On Fri, Aug 23, 2019 at 10:28:24PM +0000, charles.h...@dellteam.com wrote:
> --- /dev/null
> +++ b/lib/acpi_mac_passthru.c
> @@ -0,0 +1,61 @@
> +/*
> + * Copyright (c) 2019 Dell Technology. All rights reserved.
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License
> + * version 2 as published by the Free Software Foundation.
> + *
> + */
You didn't run your patch through checkpatch.pl :(
Anyway, drop the license boilerplate please and use a SPDX line, like
checkpatch asks you to.
> +
> +#include <acpi/acpi_mac_passthru.h>
> +#include <linux/etherdevice.h>
> +
> +int get_acpi_mac_passthru(struct device *dev, struct sockaddr *sa)
> +{
> +#ifdef CONFIG_ACPI
> + acpi_status status;
> + struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
> + union acpi_object *obj;
> + int ret = -EINVAL;
> + unsigned char buf[6];
> +
> + /* returns _AUXMAC_#AABBCCDDEEFF# */
> + status = acpi_evaluate_object(NULL, "\\_SB.AMAC", NULL, &buffer);
> + obj = (union acpi_object *)buffer.pointer;
> + if (!ACPI_SUCCESS(status))
> + return -ENODEV;
> + if (obj->type != ACPI_TYPE_BUFFER || obj->string.length != 0x17) {
> + dev_warn(dev,
> + "Invalid buffer for pass-thru MAC addr: (%d, %d)\n",
> + obj->type, obj->string.length);
> + goto amacout;
> + }
> + if (strncmp(obj->string.pointer, "_AUXMAC_#", 9) != 0 ||
> + strncmp(obj->string.pointer + 0x15, "#", 1) != 0) {
> + dev_warn(dev,
> + "Invalid header when reading pass-thru MAC addr\n");
> + goto amacout;
> + }
> + ret = hex2bin(buf, obj->string.pointer + 9, 6);
> + if (!(ret == 0 && is_valid_ether_addr(buf))) {
> + dev_warn(dev,
> + "Invalid MAC for pass-thru MAC addr: %d, %pM\n",
> + ret, buf);
> + ret = -EINVAL;
> + goto amacout;
> + }
> + memcpy(sa->sa_data, buf, 6);
> + dev_info(dev, "Pass-thru MAC addr %pM\n", sa->sa_data);
> +
> +amacout:
> + kfree(obj);
> + return ret;
> +
> +#else /* !CONFIG_ACPI */
> + (void)dev;
> + (void)sa;
> +
> + return -ENODEV;
No #ifdef in .c files, especially for something as trivial as this. The
#ifdef needs to be in the .h file, and don't build this unless acpi is
enabled. And then, just move this to the acpi core, not in lib/
thanks,
greg k-h
