diff options
| author |   Dan Carpenter <dan.carpenter@oracle.com> | 2020-02-05 15:32:48 +0300 |
|---|---|---|
| committer |   Vinod Koul <vkoul@kernel.org> | 2020-02-13 20:37:23 +0530 |
| commit | 2227ab4216cd4d56619733bcfaee7e6943cdc9aa (patch) | |
| tree | 2959547d3aca5e11664e9112bf3d24a74577a0da /drivers/dma/idxd | |
| parent | dmaengine: doc: fix warnings/issues of client.rst (diff) | |
| download | linux-dev-2227ab4216cd4d56619733bcfaee7e6943cdc9aa.tar.xz linux-dev-2227ab4216cd4d56619733bcfaee7e6943cdc9aa.zip | |
dmaengine: idxd: Fix error handling in idxd_wq_cdev_dev_setup()
We can't call kfree(dev) after calling device_register(dev). The "dev"
pointer has to be freed using put_device().
Fixes: 42d279f9137a ("dmaengine: idxd: add char driver to expose submission portal to userland")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/20200205123248.hmtog7qa2eiqaagh@kili.mountain
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/idxd')
| -rw-r--r-- | drivers/dma/idxd/cdev.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/dma/idxd/cdev.c b/drivers/dma/idxd/cdev.c index 1d7347825b95..df47be612ebb 100644 --- a/drivers/dma/idxd/cdev.c +++ b/drivers/dma/idxd/cdev.c @@ -204,6 +204,7 @@ static int idxd_wq_cdev_dev_setup(struct idxd_wq *wq) minor = ida_simple_get(&cdev_ctx->minor_ida, 0, MINORMASK, GFP_KERNEL); if (minor < 0) { rc = minor; + kfree(dev); goto ida_err; } @@ -212,7 +213,6 @@ static int idxd_wq_cdev_dev_setup(struct idxd_wq *wq) rc = device_register(dev); if (rc < 0) { dev_err(&idxd->pdev->dev, "device register failed\n"); - put_device(dev); goto dev_reg_err; } idxd_cdev->minor = minor; @@ -221,8 +221,8 @@ static int idxd_wq_cdev_dev_setup(struct idxd_wq *wq) dev_reg_err: ida_simple_remove(&cdev_ctx->minor_ida, MINOR(dev->devt)); + put_device(dev); ida_err: - kfree(dev); idxd_cdev->dev = NULL; return rc; } |