From a28332268849ae13c0fba6d0fd3e6b18b380e214 Mon Sep 17 00:00:00 2001 From: Christian Eggers Date: Thu, 23 Jan 2020 13:20:44 +0100 Subject: globalvar: Allow NULL pointers to be returned by dev_add_param() The following commit will change the return value of dev_add_param() from -ENOSYS to NULL if CONFIG_PARAMETER is disabled. After that, building without CONFIG_PARAMETER will return a NULL pointer to __nvvar_add() instead of an error. Signed-off-by: Christian Eggers Signed-off-by: Sascha Hauer --- common/globalvar.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) diff --git a/common/globalvar.c b/common/globalvar.c index a826e1bc12..c87f2c9339 100644 --- a/common/globalvar.c +++ b/common/globalvar.c @@ -175,21 +175,24 @@ static int nvvar_device_dispatch(const char *name, struct device_d **dev, return 1; } -static int nv_set(struct device_d *dev, struct param_d *p, const char *val) +static int nv_set(struct device_d *dev, struct param_d *p, const char *name, const char *val) { int ret; if (!val) { - free(p->value); + if (p) + free(p->value); return 0; } - ret = dev_set_param(&global_device, p->name, val); + ret = dev_set_param(&global_device, name, val); if (ret) return ret; - free(p->value); - p->value = xstrdup(val); + if (p) { + free(p->value); + p->value = xstrdup(val); + } return 0; } @@ -203,7 +206,7 @@ static int nv_param_set(struct device_d *dev, struct param_d *p, const char *val { int ret; - ret = nv_set(dev, p, val); + ret = nv_set(dev, p, p->name, val); if (ret) return ret; @@ -234,7 +237,7 @@ static int __nvvar_add(const char *name, const char *value) return ret; if (value) - return nv_set(&nv_device, p, value); + return nv_set(&nv_device, p, name, value); ret = nvvar_device_dispatch(name, &dev, &pname); if (ret > 0) @@ -242,7 +245,7 @@ static int __nvvar_add(const char *name, const char *value) else value = dev_get_param(&global_device, name); - if (value) { + if (value && p) { free(p->value); p->value = xstrdup(value); } -- cgit v1.2.3