dev_info error message Signed-off-by: Colin Ian King Signed-off-by: Mark Brown

Merge remote-tracking branches 'spi/topic/spidev', 'spi/topic/spidev-test', 'spi/topic/sunxi', 'spi/topic/tegra' and 'spi/topic/test' into spi-next

2017-04-26T14:58:16Z

spi: loopback-test: fix spelling mistake: "minimam" -> "minimum"

2017-03-30T10:15:53Z

trivial fix to spelling mistake in dev_err error message Signed-off-by: Colin Ian King Signed-off-by: Mark Brown

spi: loopback-test: fix potential integer overflow on multiple

2017-03-20T16:11:39Z

A multiplication of 8U * xfer-len with the type of a 32 bit unsigned int is evaluated using 32 bit arithmetic and then used in a context that expects an expression of type unsigned long long (64 bits). Avoid any potential overflow by casting BITS_PER_BYTE to unsigned long long. Detected by CoverityScan, CID#1419691 ("Unintentional integer overflow") Fixes: ea9936f324356 ("spi: loopback-test: add elapsed time check") Signed-off-by: Colin Ian King Signed-off-by: Mark Brown

spi: loopback-test: add test spi_message with delay after transfers

2017-03-17T21:54:12Z

This adds a new test to check whether the spi_transfer.delay_usecs setting has properly taken effect. Signed-off-by: Akinobu Mita Signed-off-by: Mark Brown

spi: loopback-test: add elapsed time check

2017-03-17T21:54:08Z

This adds checks whether the elapsed time is longer than the minimam estimated time. The estimated time is calculated with the total transfer length per clock rate and optional spi_transfer.delay_usecs. Signed-off-by: Akinobu Mita Signed-off-by: Mark Brown