cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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workarounds.c (782B)

      1// SPDX-License-Identifier: GPL-2.0
      2#include "bcm47xx_private.h"
      3
      4#include <linux/gpio.h>
      5#include <bcm47xx_board.h>
      6#include <bcm47xx.h>
      7
      8static void __init bcm47xx_workarounds_enable_usb_power(int usb_power)
      9{
     10	int err;
     11
     12	err = gpio_request_one(usb_power, GPIOF_OUT_INIT_HIGH, "usb_power");
     13	if (err)
     14		pr_err("Failed to request USB power gpio: %d\n", err);
     15	else
     16		gpio_free(usb_power);
     17}
     18
     19void __init bcm47xx_workarounds(void)
     20{
     21	enum bcm47xx_board board = bcm47xx_board_get();
     22
     23	switch (board) {
     24	case BCM47XX_BOARD_NETGEAR_WNR3500L:
     25		bcm47xx_workarounds_enable_usb_power(12);
     26		break;
     27	case BCM47XX_BOARD_NETGEAR_WNDR3400V2:
     28	case BCM47XX_BOARD_NETGEAR_WNDR3400_V3:
     29		bcm47xx_workarounds_enable_usb_power(21);
     30		break;
     31	default:
     32		/* No workaround(s) needed */
     33		break;
     34	}
     35}