From 3cf5d4f84fbd58b1dab843b8d428a828c376f3a5 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Thu, 11 Jul 2013 12:41:44 +0100 Subject: [PATCH] regmap: Allow multiple patches to be registered It may be useful to register multiple patches with regmap, for example one that depends on the device revision and one that depends on the system configuration. Add support for doing this, appending any new patches to the existing patches. Signed-off-by: Mark Brown --- drivers/base/regmap/regmap.c | 17 ++++++++--------- 1 file changed, 8 insertions(+), 9 deletions(-) diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 95920583e31e6..55d9118d2d6fc 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -1888,13 +1888,10 @@ EXPORT_SYMBOL_GPL(regmap_async_complete); int regmap_register_patch(struct regmap *map, const struct reg_default *regs, int num_regs) { + struct reg_default *p; int i, ret; bool bypass; - /* If needed the implementation can be extended to support this */ - if (map->patch) - return -EBUSY; - map->lock(map->lock_arg); bypass = map->cache_bypass; @@ -1911,11 +1908,13 @@ int regmap_register_patch(struct regmap *map, const struct reg_default *regs, } } - map->patch = kcalloc(num_regs, sizeof(struct reg_default), GFP_KERNEL); - if (map->patch != NULL) { - memcpy(map->patch, regs, - num_regs * sizeof(struct reg_default)); - map->patch_regs = num_regs; + p = krealloc(map->patch, + sizeof(struct reg_default) * (map->patch_regs + num_regs), + GFP_KERNEL); + if (p) { + memcpy(p + map->patch_regs, regs, num_regs * sizeof(*regs)); + map->patch = p; + map->patch_regs += num_regs; } else { ret = -ENOMEM; } -- 2.39.5