From d576a9561a1c80ae593539fb0ce0743d66825ac2 Mon Sep 17 00:00:00 2001 From: Andi Shyti Date: Sat, 22 Aug 2026 14:19:12 +0200 Subject: Merge tag 'rust-i2c-for-7.3' into i2c/i2c i2c: rust: mark I2cAdapter methods as inline A single cleanup for the Rust I2C abstractions, targeting 7.3. `I2cAdapter::get`, `inc_ref`, and `dec_ref` are trivial wrappers around `i2c_get_adapter`/`i2c_put_adapter` and were showing up as their own symbols in the build. Mark them `#[inline]` so they get folded into their callers instead. Signed-off-by: Igor Korotin * tag 'rust-i2c-for-7.3': i2c: rust: mark I2cAdapter methods as inline --- arch/um/drivers/null.c | 51 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 arch/um/drivers/null.c (limited to 'arch/um/drivers/null.c') diff --git a/arch/um/drivers/null.c b/arch/um/drivers/null.c new file mode 100644 index 000000000..30d59b848 --- /dev/null +++ b/arch/um/drivers/null.c @@ -0,0 +1,51 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{linux.intel,addtoit}.com) + */ + +#include +#include +#include +#include "chan_user.h" +#include + +/* This address is used only as a unique identifier */ +static int null_chan; + +static void *null_init(char *str, int device, const struct chan_opts *opts) +{ + return &null_chan; +} + +static int null_open(int input, int output, int primary, void *d, + char **dev_out) +{ + int fd; + + *dev_out = NULL; + + fd = open(DEV_NULL, O_RDWR); + return (fd < 0) ? -errno : fd; +} + +static int null_read(int fd, __u8 *c_out, void *unused) +{ + return -ENODEV; +} + +static void null_free(void *data) +{ +} + +const struct chan_ops null_ops = { + .type = "null", + .init = null_init, + .open = null_open, + .close = generic_close, + .read = null_read, + .write = generic_write, + .console_write = generic_console_write, + .window_size = generic_window_size, + .free = null_free, + .winch = 0, +}; -- cgit v1.3.1