Messages in this thread Patch in this message | | | From | "Ian Munsie" <> | Subject | [PATCH 1/2] cxl: Fix + cleanup error paths in cxl_dev_context_init | Date | Thu, 27 Aug 2015 19:50:18 +1000 |
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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
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