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[PULL 49/53] pflash: Use ERRP_GUARD()
From: |
Markus Armbruster |
Subject: |
[PULL 49/53] pflash: Use ERRP_GUARD() |
Date: |
Tue, 7 Jul 2020 23:24:59 +0200 |
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
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 '/^Parallel NOR Flash devices$/,/^$/{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: <20200707165037.1026246-5-armbru@redhat.com>
[ERRP_AUTO_PROPAGATE() renamed to ERRP_GUARD(), and
auto-propagated-errp.cocci to errp-guard.cocci. Commit message
tweaked again.]
---
hw/block/pflash_cfi01.c | 7 +++----
hw/block/pflash_cfi02.c | 7 +++----
2 files changed, 6 insertions(+), 8 deletions(-)
diff --git a/hw/block/pflash_cfi01.c b/hw/block/pflash_cfi01.c
index cddc3a5a0c..8ab1d66310 100644
--- a/hw/block/pflash_cfi01.c
+++ b/hw/block/pflash_cfi01.c
@@ -696,12 +696,12 @@ static const MemoryRegionOps pflash_cfi01_ops = {
static void pflash_cfi01_realize(DeviceState *dev, Error **errp)
{
+ ERRP_GUARD();
PFlashCFI01 *pfl = PFLASH_CFI01(dev);
uint64_t total_len;
int ret;
uint64_t blocks_per_device, sector_len_per_device, device_len;
int num_devices;
- Error *local_err = NULL;
if (pfl->sector_len == 0) {
error_setg(errp, "attribute \"sector-length\" not specified or zero.");
@@ -735,9 +735,8 @@ static void pflash_cfi01_realize(DeviceState *dev, Error
**errp)
&pfl->mem, OBJECT(dev),
&pflash_cfi01_ops,
pfl,
- pfl->name, total_len, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
+ pfl->name, total_len, errp);
+ if (*errp) {
return;
}
diff --git a/hw/block/pflash_cfi02.c b/hw/block/pflash_cfi02.c
index b40ce2335a..eb02fccfa5 100644
--- a/hw/block/pflash_cfi02.c
+++ b/hw/block/pflash_cfi02.c
@@ -724,9 +724,9 @@ static const MemoryRegionOps pflash_cfi02_ops = {
static void pflash_cfi02_realize(DeviceState *dev, Error **errp)
{
+ ERRP_GUARD();
PFlashCFI02 *pfl = PFLASH_CFI02(dev);
int ret;
- Error *local_err = NULL;
if (pfl->uniform_sector_len == 0 && pfl->sector_len[0] == 0) {
error_setg(errp, "attribute \"sector-length\" not specified or zero.");
@@ -792,9 +792,8 @@ static void pflash_cfi02_realize(DeviceState *dev, Error
**errp)
memory_region_init_rom_device(&pfl->orig_mem, OBJECT(pfl),
&pflash_cfi02_ops, pfl, pfl->name,
- pfl->chip_len, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
+ pfl->chip_len, errp);
+ if (*errp) {
return;
}
--
2.26.2
- [PULL 25/53] qom: Use return values to check for error where that's simpler, (continued)
- [PULL 25/53] qom: Use return values to check for error where that's simpler, Markus Armbruster, 2020/07/08
- [PULL 35/53] error: Eliminate error_propagate() with Coccinelle, part 2, Markus Armbruster, 2020/07/08
- [PULL 19/53] qapi: Use returned bool to check for failure, manual part, Markus Armbruster, 2020/07/08
- [PULL 05/53] macio: Tidy up error handling in macio_newworld_realize(), Markus Armbruster, 2020/07/08
- [PULL 28/53] qom: Use returned bool to check for failure, Coccinelle part, Markus Armbruster, 2020/07/08
- [PULL 22/53] qom: Rename qdev_get_type() to object_get_type(), Markus Armbruster, 2020/07/08
- [PULL 41/53] qapi: Purge error_propagate() from QAPI core, Markus Armbruster, 2020/07/08
- [PULL 24/53] qom: Don't handle impossible object_property_get_link() failure, Markus Armbruster, 2020/07/08
- [PULL 45/53] hmp: Ignore Error objects where the return value suffices, Markus Armbruster, 2020/07/08
- [PULL 16/53] hmp: Eliminate a variable in hmp_migrate_set_parameter(), Markus Armbruster, 2020/07/08
- [PULL 49/53] pflash: Use ERRP_GUARD(),
Markus Armbruster <=
- [PULL 30/53] qom: Make functions taking Error ** return bool, not 0/-1, Markus Armbruster, 2020/07/08
- [PULL 46/53] error: New macro ERRP_GUARD(), Markus Armbruster, 2020/07/08
- [PULL 42/53] error: Avoid error_propagate() after migrate_add_blocker(), Markus Armbruster, 2020/07/08
- [PULL 47/53] scripts: Coccinelle script to use ERRP_GUARD(), Markus Armbruster, 2020/07/08
- [PULL 51/53] virtio-9p: Use ERRP_GUARD(), Markus Armbruster, 2020/07/08
- [PULL 13/53] qemu-option: Make functions taking Error ** return bool, not void, Markus Armbruster, 2020/07/08
- [PULL 11/53] qemu-option: Factor out helper opt_create(), Markus Armbruster, 2020/07/08
- [PULL 34/53] error: Eliminate error_propagate() with Coccinelle, part 1, Markus Armbruster, 2020/07/08
- [PULL 36/53] error: Eliminate error_propagate() manually, Markus Armbruster, 2020/07/08
- [PULL 33/53] error: Avoid unnecessary error_propagate() after error_setg(), Markus Armbruster, 2020/07/08