lkml.org 
[lkml]   [2015]   [Aug]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 1/2] cxl: Fix + cleanup error paths in cxl_dev_context_init
Date
From: Ian Munsie <imunsie@au1.ibm.com>

If the cxl_context_alloc() call fails, we return immediately without
releasing the reference on the AFU device, allowing it to leak.

This patch switches to using goto style error handling so that the
device is released in common code for both error paths, and will also
simplify things if we add additional initialisation in this function in
the future.

Signed-off-by: Ian Munsie <imunsie@au1.ibm.com>
---
drivers/misc/cxl/api.c | 19 ++++++++++++-------
1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/drivers/misc/cxl/api.c b/drivers/misc/cxl/api.c
index f49e3e5..005adc7 100644
--- a/drivers/misc/cxl/api.c
+++ b/drivers/misc/cxl/api.c
@@ -25,19 +25,24 @@ struct cxl_context *cxl_dev_context_init(struct pci_dev *dev)

get_device(&afu->dev);
ctx = cxl_context_alloc();
- if (IS_ERR(ctx))
- return ctx;
+ if (IS_ERR(ctx)) {
+ rc = PTR_ERR(ctx);
+ goto err_dev;
+ }

/* Make it a slave context. We can promote it later? */
rc = cxl_context_init(ctx, afu, false, NULL);
- if (rc) {
- kfree(ctx);
- put_device(&afu->dev);
- return ERR_PTR(-ENOMEM);
- }
+ if (rc)
+ goto err_ctx;
cxl_assign_psn_space(ctx);

return ctx;
+
+err_ctx:
+ kfree(ctx);
+err_dev:
+ put_device(&afu->dev);
+ return ERR_PTR(rc);
}
EXPORT_SYMBOL_GPL(cxl_dev_context_init);

--
2.1.4


\
 
 \ /
  Last update: 2015-08-27 12:21    [W:0.040 / U:1.068 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site