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staging: atomisp: potential underflow in atomisp_get_metadata_by_type()

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md_type is an enum.  On my tests, GCC treats it as unsigned but
according to the C standard it's an implementation dependant thing so we
should check for negatives.

Fixes: a49d25364d ("staging/atomisp: Add support for the Intel IPU v2")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dan Carpenter
2017-03-13 15:34:14 +03:00
committed by Greg Kroah-Hartman
parent cfd23945be
commit 39c116dcfd
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/media/atomisp/pci/atomisp2/atomisp_cmd.c
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@@ -3004,7 +3004,7 @@ int atomisp_get_metadata_by_type(struct atomisp_sub_device *asd, int flag,
return 0;
md_type = md->type;
if (md_type >= ATOMISP_METADATA_TYPE_NUM)
if (md_type < 0 || md_type >= ATOMISP_METADATA_TYPE_NUM)
return -EINVAL;
/* This is done in the atomisp_buf_done() */