From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
To: gregkh@linuxfoundation.org
Cc: linux-kernel@vger.kernel.org,
Bartosz Golaszewski <bgolaszewski@baylibre.com>,
Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Subject: [PATCH 06/14] nvmem: fix memory leak in error path
Date: Tue, 10 Mar 2020 13:22:49 +0000 [thread overview]
Message-ID: <20200310132257.23358-7-srinivas.kandagatla@linaro.org> (raw)
In-Reply-To: <20200310132257.23358-1-srinivas.kandagatla@linaro.org>
From: Bartosz Golaszewski <bgolaszewski@baylibre.com>
We need to free the ida mapping and nvmem struct if the write-protect
GPIO lookup fails.
Fixes: 2a127da461a9 ("nvmem: add support for the write-protect pin")
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
drivers/nvmem/core.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index 503da67dde06..2758d90d63b7 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -353,8 +353,12 @@ struct nvmem_device *nvmem_register(const struct nvmem_config *config)
else
nvmem->wp_gpio = gpiod_get_optional(config->dev, "wp",
GPIOD_OUT_HIGH);
- if (IS_ERR(nvmem->wp_gpio))
- return ERR_CAST(nvmem->wp_gpio);
+ if (IS_ERR(nvmem->wp_gpio)) {
+ ida_simple_remove(&nvmem_ida, nvmem->id);
+ rval = PTR_ERR(nvmem->wp_gpio);
+ kfree(nvmem);
+ return ERR_PTR(rval);
+ }
kref_init(&nvmem->refcnt);
INIT_LIST_HEAD(&nvmem->cells);
--
2.21.0
next prev parent reply other threads:[~2020-03-10 13:23 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-10 13:22 [PATCH 00/14] nvmem: patches for 5.7 Srinivas Kandagatla
2020-03-10 13:22 ` [PATCH 01/14] nvmem: imx: ocotp: add i.MX8MP support Srinivas Kandagatla
2020-03-10 13:22 ` [PATCH 02/14] nvmem: core: add nvmem_cell_read_common Srinivas Kandagatla
2020-03-10 13:22 ` [PATCH 03/14] nvmem: core: add nvmem_cell_read_u64 Srinivas Kandagatla
2020-03-10 13:22 ` [PATCH 04/14] nvmem: remove a stray newline in nvmem_register() Srinivas Kandagatla
2020-03-10 13:22 ` [PATCH 05/14] nvmem: add a newline for readability Srinivas Kandagatla
2020-03-10 13:22 ` Srinivas Kandagatla [this message]
2020-03-10 13:22 ` [PATCH 07/14] nvmem: release the write-protect pin Srinivas Kandagatla
2020-03-10 13:22 ` [PATCH 08/14] nvmem: core: validate nvmem config before parsing Srinivas Kandagatla
2020-03-10 13:22 ` [PATCH 09/14] nvmem: check for NULL reg_read and reg_write before dereferencing Srinivas Kandagatla
2020-03-10 13:22 ` [PATCH 10/14] nvmem: imx-ocotp: Drop unnecessary initializations Srinivas Kandagatla
2020-03-10 13:22 ` [PATCH 11/14] Bindings: nvmem: add bindings for JZ4780 efuse Srinivas Kandagatla
2020-03-10 13:22 ` [PATCH 12/14] nvmem: add driver " Srinivas Kandagatla
2020-03-10 13:22 ` [PATCH 13/14] Documentation: ABI: nvmem: add documentation for JZ4780 efuse ABI Srinivas Kandagatla
2020-03-10 13:22 ` [PATCH 14/14] nvmem: jz4780-efuse: fix build warnings on ARCH=x86_64 or riscv Srinivas Kandagatla
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