trivial unneeded labels cleanup

[PATCH v1 17/59] block/dmg.c: remove unneeded 'fail' label in dmg_read_mish_block()

Daniel Henrique Barboza posted 59 patches 6 years, 1 month ago

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Maintainers: Aurelien Jarno <aurelien@aurel32.net>, Max Reitz <mreitz@redhat.com>, Gerd Hoffmann <kraxel@redhat.com>, Greg Kurz <groug@kaod.org>, Jason Wang <jasowang@redhat.com>, Corey Minyard <minyard@acm.org>, Aleksandar Markovic <amarkovic@wavecomp.com>, Kevin Wolf <kwolf@redhat.com>, Stefan Hajnoczi <stefanha@redhat.com>, David Hildenbrand <david@redhat.com>, "Dr. David Alan Gilbert" <dgilbert@redhat.com>, David Gibson <david@gibson.dropbear.id.au>, "Daniel P. Berrangé" <berrange@redhat.com>, Laurent Vivier <laurent@vivier.eu>, Wen Congyang <wencongyang2@huawei.com>, "Michael S. Tsirkin" <mst@redhat.com>, Cornelia Huck <cohuck@redhat.com>, "Richard W.M. Jones" <rjones@redhat.com>, Jeff Cody <codyprime@gmail.com>, Riku Voipio <riku.voipio@iki.fi>, Stefan Weil <sw@weilnetz.de>, Michael Roth <mdroth@linux.vnet.ibm.com>, Richard Henderson <rth@twiddle.net>, Eduardo Habkost <ehabkost@redhat.com>, Yuval Shaia <yuval.shaia.ml@gmail.com>, Fam Zheng <fam@euphon.net>, Xie Changlong <xiechanglong.d@gmail.com>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, Halil Pasic <pasic@linux.ibm.com>, Juan Quintela <quintela@redhat.com>, John Snow <jsnow@redhat.com>, Dmitry Fleytman <dmitry.fleytman@gmail.com>, Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>, Christian Borntraeger <borntraeger@de.ibm.com>, Aleksandar Rikalo <aleksandar.rikalo@rt-rk.com>, "Gonglei (Arei)" <arei.gonglei@huawei.com>, Guan Xuetao <gxt@mprc.pku.edu.cn>, Paolo Bonzini <pbonzini@redhat.com>

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[PATCH v1 17/59] block/dmg.c: remove unneeded 'fail' label in dmg_read_mish_block()

Posted by Daniel Henrique Barboza 6 years, 1 month ago

Both the 'fail' label and 'ret' variable can be removed from the
function. Instead, call 'return -EINVAL' in the error conditions.

CC: Stefan Hajnoczi <stefanha@redhat.com>
CC: qemu-block@nongnu.org
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
---
 block/dmg.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/block/dmg.c b/block/dmg.c
index 4a045f2b3e..ce39a87864 100644
--- a/block/dmg.c
+++ b/block/dmg.c
@@ -217,7 +217,6 @@ static int dmg_read_mish_block(BDRVDMGState *s, DmgHeaderState *ds,
                                uint8_t *buffer, uint32_t count)
 {
     uint32_t type, i;
-    int ret;
     size_t new_size;
     uint32_t chunk_count;
     int64_t offset = 0;
@@ -273,8 +272,7 @@ static int dmg_read_mish_block(BDRVDMGState *s, DmgHeaderState *ds,
             error_report("sector count %" PRIu64 " for chunk %" PRIu32
                          " is larger than max (%u)",
                          s->sectorcounts[i], i, DMG_SECTORCOUNTS_MAX);
-            ret = -EINVAL;
-            goto fail;
+            return -EINVAL;
         }
 
         /* offset in (compressed) data fork */
@@ -288,8 +286,7 @@ static int dmg_read_mish_block(BDRVDMGState *s, DmgHeaderState *ds,
             error_report("length %" PRIu64 " for chunk %" PRIu32
                          " is larger than max (%u)",
                          s->lengths[i], i, DMG_LENGTHS_MAX);
-            ret = -EINVAL;
-            goto fail;
+            return -EINVAL;
         }
 
         update_max_chunk_size(s, i, &ds->max_compressed_size,
@@ -298,9 +295,6 @@ static int dmg_read_mish_block(BDRVDMGState *s, DmgHeaderState *ds,
     }
     s->n_chunks += chunk_count;
     return 0;
-
-fail:
-    return ret;
 }
 
 static int dmg_read_resource_fork(BlockDriverState *bs, DmgHeaderState *ds,
-- 
2.24.1

Re: [PATCH v1 17/59] block/dmg.c: remove unneeded 'fail' label in dmg_read_mish_block()

Posted by Stefan Hajnoczi 6 years, 1 month ago

On Mon, Jan 06, 2020 at 03:23:43PM -0300, Daniel Henrique Barboza wrote:
> Both the 'fail' label and 'ret' variable can be removed from the
> function. Instead, call 'return -EINVAL' in the error conditions.
> 
> CC: Stefan Hajnoczi <stefanha@redhat.com>
> CC: qemu-block@nongnu.org
> Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
> ---
>  block/dmg.c | 10 ++--------
>  1 file changed, 2 insertions(+), 8 deletions(-)

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>