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author | Takashi Iwai <tiwai@suse.de> | 2020-03-30 14:43:00 +0300 |
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committer | Takashi Iwai <tiwai@suse.de> | 2020-03-30 14:43:00 +0300 |
commit | 3c22baeab40b2f8e75907cfd7aa69147d5343d2c (patch) | |
tree | e8300e52242ae3a9c7bfe6089ee7125324095e27 /lib/bootconfig.c | |
parent | aa21c3d4b941739651e77747d2f7a20a6c1d87bc (diff) | |
parent | 1c521d7e62262793789845989edca57dea24eb7d (diff) | |
download | linux-3c22baeab40b2f8e75907cfd7aa69147d5343d2c.tar.xz |
Merge tag 'asoc-v5.7' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Updates for v5.7
This is a very big update for the core since Morimoto-san has been
rather busy continuing his refactorings to clean up a lot of the cruft
that we have accumilated over the years. We've also gained several new
drivers, including initial (but still not complete) parts of the Intel
SoundWire support.
- Lots of refactorings to modernize the code from Morimoto-san.
- Conversion of SND_SOC_ALL_CODECS to use imply from Geert Uytterhoeven.
- Continued refactoring and fixing of the Intel support.
- Soundwire and more advanced clocking support for Realtek RT5682.
- Support for amlogic GX, Meson 8, Meson 8B and T9015 DAC, Broadcom
DSL/PON, Ingenic JZ4760 and JZ4770, Realtek RL6231, and TI TAS2563 and
TLV320ADCX140.
Diffstat (limited to 'lib/bootconfig.c')
-rw-r--r-- | lib/bootconfig.c | 51 |
1 files changed, 39 insertions, 12 deletions
diff --git a/lib/bootconfig.c b/lib/bootconfig.c index afb2e767e6fe..ec3ce7fd299f 100644 --- a/lib/bootconfig.c +++ b/lib/bootconfig.c @@ -6,12 +6,13 @@ #define pr_fmt(fmt) "bootconfig: " fmt +#include <linux/bootconfig.h> #include <linux/bug.h> #include <linux/ctype.h> #include <linux/errno.h> #include <linux/kernel.h> +#include <linux/memblock.h> #include <linux/printk.h> -#include <linux/bootconfig.h> #include <linux/string.h> /* @@ -23,7 +24,7 @@ * node (for array). */ -static struct xbc_node xbc_nodes[XBC_NODE_MAX] __initdata; +static struct xbc_node *xbc_nodes __initdata; static int xbc_node_num __initdata; static char *xbc_data __initdata; static size_t xbc_data_size __initdata; @@ -532,7 +533,7 @@ struct xbc_node *find_match_node(struct xbc_node *node, char *k) static int __init __xbc_add_key(char *k) { - struct xbc_node *node; + struct xbc_node *node, *child; if (!xbc_valid_keyword(k)) return xbc_parse_error("Invalid keyword", k); @@ -542,8 +543,12 @@ static int __init __xbc_add_key(char *k) if (!last_parent) /* the first level */ node = find_match_node(xbc_nodes, k); - else - node = find_match_node(xbc_node_get_child(last_parent), k); + else { + child = xbc_node_get_child(last_parent); + if (child && xbc_node_is_value(child)) + return xbc_parse_error("Subkey is mixed with value", k); + node = find_match_node(child, k); + } if (node) last_parent = node; @@ -573,10 +578,10 @@ static int __init __xbc_parse_keys(char *k) return __xbc_add_key(k); } -static int __init xbc_parse_kv(char **k, char *v) +static int __init xbc_parse_kv(char **k, char *v, int op) { struct xbc_node *prev_parent = last_parent; - struct xbc_node *node; + struct xbc_node *child; char *next; int c, ret; @@ -584,12 +589,19 @@ static int __init xbc_parse_kv(char **k, char *v) if (ret) return ret; + child = xbc_node_get_child(last_parent); + if (child) { + if (xbc_node_is_key(child)) + return xbc_parse_error("Value is mixed with subkey", v); + else if (op == '=') + return xbc_parse_error("Value is redefined", v); + } + c = __xbc_parse_value(&v, &next); if (c < 0) return c; - node = xbc_add_sibling(v, XBC_VALUE); - if (!node) + if (!xbc_add_sibling(v, XBC_VALUE)) return -ENOMEM; if (c == ',') { /* Array */ @@ -719,7 +731,8 @@ void __init xbc_destroy_all(void) xbc_data = NULL; xbc_data_size = 0; xbc_node_num = 0; - memset(xbc_nodes, 0, sizeof(xbc_nodes)); + memblock_free(__pa(xbc_nodes), sizeof(struct xbc_node) * XBC_NODE_MAX); + xbc_nodes = NULL; } /** @@ -748,13 +761,20 @@ int __init xbc_init(char *buf) return -ERANGE; } + xbc_nodes = memblock_alloc(sizeof(struct xbc_node) * XBC_NODE_MAX, + SMP_CACHE_BYTES); + if (!xbc_nodes) { + pr_err("Failed to allocate memory for bootconfig nodes.\n"); + return -ENOMEM; + } + memset(xbc_nodes, 0, sizeof(struct xbc_node) * XBC_NODE_MAX); xbc_data = buf; xbc_data_size = ret + 1; last_parent = NULL; p = buf; do { - q = strpbrk(p, "{}=;\n#"); + q = strpbrk(p, "{}=+;\n#"); if (!q) { p = skip_spaces(p); if (*p != '\0') @@ -765,8 +785,15 @@ int __init xbc_init(char *buf) c = *q; *q++ = '\0'; switch (c) { + case '+': + if (*q++ != '=') { + ret = xbc_parse_error("Wrong '+' operator", + q - 2); + break; + } + /* Fall through */ case '=': - ret = xbc_parse_kv(&p, q); + ret = xbc_parse_kv(&p, q, c); break; case '{': ret = xbc_open_brace(&p, q); |