talos-op-linux/drivers/spi/spi-gpio.c, branch master

Merge branch 'for-5.4' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi into spi-5.5

2019-10-08T18:12:28+00:00

spi: gpio: Look for a device node instead of match

2019-10-07T12:55:40+00:00

This driver doesn't do anything with the match for the device node. The logic is the same as looking to see if a device node exists or not because this driver wouldn't probe unless there is a device node match when the device is created from DT. Just test for the presence of the device node to simplify and avoid referencing a potentially undefined match table when CONFIG_OF=n. Cc: Arnd Bergmann Cc: Geert Uytterhoeven Cc: Mark Brown Cc: Rob Herring Cc: Frank Rowand Cc: Signed-off-by: Stephen Boyd Link: https://lore.kernel.org/r/20191004214334.149976-9-swboyd@chromium.org Signed-off-by: Mark Brown

spi: gpio: prevent memory leak in spi_gpio_probe

2019-10-01T17:38:52+00:00

In spi_gpio_probe an SPI master is allocated via spi_alloc_master, but this controller should be released if devm_add_action_or_reset fails, otherwise memory leaks. In order to avoid leak spi_contriller_put must be called in case of failure for devm_add_action_or_reset. Fixes: 8b797490b4db ("spi: gpio: Make sure spi_master_put() is called in every error path") Signed-off-by: Navid Emamdoost Link: https://lore.kernel.org/r/20190930205241.5483-1-navid.emamdoost@gmail.com Signed-off-by: Mark Brown

spi-gpio: Use PTR_ERR_OR_ZERO() in spi_gpio_request()

2019-09-09T10:05:39+00:00

Simplify this function implementation by using a known function. Generated by: scripts/coccinelle/api/ptr_ret.cocci Signed-off-by: Markus Elfring Reviewed-by: Geert Uytterhoeven Link: https://lore.kernel.org/r/b2dd074a-1693-3aea-42b4-da1f5ec155c4@web.de Signed-off-by: Mark Brown

spi: gpio: Add SPI_MASTER_GPIO_SS flag

2019-07-17T17:51:21+00:00

The GPIO SPI master has some code in its local CS callback to set the initial sck GPIO value. This was lost in the commit converting it to use SPI core GPIO handling as this callback isn't called if the internal GPIO handling is active. Add the special SPI_MASTER_GPIO_SS to ascertain it gets called anyway so we get the initial SCK setting right. There is some platform provided GPIO handling there as well but this will be skipped as the cs_gpios will be NULL. My test targets seem not to care about the initial SCK value so I am uncertain if this is a regression, but to preserve the previous semantic we better do this. Cc: Andrey Smirnov Fixes: 249e2632dcd0 ("spi: gpio: Don't request CS GPIO in DT use-case") Signed-off-by: Linus Walleij Link: https://lore.kernel.org/r/20190716204651.7743-1-linus.walleij@linaro.org Signed-off-by: Mark Brown

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157

2019-05-30T18:26:37+00:00

Based on 3 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version [author] [graeme] [gregory] [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema] [hk] [hemahk]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1105 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Richard Fontana Reviewed-by: Kate Stewart Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de Signed-off-by: Greg Kroah-Hartman

spi: gpio: Use devm_spi_register_master()

2019-04-08T07:11:18+00:00

Replace spi_bitbang_start() with a combination of spi_bitbang_init() and devm_spi_register_master() and drop all of the explicit cleanup-related code that's no longer necessary. Signed-off-by: Andrey Smirnov Cc: Mark Brown Cc: Chris Healy Cc: linux-spi@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Mark Brown

spi: gpio: Make sure spi_master_put() is called in every error path

2019-04-08T07:10:02+00:00

There's a number of failure paths in spi_gpio_probe() that do not call spi_master_put() potentially leaking memory. Fix this problem by registering a cleanup funciont via devm_add_action_or_reset() right after SPI controller is allocated. Signed-off-by: Andrey Smirnov Cc: Mark Brown Cc: Chris Healy Cc: linux-spi@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Mark Brown

spi: gpio: Drop unused pdev field in struct spi_gpio

2019-04-05T03:24:13+00:00

There's no code using 'pdev' field in struct spi_gpio. Drop it. Signed-off-by: Andrey Smirnov Cc: Mark Brown Cc: Chris Healy Cc: linux-spi@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Mark Brown

spi: gpio: Drop mflags argument from spi_gpio_request()

2019-04-05T03:23:50+00:00

The logic of setting mflags in spi_gpio_request() is very simple and there isn't much benefit in having it in that function. Move all of that code outside into spi_gpio_probe() in order to simplify things. Signed-off-by: Andrey Smirnov Cc: Mark Brown Cc: Chris Healy Cc: linux-spi@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Mark Brown