[PATCH v2 06/15] xtensa/platforms/iss/simdisk: add error handling support for add_disk()

Luis Chamberlain
2021-09-27T22:02:44Z

We never checked for errors on add_disk() as this function
returned void. Now that this is fixed, use the shiny new
error handling.

Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
---
arch/xtensa/platforms/iss/simdisk.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/arch/xtensa/platforms/iss/simdisk.c b/arch/xtensa/platforms/iss/simdisk.c
index 3cdfa00738e0..ad85c554cd45 100644
--- a/arch/xtensa/platforms/iss/simdisk.c
+++ b/arch/xtensa/platforms/iss/simdisk.c
@@ -259,6 +259,7 @@ static int __init simdisk_setup(struct simdisk *dev, int which,
struct proc_dir_entry *procdir)
{
char tmp[2] = { '0' + which, 0 };
+ int err = -ENOMEM;

dev->fd = -1;
dev->filename = NULL;
@@ -267,7 +268,7 @@ static int __init simdisk_setup(struct simdisk *dev, int which,

dev->gd = blk_alloc_disk(NUMA_NO_NODE);
if (!dev->gd)
- return -ENOMEM;
+ goto out;
dev->gd->major = simdisk_major;
dev->gd->first_minor = which;
dev->gd->minors = SIMDISK_MINORS;
@@ -275,10 +276,18 @@ static int __init simdisk_setup(struct simdisk *dev, int which,
dev->gd->private_data = dev;
snprintf(dev->gd->disk_name, 32, "simdisk%d", which);
set_capacity(dev->gd, 0);
- add_disk(dev->gd);
+ err = add_disk(dev->gd);
+ if (err)
+ goto out_cleanup_disk;

dev->procfile = proc_create_data(tmp, 0644, procdir, &simdisk_proc_ops, dev);
+
return 0;
+
+out_cleanup_disk:
+ blk_cleanup_disk(dev->gd);
+out:
+ return err;
}

static int __init simdisk_init(void)
--
2.30.2