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sd: Use ERRP_GUARD()

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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 '/^SD (Secure Card)$/,/^$/{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: <20200707165037.1026246-4-armbru@redhat.com>
[ERRP_AUTO_PROPAGATE() renamed to ERRP_GUARD(), and
auto-propagated-errp.cocci to errp-guard.cocci.  Commit message
tweaked again.]
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2020-07-07 18:50:32 +02:00 committed by Markus Armbruster
parent 8220f3ac74
commit de1b3800b7
3 changed files with 17 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
hw/sd/sdhci-pci.c
View File

@ -29,13 +29,12 @@ static Property sdhci_pci_properties[] = {
static void sdhci_pci_realize(PCIDevice *dev, Error **errp) static void sdhci_pci_realize(PCIDevice *dev, Error **errp)
{ {
ERRP_GUARD();
SDHCIState *s = PCI_SDHCI(dev); SDHCIState *s = PCI_SDHCI(dev);
Error *local_err = NULL;
sdhci_initfn(s); sdhci_initfn(s);
sdhci_common_realize(s, &local_err); sdhci_common_realize(s, errp);
if (local_err) { if (*errp) {
error_propagate(errp, local_err);
return; return;
} }

21
hw/sd/sdhci.c
View File

@ -1288,7 +1288,7 @@ static const MemoryRegionOps sdhci_mmio_ops = {
static void sdhci_init_readonly_registers(SDHCIState *s, Error **errp) static void sdhci_init_readonly_registers(SDHCIState *s, Error **errp)
{ {
Error *local_err = NULL; ERRP_GUARD();
switch (s->sd_spec_version) { switch (s->sd_spec_version) {
case 2 ... 3: case 2 ... 3:
@ -1299,9 +1299,8 @@ static void sdhci_init_readonly_registers(SDHCIState *s, Error **errp)
} }
s->version = (SDHC_HCVER_VENDOR << 8) | (s->sd_spec_version - 1); s->version = (SDHC_HCVER_VENDOR << 8) | (s->sd_spec_version - 1);
sdhci_check_capareg(s, &local_err); sdhci_check_capareg(s, errp);
if (local_err) { if (*errp) {
error_propagate(errp, local_err);
return; return;
} }
} }
@ -1332,11 +1331,10 @@ void sdhci_uninitfn(SDHCIState *s)
void sdhci_common_realize(SDHCIState *s, Error **errp) void sdhci_common_realize(SDHCIState *s, Error **errp)
{ {
Error *local_err = NULL; ERRP_GUARD();
sdhci_init_readonly_registers(s, &local_err); sdhci_init_readonly_registers(s, errp);
if (local_err) { if (*errp) {
error_propagate(errp, local_err);
return; return;
} }
s->buf_maxsz = sdhci_get_fifolen(s); s->buf_maxsz = sdhci_get_fifolen(s);
@ -1456,13 +1454,12 @@ static void sdhci_sysbus_finalize(Object *obj)
static void sdhci_sysbus_realize(DeviceState *dev, Error **errp) static void sdhci_sysbus_realize(DeviceState *dev, Error **errp)
{ {
ERRP_GUARD();
SDHCIState *s = SYSBUS_SDHCI(dev); SDHCIState *s = SYSBUS_SDHCI(dev);
SysBusDevice *sbd = SYS_BUS_DEVICE(dev); SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
Error *local_err = NULL;
sdhci_common_realize(s, &local_err); sdhci_common_realize(s, errp);
if (local_err) { if (*errp) {
error_propagate(errp, local_err);
return; return;
} }

10
hw/sd/ssi-sd.c
View File

@ -241,10 +241,10 @@ static const VMStateDescription vmstate_ssi_sd = {
static void ssi_sd_realize(SSISlave *d, Error **errp) static void ssi_sd_realize(SSISlave *d, Error **errp)
{ {
ERRP_GUARD();
ssi_sd_state *s = SSI_SD(d); ssi_sd_state *s = SSI_SD(d);
DeviceState *carddev; DeviceState *carddev;
DriveInfo *dinfo; DriveInfo *dinfo;
Error *err = NULL;
qbus_create_inplace(&s->sdbus, sizeof(s->sdbus), TYPE_SD_BUS, qbus_create_inplace(&s->sdbus, sizeof(s->sdbus), TYPE_SD_BUS,
DEVICE(d), "sd-bus"); DEVICE(d), "sd-bus");
@ -255,23 +255,23 @@ static void ssi_sd_realize(SSISlave *d, Error **errp)
carddev = qdev_new(TYPE_SD_CARD); carddev = qdev_new(TYPE_SD_CARD);
if (dinfo) { if (dinfo) {
if (!qdev_prop_set_drive_err(carddev, "drive", if (!qdev_prop_set_drive_err(carddev, "drive",
blk_by_legacy_dinfo(dinfo), &err)) { blk_by_legacy_dinfo(dinfo), errp)) {
goto fail; goto fail;
} }
} }
if (!object_property_set_bool(OBJECT(carddev), "spi", true, &err)) { if (!object_property_set_bool(OBJECT(carddev), "spi", true, errp)) {
goto fail; goto fail;
} }
if (!qdev_realize_and_unref(carddev, BUS(&s->sdbus), &err)) { if (!qdev_realize_and_unref(carddev, BUS(&s->sdbus), errp)) {
goto fail; goto fail;
} }
return; return;
fail: fail:
error_propagate_prepend(errp, err, "failed to init SD card: "); error_prepend(errp, "failed to init SD card: ");
} }
static void ssi_sd_reset(DeviceState *dev) static void ssi_sd_reset(DeviceState *dev)