#include "debug.h" #include "util.h" #include int prefixcmp(const char *str, const char *prefix) { for (; ; str++, prefix++) if (!*prefix) return 0; else if (*str != *prefix) return (unsigned char)*prefix - (unsigned char)*str; } /* * Used as the default ->buf value, so that people can always assume * buf is non NULL and ->buf is NUL terminated even for a freshly * initialized strbuf. */ char strbuf_slopbuf[1]; int strbuf_init(struct strbuf *sb, ssize_t hint) { sb->alloc = sb->len = 0; sb->buf = strbuf_slopbuf; if (hint) return strbuf_grow(sb, hint); return 0; } void strbuf_release(struct strbuf *sb) { if (sb->alloc) { zfree(&sb->buf); strbuf_init(sb, 0); } } char *strbuf_detach(struct strbuf *sb, size_t *sz) { char *res = sb->alloc ? sb->buf : NULL; if (sz) *sz = sb->len; strbuf_init(sb, 0); return res; } int strbuf_grow(struct strbuf *sb, size_t extra) { char *buf; size_t nr = sb->len + extra + 1; if (nr < sb->alloc) return 0; if (nr <= sb->len) return -E2BIG; if (alloc_nr(sb->alloc) > nr) nr = alloc_nr(sb->alloc); /* * Note that sb->buf == strbuf_slopbuf if sb->alloc == 0, and it is * a static variable. Thus we have to avoid passing it to realloc. */ buf = realloc(sb->alloc ? sb->buf : NULL, nr * sizeof(*buf)); if (!buf) return -ENOMEM; sb->buf = buf; sb->alloc = nr; return 0; } int strbuf_addch(struct strbuf *sb, int c) { int ret = strbuf_grow(sb, 1); if (ret) return ret; sb->buf[sb->len++] = c; sb->buf[sb->len] = '\0'; return 0; } int strbuf_add(struct strbuf *sb, const void *data, size_t len) { int ret = strbuf_grow(sb, len); if (ret) return ret; memcpy(sb->buf + sb->len, data, len); return strbuf_setlen(sb, sb->len + len); } static int strbuf_addv(struct strbuf *sb, const char *fmt, va_list ap) { int len, ret; va_list ap_saved; if (!strbuf_avail(sb)) { ret = strbuf_grow(sb, 64); if (ret) return ret; } va_copy(ap_saved, ap); len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap); if (len < 0) return len; if (len > strbuf_avail(sb)) { ret = strbuf_grow(sb, len); if (ret) return ret; len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap_saved); va_end(ap_saved); if (len > strbuf_avail(sb)) { pr_debug("this should not happen, your vsnprintf is broken"); return -EINVAL; } } return strbuf_setlen(sb, sb->len + len); } int strbuf_addf(struct strbuf *sb, const char *fmt, ...) { va_list ap; int ret; va_start(ap, fmt); ret = strbuf_addv(sb, fmt, ap); va_end(ap); return ret; } ssize_t strbuf_read(struct strbuf *sb, int fd, ssize_t hint) { size_t oldlen = sb->len; size_t oldalloc = sb->alloc; int ret; ret = strbuf_grow(sb, hint ? hint : 8192); if (ret) return ret; for (;;) { ssize_t cnt; cnt = read(fd, sb->buf + sb->len, sb->alloc - sb->len - 1); if (cnt < 0) { if (oldalloc == 0) strbuf_release(sb); else strbuf_setlen(sb, oldlen); return cnt; } if (!cnt) break; sb->len += cnt; ret = strbuf_grow(sb, 8192); if (ret) return ret; } sb->buf[sb->len] = '\0'; return sb->len - oldlen; } 38a47d8fbbc49c33aae1e7a682'>ax25

diff options

author	Nicolae Rosia <Nicolae_Rosia@mentor.com>	2016-11-12 14:42:14 +0200
committer	Mark Brown <broonie@kernel.org>	2016-11-16 18:03:39 +0000
commit	dab780a3b489b038a47d8fbbc49c33aae1e7a682 (patch)
tree	c9599a6970c187f95f7875d2a3e948f05cef1e45 /net/ax25
parent	1001354ca34179f3db924eb66672442a173147dc (diff)

regulator: twl-regulator: rework fixed regulator definition

TWL603X and TWL4030 are different and have different code logic. Rework the regulator definition method so we can split the file easily in twl4030 and twl6030. Signed-off-by: Nicolae Rosia <Nicolae_Rosia@mentor.com> Signed-off-by: Mark Brown <broonie@kernel.org>

Diffstat (limited to 'net/ax25')


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