kernel/linux.git/drivers/spi/Kconfig, branch v4.9.331

spi: Prevent adding devices below an unregistering controller

2020-12-29T12:44:48+00:00

commit ddf75be47ca748f8b12d28ac64d624354fddf189 upstream CONFIG_OF_DYNAMIC and CONFIG_ACPI allow adding SPI devices at runtime using a DeviceTree overlay or DSDT patch. CONFIG_SPI_SLAVE allows the same via sysfs. But there are no precautions to prevent adding a device below a controller that's being removed. Such a device is unusable and may not even be able to unbind cleanly as it becomes inaccessible once the controller has been torn down. E.g. it is then impossible to quiesce the device's interrupt. of_spi_notify() and acpi_spi_notify() do hold a ref on the controller, but otherwise run lockless against spi_unregister_controller(). Fix by holding the spi_add_lock in spi_unregister_controller() and bailing out of spi_add_device() if the controller has been unregistered concurrently. Fixes: ce79d54ae447 ("spi/of: Add OF notifier handler") Signed-off-by: Lukas Wunner Cc: stable@vger.kernel.org # v3.19+ Cc: Geert Uytterhoeven Cc: Octavian Purdila Cc: Pantelis Antoniou Link: https://lore.kernel.org/r/a8c3205088a969dc8410eec1eba9aface60f36af.1596451035.git.lukas@wunner.de Signed-off-by: Mark Brown [sudip: adjust context] Signed-off-by: Sudip Mukherjee Signed-off-by: Greg Kroah-Hartman

Revert "spi: bcm-qspi: shut up warning about cfi header inclusion"

2018-04-08T10:13:00+00:00

This reverts commit c30e6636ce101fd61331092c490b9d9c55b2d143. Florian writes: Sorry for noticing so late, but this appears to be bogus, there is no MTD_NORFLASH symbol being defined in 4.9, in fact I can't find this Kconfig symbol in any kernel version, so this effectively results in the driver no longer being selectable, so this sure does silence the warning. It's not good to just disable a whole driver :( So let's revert the patch for now, Arnd can work on a better build fix... Reported-by: Florian Fainelli Cc: Arnd Bergmann Signed-off-by: Greg Kroah-Hartman

spi: bcm-qspi: shut up warning about cfi header inclusion

2018-02-25T10:05:55+00:00

When CONFIG_MTD_CFI is disabled, we get a warning for this spi driver: include/linux/mtd/cfi.h:76:2: #warning No CONFIG_MTD_CFI_Ix selected. No NOR chip support can work. [-Werror=cpp] The problem here is a layering violation that was fixed in mainline kernels with a larger rework in commit 054e532f8f90 ("spi: bcm-qspi: Remove hardcoded settings and spi-nor.h dependency"). We can't really backport that to stable kernels, so this just adds a Kconfig dependency to make it either build cleanly or force it to be disabled. Signed-off-by: Arnd Bergmann Signed-off-by: Greg Kroah-Hartman

Revert "spi: SPI_FSL_DSPI should depend on HAS_DMA"

2017-12-14T08:28:16+00:00

This reverts commit dadab2d4e3cf708ceba22ecddd94aedfecb39199. Not required on < 4.10. Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

spi: SPI_FSL_DSPI should depend on HAS_DMA

2017-11-30T08:39:14+00:00

[ Upstream commit dadab2d4e3cf708ceba22ecddd94aedfecb39199 ] If NO_DMA=y: ERROR: "bad_dma_ops" [drivers/spi/spi-fsl-dspi.ko] undefined! Add a dependency on HAS_DMA to fix this. Signed-off-by: Geert Uytterhoeven Signed-off-by: Mark Brown Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

Merge remote-tracking branches 'spi/topic/rspi', 'spi/topic/sc18is602', 'spi/topic/sh-msiof', 'spi/topic/spidev-test' and 'spi/topic/st-ssc4' into spi-next

2016-09-30T16:14:18+00:00

Merge remote-tracking branches 'spi/topic/octeon', 'spi/topic/pic32-sqi', 'spi/topic/pxa2xx' and 'spi/topic/qup' into spi-next

2016-09-30T16:14:14+00:00

Merge remote-tracking branches 'spi/topic/fsl-espi', 'spi/topic/imx', 'spi/topic/jcore', 'spi/topic/loopback' and 'spi/topic/meson' into spi-next

2016-09-30T16:14:10+00:00

spi: bcm-qspi: Add Broadcom MSPI driver

2016-09-14T17:03:32+00:00

Master SPI driver for Broadcom settop, iProc SoCs. The driver is used for devices that use SPI protocol on BRCMSTB, NSP, NS2 SoCs. SoC platform driver call exported porbe(), remove() and suspend/resume pm_ops implemented in this common driver. Signed-off-by: Kamal Dasu Signed-off-by: Yendapally Reddy Dhananjaya Reddy Signed-off-by: Mark Brown

spi: sh-msiof: Use ARCH_SHMOBILE instead of SUPERH

2016-09-01T19:53:52+00:00

"spi_sh_msiof" is used on sh7723 and sh7724 only. As all of the above select ARCH_SHMOBILE, restrict its driver dependencies from SUPERH to ARCH_SHMOBILE. Signed-off-by: Geert Uytterhoeven Reviewed-by: Simon Horman Signed-off-by: Mark Brown