diff options
| author | Saksham Jain <saksham.jain@nxp.com> | 2016-03-23 16:24:41 +0530 |
|---|---|---|
| committer | York Sun <york.sun@nxp.com> | 2016-03-29 08:46:22 -0700 |
| commit | 69b6a796f7a7cf2a7946e07e32346bf5595829d5 (patch) | |
| tree | 048c8140e739a02d372fed20ee975691690864c1 /drivers/crypto | |
| parent | 4a97a0c91d25763d7c3af5530c5e89f53fee7643 (diff) | |
crypto/fsl: Correct 64-bit write when MMU disabled
When MMU is disabled, 64-bit write must be aligned at 64-bit
boundary. Becaue the memory location is not guaranteed to be 64-bit
aligned, the 64-bit write needs to be split into two 32-bit writes
to avoid the alignment exception.
Signed-off-by: Aneesh Bansal <aneesh.bansal@nxp.com>
Signed-off-by: Saksham Jain <saksham.jain@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/fsl/desc_constr.h | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/crypto/fsl/desc_constr.h b/drivers/crypto/fsl/desc_constr.h index 4ea93b03a2..7dad753981 100644 --- a/drivers/crypto/fsl/desc_constr.h +++ b/drivers/crypto/fsl/desc_constr.h @@ -112,10 +112,9 @@ static inline void append_ptr(u32 *desc, dma_addr_t ptr) #ifdef CONFIG_PHYS_64BIT /* The Position of low and high part of 64 bit address * will depend on the endianness of CAAM Block */ - union ptr_addr_t ptr_addr; - ptr_addr.m_halfs.high = (u32)(ptr >> 32); - ptr_addr.m_halfs.low = (u32)ptr; - *offset = ptr_addr.m_whole; + union ptr_addr_t *ptr_addr = (union ptr_addr_t *)offset; + ptr_addr->m_halfs.high = (u32)(ptr >> 32); + ptr_addr->m_halfs.low = (u32)ptr; #else *offset = ptr; #endif |