From: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Rafael J. Wysocki" <rafael@kernel.org>,
Stuart Yoder <stuyoder@gmail.com>,
Laurentiu Tudor <laurentiu.tudor@nxp.com>,
Abel Vesa <abel.vesa@nxp.com>, Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
"K. Y. Srinivasan" <kys@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
Stephen Hemminger <sthemmin@microsoft.com>,
Wei Liu <wei.liu@kernel.org>, Dexuan Cui <decui@microsoft.com>,
Bjorn Helgaas <bhelgaas@google.com>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Mathieu Poirier <mathieu.poirier@linaro.org>,
Vineeth Vijayan <vneethv@linux.ibm.com>,
Peter Oberparleiter <oberpar@linux.ibm.com>,
Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Alexander Gordeev <agordeev@linux.ibm.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Sven Schnelle <svens@linux.ibm.com>,
Andy Gross <agross@kernel.org>,
Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
Mark Brown <broonie@kernel.org>,
"Michael S. Tsirkin" <mst@redhat.com>,
Jason Wang <jasowang@redhat.com>,
linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org,
NXP Linux Team <linux-imx@nxp.com>,
linux-arm-kernel@lists.infradead.org,
linux-hyperv@vger.kernel.org, linux-pci@vger.kernel.org,
linux-remoteproc@vger.kernel.org, linux-s390@vger.kernel.org,
linux-arm-msm@vger.kernel.org, alsa-devel@alsa-project.org,
linux-spi@vger.kernel.org,
virtualization@lists.linux-foundation.org,
Linus Torvalds <torvalds@linux-foundation.org>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>,
Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Subject: [PATCH v2 04/11] hv: vmbus: use helper for safer setting of driver_override
Date: Wed, 23 Feb 2022 20:13:03 +0100 [thread overview]
Message-ID: <20220223191310.347669-5-krzysztof.kozlowski@canonical.com> (raw)
In-Reply-To: <20220223191310.347669-1-krzysztof.kozlowski@canonical.com>
Use a helper for seting driver_override to reduce amount of duplicated
code.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
---
drivers/hv/vmbus_drv.c | 24 ++++--------------------
1 file changed, 4 insertions(+), 20 deletions(-)
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index 12a2b37e87f3..f2435cc8b680 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -575,31 +575,15 @@ static ssize_t driver_override_store(struct device *dev,
const char *buf, size_t count)
{
struct hv_device *hv_dev = device_to_hv_device(dev);
- char *driver_override, *old, *cp;
+ int ret;
/* We need to keep extra room for a newline */
if (count >= (PAGE_SIZE - 1))
return -EINVAL;
- driver_override = kstrndup(buf, count, GFP_KERNEL);
- if (!driver_override)
- return -ENOMEM;
-
- cp = strchr(driver_override, '\n');
- if (cp)
- *cp = '\0';
-
- device_lock(dev);
- old = hv_dev->driver_override;
- if (strlen(driver_override)) {
- hv_dev->driver_override = driver_override;
- } else {
- kfree(driver_override);
- hv_dev->driver_override = NULL;
- }
- device_unlock(dev);
-
- kfree(old);
+ ret = driver_set_override(dev, &hv_dev->driver_override, buf);
+ if (ret)
+ return ret;
return count;
}
--
2.32.0
next prev parent reply other threads:[~2022-02-23 19:14 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-23 19:12 [PATCH v2 00/11] Fix broken usage of driver_override (and kfree of static memory) Krzysztof Kozlowski
2022-02-23 19:13 ` [PATCH v2 01/11] driver: platform: add and use helper for safer setting of driver_override Krzysztof Kozlowski
2022-02-23 21:33 ` Michael S. Tsirkin
2022-02-24 7:46 ` Krzysztof Kozlowski
2022-02-23 21:53 ` Bjorn Helgaas
2022-02-24 7:47 ` Krzysztof Kozlowski
2022-02-24 8:43 ` Krzysztof Kozlowski
2022-02-23 19:13 ` [PATCH v2 02/11] amba: " Krzysztof Kozlowski
2022-02-23 19:13 ` [PATCH v2 03/11] fsl-mc: " Krzysztof Kozlowski
2022-02-23 19:13 ` Krzysztof Kozlowski [this message]
2022-02-23 19:13 ` [PATCH v2 05/11] pci: " Krzysztof Kozlowski
2022-02-23 21:51 ` Bjorn Helgaas
2022-02-24 7:49 ` Krzysztof Kozlowski
2022-02-24 23:52 ` Bjorn Helgaas
2022-02-25 9:36 ` Krzysztof Kozlowski
2022-02-25 17:13 ` Bjorn Helgaas
2022-02-23 19:13 ` [PATCH v2 06/11] s390: cio: " Krzysztof Kozlowski
2022-02-23 19:14 ` [PATCH v2 07/11] spi: " Krzysztof Kozlowski
2022-02-23 20:04 ` Mark Brown
2022-02-23 20:13 ` Krzysztof Kozlowski
2022-02-23 19:14 ` [PATCH v2 08/11] vdpa: " Krzysztof Kozlowski
2022-02-23 19:14 ` [PATCH v2 09/11] clk: imx: scu: fix kfree() of static memory on setting driver_override Krzysztof Kozlowski
2022-02-23 19:19 ` Krzysztof Kozlowski
2022-02-23 19:14 ` [PATCH v2 10/11] slimbus: qcom-ngd: " Krzysztof Kozlowski
2022-02-23 19:14 ` [PATCH v2 11/11] rpmsg: " Krzysztof Kozlowski
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