diff options
| author | Jan Kara <jack@suse.cz> | 2017-03-08 16:56:05 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-03-08 20:55:40 +0300 |
| commit | 672a2c87c83649fb0167202342ce85af9a3b4f1c (patch) | |
| tree | b871c356005788f0738f963e0aacc154c9d88bee | |
| parent | 79bd99596b7305ab08109a8bf44a6a4511dbf1cd (diff) | |
| download | linux-672a2c87c83649fb0167202342ce85af9a3b4f1c.tar.xz | |
axonram: Fix gendisk handling
It is invalid to call del_gendisk() when disk->queue is NULL. Fix error
handling in axon_ram_probe() to avoid doing that.
Also del_gendisk() does not drop a reference to gendisk allocated by
alloc_disk(). That has to be done by put_disk(). Add that call where
needed.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>
| -rw-r--r-- | arch/powerpc/sysdev/axonram.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/powerpc/sysdev/axonram.c b/arch/powerpc/sysdev/axonram.c index ada29eaed6e2..f523ac883150 100644 --- a/arch/powerpc/sysdev/axonram.c +++ b/arch/powerpc/sysdev/axonram.c @@ -274,7 +274,9 @@ failed: if (bank->disk->major > 0) unregister_blkdev(bank->disk->major, bank->disk->disk_name); - del_gendisk(bank->disk); + if (bank->disk->flags & GENHD_FL_UP) + del_gendisk(bank->disk); + put_disk(bank->disk); } device->dev.platform_data = NULL; if (bank->io_addr != 0) @@ -299,6 +301,7 @@ axon_ram_remove(struct platform_device *device) device_remove_file(&device->dev, &dev_attr_ecc); free_irq(bank->irq_id, device); del_gendisk(bank->disk); + put_disk(bank->disk); iounmap((void __iomem *) bank->io_addr); kfree(bank); |