/* * Intel MIC Platform Software Stack (MPSS) * * Copyright(c) 2013 Intel Corporation. * * 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. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * The full GNU General Public License is included in this distribution in * the file called "COPYING". * * Intel MIC User Space Tools. */ #include "mpssd.h" #define PAGE_SIZE 4096 char * readsysfs(char *dir, char *entry) { char filename[PATH_MAX]; char value[PAGE_SIZE]; char *string = NULL; int fd; int len; if (dir == NULL) snprintf(filename, PATH_MAX, "%s/%s", MICSYSFSDIR, entry); else snprintf(filename, PATH_MAX, "%s/%s/%s", MICSYSFSDIR, dir, entry); fd = open(filename, O_RDONLY); if (fd < 0) { mpsslog("Failed to open sysfs entry '%s': %s\n", filename, strerror(errno)); return NULL; } len = read(fd, value, sizeof(value)); if (len < 0) { mpsslog("Failed to read sysfs entry '%s': %s\n", filename, strerror(errno)); goto readsys_ret; } if (len == 0) goto readsys_ret; value[len - 1] = '\0'; string = malloc(strlen(value) + 1); if (string) strcpy(string, value); readsys_ret: close(fd); return string; } int setsysfs(char *dir, char *entry, char *value) { char filename[PATH_MAX]; char *oldvalue; int fd, ret = 0; if (dir == NULL) snprintf(filename, PATH_MAX, "%s/%s", MICSYSFSDIR, entry); else snprintf(filename, PATH_MAX, "%s/%s/%s", MICSYSFSDIR, dir, entry); oldvalue = readsysfs(dir, entry); fd = open(filename, O_RDWR); if (fd < 0) { ret = errno; mpsslog("Failed to open sysfs entry '%s': %s\n", filename, strerror(errno)); goto done; } if (!oldvalue || strcmp(value, oldvalue)) { if (write(fd, value, strlen(value)) < 0) { ret = errno; mpsslog("Failed to write new sysfs entry '%s': %s\n", filename, strerror(errno)); } } close(fd); done: if (oldvalue) free(oldvalue); return ret; } e4344c606e81e10'/>
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authorJisheng Zhang <jszhang@marvell.com>2017-01-23 15:15:32 +0800
committerLinus Walleij <linus.walleij@linaro.org>2017-01-30 09:15:10 +0100
commite82d02580af45663fad6d3596e4344c606e81e10 (patch)
tree5a19fff63af270f77ab5ae79fdf2c806e4e4ebb2 /net/key
parent566cf877a1fcb6d6dc0126b076aad062054c2637 (diff)
pinctrl: berlin-bg4ct: fix the value for "sd1a" of pin SCRD0_CRD_PRES
This should be a typo. Signed-off-by: Jisheng Zhang <jszhang@marvell.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'net/key')