kernel/linux.git/arch/mips/alchemy/common, branch v6.12.91

MIPS: Remove unused function dump_au1000_dma_channel() in dma.c

2024-08-29T08:38:18+00:00

The dump_au1000_dma_channel() has not been used since commit d56b9b9c464a ("[PATCH] The scheduled removal of some OSS drivers"), so remove it. Signed-off-by: Gaosheng Cui Signed-off-by: Thomas Bogendoerfer

MIPS: Alchemy: Switch to use kmemdup_array()

2024-06-11T08:13:36+00:00

Let the kememdup_array() take care about multiplication and possible overflows. Signed-off-by: Andy Shevchenko Signed-off-by: Thomas Bogendoerfer

MIPS: Alchemy: Use kcalloc() instead of kzalloc()

2024-02-20T12:36:34+00:00

As noted in the "Deprecated Interfaces, Language Features, Attributes, and Conventions" documentation [1], size calculations (especially multiplication) should not be performed in memory allocator (or similar) function arguments due to the risk of them overflowing. This could lead to values wrapping around and a smaller allocation being made than the caller was expecting. Using those allocations could lead to linear overflows of heap memory and other misbehaviors. So, use the purpose specific kcalloc() function instead of the argument size * count in the kzalloc() function. Link: https://www.kernel.org/doc/html/next/process/deprecated.html#open-coded-arithmetic-in-allocator-arguments [1] Link: https://github.com/KSPP/linux/issues/162 Signed-off-by: Erick Archer Reviewed-by: Gustavo A. R. Silva Signed-off-by: Thomas Bogendoerfer

MIPS: Alchemy: Fix missing prototypes

2024-01-22T09:32:36+00:00

We have a number of missing prototypes warnings for board_setup(), alchemy_set_lpj() and prom_init_cmdline(), prom_getenv() and prom_get_ethernet_addr(). Fix those by providing definitions for the first two functions in au1000.h which is included everywhere relevant, and including prom.h for the last three. Signed-off-by: Florian Fainelli Signed-off-by: Thomas Bogendoerfer

Merge 6.4-rc5 into tty-next

2023-06-05T05:41:04+00:00

We need the tty fixes in here as well. Signed-off-by: Greg Kroah-Hartman

MIPS: Alchemy: fix dbdma2

2023-05-23T09:00:02+00:00

Various fixes for the Au1200/Au1550/Au1300 DBDMA2 code: - skip cache invalidation if chip has working coherency circuitry. - invalidate KSEG0-portion of the (physical) data address. - force the dma channel doorbell write out to bus immediately with a sync. Signed-off-by: Thomas Bogendoerfer

serial: 8250: RT288x/Au1xxx code away from core

2023-05-13T10:47:26+00:00

A non-trivial amount of RT288x/Au1xxx code is encapsulated into ifdeffery in 8250_port / 8250_early and some if UPIO_AU blocks. Create a separate file from them. Also handle errors properly in the cases where RT288x/Au1xxx code is not configured. It seems that 0x1000 mapsize is likely overkill but I've kept it the same as previously (the value was shrunk to that value in commit b2b13cdfd05e ("SERIAL 8250: Fixes for Alchemy UARTs.")). Seemingly, the driver only needs to access register at 0x28 for the divisor latch. The Kconfig side is a bit tricky. As SERIAL_8250_RT288X is bool it can only be =y. It is possible to have SERIAL_8250=m + SERIAL_8250_RT288X=y which required altering when 8250/ is included or the rt288x would not be built. Signed-off-by: Ilpo Järvinen Link: https://lore.kernel.org/r/20230511121029.13128-5-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman

mips: alchemy: gpio: Include the right header

2022-11-11T14:45:37+00:00

The local GPIO driver in the MIPS Alchemy is including the legacy header but what it wants is to implement a GPIO driver so include instead. Cc: Bartosz Golaszewski Cc: linux-gpio@vger.kernel.org Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Linus Walleij Signed-off-by: Thomas Bogendoerfer

MIPS: fix typos in comments

2022-05-04T20:22:59+00:00

Various spelling mistakes in comments. Detected with the help of Coccinelle. Signed-off-by: Julia Lawall Signed-off-by: Thomas Bogendoerfer

mips: alchemy: remove historic comment on gpio build constraints

2021-12-16T14:48:32+00:00

In ./arch/mips/alchemy/common/gpiolib.c, the comment points out certain build constraints on CONFIG_GPIOLIB and CONFIG_ALCHEMY_GPIO_INDIRECT. The commit 832f5dacfa0b ("MIPS: Remove all the uses of custom gpio.h") makes all mips machines use the common gpio.h and removes the config ALCHEMY_GPIO_INDIRECT. So, this makes the comment in alchemy's gpiolib.c historic and obsolete, and can be removed after the commit above. The issue on the reference to a non-existing Kconfig symbol was identified with ./scripts/checkkconfigsymbols.py. This script has been quite useful to identify a number of bugs with Kconfig symbols and deserves to be executed and checked regularly. So, remove the historic comment to reduce the reports made the script and simplify to use this script, as new issues are easier to spot when the list of reports is shorter. Signed-off-by: Lukas Bulwahn Signed-off-by: Thomas Bogendoerfer