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authorVladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>2020-07-07 18:50:34 +0200
committerMarkus Armbruster <armbru@redhat.com>2020-07-10 15:18:09 +0200
commit8b4b52759a7c472ee3427d6c82f60091b6f69196 (patch)
tree81e2d72a09c9d4b362329af2c27d9e72abcca967 /hw/nvram/fw_cfg.c
parent76612456aad55c7a2a57aa533a6f935aedb55475 (diff)
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fw_cfg: Use ERRP_GUARD()
If we want to check error after errp-function call, we need to introduce local_err and then propagate it to errp. Instead, use the ERRP_GUARD() macro, benefits are: 1. No need of explicit error_propagate call 2. No need of explicit local_err variable: use errp directly 3. ERRP_GUARD() leaves errp as is if it's not NULL or &error_fatal, this means that we don't break error_abort (we'll abort on error_set, not on error_propagate) If we want to add some info to errp (by error_prepend() or error_append_hint()), we must use the ERRP_GUARD() macro. Otherwise, this info will not be added when errp == &error_fatal (the program will exit prior to the error_append_hint() or error_prepend() call). No such cases are being fixed here. This commit is generated by command sed -n '/^Firmware configuration (fw_cfg)$/,/^$/{s/^F: //p}' \ MAINTAINERS | \ xargs git ls-files | grep '\.[hc]$' | \ xargs spatch \ --sp-file scripts/coccinelle/errp-guard.cocci \ --macro-file scripts/cocci-macro-file.h \ --in-place --no-show-diff --max-width 80 Reported-by: Kevin Wolf <kwolf@redhat.com> Reported-by: Greg Kurz <groug@kaod.org> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> [Commit message tweaked] Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20200707165037.1026246-6-armbru@redhat.com> [ERRP_AUTO_PROPAGATE() renamed to ERRP_GUARD(), and auto-propagated-errp.cocci to errp-guard.cocci. Commit message tweaked again. Coccinelle script rerun for commit 3203148917 "hw/nvram/fw_cfg: Add the FW_CFG_DATA_GENERATOR interface"]
Diffstat (limited to 'hw/nvram/fw_cfg.c')
-rw-r--r--hw/nvram/fw_cfg.c21
1 files changed, 9 insertions, 12 deletions
diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c
index 694722b..3b1811d 100644
--- a/hw/nvram/fw_cfg.c
+++ b/hw/nvram/fw_cfg.c
@@ -1035,8 +1035,8 @@ void *fw_cfg_modify_file(FWCfgState *s, const char *filename,
void fw_cfg_add_from_generator(FWCfgState *s, const char *filename,
const char *gen_id, Error **errp)
{
+ ERRP_GUARD();
FWCfgDataGeneratorClass *klass;
- Error *local_err = NULL;
GByteArray *array;
Object *obj;
gsize size;
@@ -1052,9 +1052,8 @@ void fw_cfg_add_from_generator(FWCfgState *s, const char *filename,
return;
}
klass = FW_CFG_DATA_GENERATOR_GET_CLASS(obj);
- array = klass->get_data(obj, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
+ array = klass->get_data(obj, errp);
+ if (*errp) {
return;
}
size = array->len;
@@ -1260,12 +1259,11 @@ static Property fw_cfg_io_properties[] = {
static void fw_cfg_io_realize(DeviceState *dev, Error **errp)
{
+ ERRP_GUARD();
FWCfgIoState *s = FW_CFG_IO(dev);
- Error *local_err = NULL;
- fw_cfg_file_slots_allocate(FW_CFG(s), &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
+ fw_cfg_file_slots_allocate(FW_CFG(s), errp);
+ if (*errp) {
return;
}
@@ -1311,14 +1309,13 @@ static Property fw_cfg_mem_properties[] = {
static void fw_cfg_mem_realize(DeviceState *dev, Error **errp)
{
+ ERRP_GUARD();
FWCfgMemState *s = FW_CFG_MEM(dev);
SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
const MemoryRegionOps *data_ops = &fw_cfg_data_mem_ops;
- Error *local_err = NULL;
- fw_cfg_file_slots_allocate(FW_CFG(s), &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
+ fw_cfg_file_slots_allocate(FW_CFG(s), errp);
+ if (*errp) {
return;
}