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Revision 3b25528e1e355c803e73aa326ce657b5606cda73 authored by Chen-Yu Tsai on 29 August 2019, 03:17:24 UTC, committed by David S. Miller on 30 August 2019, 21:16:26 UTC 
net: stmmac: dwmac-rk: Don't fail if phy regulator is absent
 
The devicetree binding lists the phy phy as optional. As such, the
driver should not bail out if it can't find a regulator. Instead it
should just skip the remaining regulator related code and continue
on normally.

Skip the remainder of phy_power_on() if a regulator supply isn't
available. This also gets rid of the bogus return code.

Fixes: 2e12f536635f ("net: stmmac: dwmac-rk: Use standard devicetree property for phy regulator")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent b6b4dc4
Raw File
kheaders.c 
// SPDX-License-Identifier: GPL-2.0
/*
 * Provide kernel headers useful to build tracing programs
 * such as for running eBPF tracing tools.
 *
 * (Borrowed code from kernel/configs.c)
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/kobject.h>
#include <linux/init.h>

/*
 * Define kernel_headers_data and kernel_headers_data_end, within which the
 * compressed kernel headers are stored. The file is first compressed with xz.
 */

asm (
"	.pushsection .rodata, \"a\"		\n"
"	.global kernel_headers_data		\n"
"kernel_headers_data:				\n"
"	.incbin \"kernel/kheaders_data.tar.xz\"	\n"
"	.global kernel_headers_data_end		\n"
"kernel_headers_data_end:			\n"
"	.popsection				\n"
);

extern char kernel_headers_data;
extern char kernel_headers_data_end;

static ssize_t
ikheaders_read(struct file *file,  struct kobject *kobj,
	       struct bin_attribute *bin_attr,
	       char *buf, loff_t off, size_t len)
{
	memcpy(buf, &kernel_headers_data + off, len);
	return len;
}

static struct bin_attribute kheaders_attr __ro_after_init = {
	.attr = {
		.name = "kheaders.tar.xz",
		.mode = 0444,
	},
	.read = &ikheaders_read,
};

static int __init ikheaders_init(void)
{
	kheaders_attr.size = (&kernel_headers_data_end -
			      &kernel_headers_data);
	return sysfs_create_bin_file(kernel_kobj, &kheaders_attr);
}

static void __exit ikheaders_cleanup(void)
{
	sysfs_remove_bin_file(kernel_kobj, &kheaders_attr);
}

module_init(ikheaders_init);
module_exit(ikheaders_cleanup);

MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Joel Fernandes");
MODULE_DESCRIPTION("Echo the kernel header artifacts used to build the kernel");
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