diff options
| author | Mallikarjun Kasoju <mkasoju@nvidia.com> | 2012-08-14 13:51:52 +0530 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2013-09-14 00:48:22 -0700 |
| commit | c0532461fd42754e68f0836cab0f144e781d8fc2 (patch) | |
| tree | 2ff4ec8ad04fb02f996fb731e7cad4eb95f7db8e /drivers/crypto | |
| parent | 591d4195cd891b36e54f7cb111da125c9e866629 (diff) | |
crypto: tegra-se: Limit max bytes to process
Security Engine can process maximum of 0xFFFFF 16 byte
blocks. Add check condition for the same.
Bug 961700
Change-Id: Iade1abfd27a9b784de8e0a59f319d403a4beb187
Signed-off-by: Mallikarjun Kasoju <mkasoju@nvidia.com>
Reviewed-on: http://git-master/r/123291
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Venkata Jagadish <vjagadish@nvidia.com>
Reviewed-by: Venkat Moganty <vmoganty@nvidia.com>
Rebase-Id: R5f63f4f627e2b5f73f45c0bf565e933a9484d374
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/tegra-se.c | 3 | ||||
| -rw-r--r-- | drivers/crypto/tegra-se.h | 1 |
2 files changed, 4 insertions, 0 deletions
diff --git a/drivers/crypto/tegra-se.c b/drivers/crypto/tegra-se.c index 96619154630c..e4df734914cb 100644 --- a/drivers/crypto/tegra-se.c +++ b/drivers/crypto/tegra-se.c @@ -597,6 +597,9 @@ static int tegra_se_start_operation(struct tegra_se_dev *se_dev, u32 nbytes, int ret = 0; u32 val = 0; + if (nblocks > SE_MAX_LAST_BLOCK_SIZE) + return -EINVAL; + /* clear any pending interrupts */ val = se_readl(se_dev, SE_INT_STATUS_REG_OFFSET); se_writel(se_dev, val, SE_INT_STATUS_REG_OFFSET); diff --git a/drivers/crypto/tegra-se.h b/drivers/crypto/tegra-se.h index cd3e9ab2c590..98cb82544454 100644 --- a/drivers/crypto/tegra-se.h +++ b/drivers/crypto/tegra-se.h @@ -33,6 +33,7 @@ #define SE_MAX_DST_SG_COUNT 50 #define TEGRA_SE_KEYSLOT_COUNT 16 +#define SE_MAX_LAST_BLOCK_SIZE 0xFFFFF /* SE register definitions */ #define SE_CONFIG_REG_OFFSET 0x014 |