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| author | Johan Hovold <johan@kernel.org> | 2017-06-09 10:59:07 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-06-09 12:08:27 +0200 |
| commit | 3360acdf839170b612f5b212539694c20e3f16d0 (patch) | |
| tree | fc5713663c21c79d9bb2067642055fc071acaa89 /drivers/nvmem | |
| parent | e827756d64773515fa7de5e7e942a6d1494bf64e (diff) | |
| download | linux-exynos-3360acdf839170b612f5b212539694c20e3f16d0.tar.gz linux-exynos-3360acdf839170b612f5b212539694c20e3f16d0.tar.bz2 linux-exynos-3360acdf839170b612f5b212539694c20e3f16d0.zip | |
nvmem: core: fix leaks on registration errors
Make sure to deregister and release the nvmem device and underlying
memory on registration errors.
Note that the private data must be freed using put_device() once the
struct device has been initialised.
Also note that there's a related reference leak in the deregistration
function as reported by Mika Westerberg which is being fixed separately.
Fixes: b6c217ab9be6 ("nvmem: Add backwards compatibility support for older EEPROM drivers.")
Fixes: eace75cfdcf7 ("nvmem: Add a simple NVMEM framework for nvmem providers")
Cc: stable <stable@vger.kernel.org> # 4.3
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/nvmem')
| -rw-r--r-- | drivers/nvmem/core.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c index 8c830a80a648..6cf916d9db6d 100644 --- a/drivers/nvmem/core.c +++ b/drivers/nvmem/core.c @@ -489,21 +489,24 @@ struct nvmem_device *nvmem_register(const struct nvmem_config *config) rval = device_add(&nvmem->dev); if (rval) - goto out; + goto err_put_device; if (config->compat) { rval = nvmem_setup_compat(nvmem, config); if (rval) - goto out; + goto err_device_del; } if (config->cells) nvmem_add_cells(nvmem, config); return nvmem; -out: - ida_simple_remove(&nvmem_ida, nvmem->id); - kfree(nvmem); + +err_device_del: + device_del(&nvmem->dev); +err_put_device: + put_device(&nvmem->dev); + return ERR_PTR(rval); } EXPORT_SYMBOL_GPL(nvmem_register); |