Revision b7270c69a36efc61ed6ebd31a8a458f354a6edc0 authored by Linus Torvalds on 15 October 2022, 01:36:42 UTC, committed by Linus Torvalds on 15 October 2022, 01:36:42 UTC
Pull RTC updates from Alexandre Belloni: "A great rework of the isl12022 driver makes up the bulk of the changes. There is also an important fix for CMOS and then the usual small fixes: - switch to devm_clk_get_enabled() where relevant - cmos: event handler registration fix - isl12022: code improvements" * tag 'rtc-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: rtc: rv3028: Fix codestyle errors rtc: cmos: Fix event handler registration ordering issue rtc: k3: Use devm_clk_get_enabled() helper rtc: jz4740: Use devm_clk_get_enabled() helper rtc: mpfs: Use devm_clk_get_enabled() helper rtc: ds1685: Fix spelling of function name in comment block rtc: isl12022: switch to using regmap API rtc: isl12022: drop redundant write to HR register rtc: isl12022: use dev_set_drvdata() instead of i2c_set_clientdata() rtc: isl12022: use %ptR rtc: isl12022: simplify some expressions rtc: isl12022: drop a dev_info() rtc: isl12022: specify range_min and range_max rtc: isl12022: stop using deprecated devm_rtc_device_register() rtc: stmp3xxx: Add failure handling for stmp3xxx_wdt_register() rtc: mxc: Use devm_clk_get_enabled() helper rtc: gamecube: Always reset HW_SRNPROT after read rtc: k3: detect SoC to determine erratum fix rtc: k3: wait until the unlock field is not zero rtc: mpfs: Remove printing of stray CR
epoll.c
// SPDX-License-Identifier: GPL-2.0
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/file.h>
#include <linux/fs.h>
#include <linux/uaccess.h>
#include <linux/io_uring.h>
#include <linux/eventpoll.h>
#include <uapi/linux/io_uring.h>
#include "io_uring.h"
#include "epoll.h"
#if defined(CONFIG_EPOLL)
struct io_epoll {
struct file *file;
int epfd;
int op;
int fd;
struct epoll_event event;
};
int io_epoll_ctl_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
{
struct io_epoll *epoll = io_kiocb_to_cmd(req, struct io_epoll);
pr_warn_once("%s: epoll_ctl support in io_uring is deprecated and will "
"be removed in a future Linux kernel version.\n",
current->comm);
if (sqe->buf_index || sqe->splice_fd_in)
return -EINVAL;
epoll->epfd = READ_ONCE(sqe->fd);
epoll->op = READ_ONCE(sqe->len);
epoll->fd = READ_ONCE(sqe->off);
if (ep_op_has_event(epoll->op)) {
struct epoll_event __user *ev;
ev = u64_to_user_ptr(READ_ONCE(sqe->addr));
if (copy_from_user(&epoll->event, ev, sizeof(*ev)))
return -EFAULT;
}
return 0;
}
int io_epoll_ctl(struct io_kiocb *req, unsigned int issue_flags)
{
struct io_epoll *ie = io_kiocb_to_cmd(req, struct io_epoll);
int ret;
bool force_nonblock = issue_flags & IO_URING_F_NONBLOCK;
ret = do_epoll_ctl(ie->epfd, ie->op, ie->fd, &ie->event, force_nonblock);
if (force_nonblock && ret == -EAGAIN)
return -EAGAIN;
if (ret < 0)
req_set_fail(req);
io_req_set_res(req, ret, 0);
return IOU_OK;
}
#endif
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