diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2013-01-22 08:19:14 +0100 |
|---|---|---|
| committer | Jon Mason <jon.mason@intel.com> | 2013-05-15 19:57:24 +0200 |
| commit | ad3e2751e7c546ae678be1f8d86e898506b42cef (patch) | |
| tree | 1a8f9da0ae59e8b24abe48b33a3221198ee7f4b4 /drivers/ntb/ntb_hw.c | |
| parent | NTB: variable dereferenced before check (diff) | |
| download | linux-ad3e2751e7c546ae678be1f8d86e898506b42cef.tar.xz linux-ad3e2751e7c546ae678be1f8d86e898506b42cef.zip | |
ntb: off by one sanity checks
These tests are off by one. If "mw" is equal to NTB_NUM_MW then we
would go beyond the end of the ndev->mw[] array.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jon Mason <jon.mason@intel.com>
Diffstat (limited to 'drivers/ntb/ntb_hw.c')
| -rw-r--r-- | drivers/ntb/ntb_hw.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/ntb/ntb_hw.c b/drivers/ntb/ntb_hw.c index f802e7c92356..195cc51ffbf6 100644 --- a/drivers/ntb/ntb_hw.c +++ b/drivers/ntb/ntb_hw.c @@ -345,7 +345,7 @@ int ntb_read_remote_spad(struct ntb_device *ndev, unsigned int idx, u32 *val) */ void __iomem *ntb_get_mw_vbase(struct ntb_device *ndev, unsigned int mw) { - if (mw > NTB_NUM_MW) + if (mw >= NTB_NUM_MW) return NULL; return ndev->mw[mw].vbase; @@ -362,7 +362,7 @@ void __iomem *ntb_get_mw_vbase(struct ntb_device *ndev, unsigned int mw) */ resource_size_t ntb_get_mw_size(struct ntb_device *ndev, unsigned int mw) { - if (mw > NTB_NUM_MW) + if (mw >= NTB_NUM_MW) return 0; return ndev->mw[mw].bar_sz; @@ -380,7 +380,7 @@ resource_size_t ntb_get_mw_size(struct ntb_device *ndev, unsigned int mw) */ void ntb_set_mw_addr(struct ntb_device *ndev, unsigned int mw, u64 addr) { - if (mw > NTB_NUM_MW) + if (mw >= NTB_NUM_MW) return; dev_dbg(&ndev->pdev->dev, "Writing addr %Lx to BAR %d\n", addr, |