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iommufd: Fix uninitialized rc in iommufd_access_rw()

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commit a05df03a88 upstream.

Reported by smatch:
drivers/iommu/iommufd/device.c:1392 iommufd_access_rw() error: uninitialized symbol 'rc'.

Fixes: 8d40205f60 ("iommufd: Add kAPI toward external drivers for kernel access")
Link: https://patch.msgid.link/r/20250227200729.85030-1-nicolinc@nvidia.com
Cc: stable@vger.kernel.org
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <error27@gmail.com>
Closes: https://lore.kernel.org/r/202502271339.a2nWr9UA-lkp@intel.com/
[nicolinc: can't find an original report but only in "old smatch warnings"]
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Nicolin Chen
2025-02-27 12:07:29 -08:00
committed by Greg Kroah-Hartman
parent e921fce3a2
commit e02c44b6ec
1 changed files with 1 additions and 1 deletions
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drivers/iommu/iommufd/device.c
+1 -1
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@@ -1076,7 +1076,7 @@ int iommufd_access_rw(struct iommufd_access *access, unsigned long iova,
struct io_pagetable *iopt;
struct iopt_area *area;
unsigned long last_iova;
int rc;
int rc = -EINVAL;
if (!length)
return -EINVAL;