595572aae3
Smatch static checker reported below warning:
drivers/iommu/iommufd/fault.c:131 iommufd_device_get_attach_handle()
warn: 'handle' is an error pointer or valid
Fix it by checking 'handle' with IS_ERR().
Fixes: b7d8833677 ("iommufd: Fault-capable hwpt attach/detach/replace")
Link: https://lore.kernel.org/r/20240712025819.63147-1-baolu.lu@linux.intel.com
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/linux-iommu/8bb4f37a-4514-4dea-aabb-7380be303895@stanley.mountain/
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.