[PATCH 1/3] crypto: stm32 - CRC use relaxed function

[Lionel Debieve]

In case of arm soc support, readl and writel will
be optimized using relaxed functions

Signed-off-by: Lionel Debieve <lionel.debi...@st.com>
Reviewed-by: Fabien Dessenne <fabien.desse...@st.com>
---
 drivers/crypto/stm32/stm32_crc32.c | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/drivers/crypto/stm32/stm32_crc32.c 
b/drivers/crypto/stm32/stm32_crc32.c
index ec83b1e..04d2f4b 100644
--- a/drivers/crypto/stm32/stm32_crc32.c
+++ b/drivers/crypto/stm32/stm32_crc32.c
@@ -107,12 +107,12 @@ static int stm32_crc_init(struct shash_desc *desc)
        spin_unlock_bh(&crc_list.lock);
 
        /* Reset, set key, poly and configure in bit reverse mode */
-       writel(bitrev32(mctx->key), ctx->crc->regs + CRC_INIT);
-       writel(bitrev32(mctx->poly), ctx->crc->regs + CRC_POL);
-       writel(CRC_CR_RESET | CRC_CR_REVERSE, ctx->crc->regs + CRC_CR);
+       writel_relaxed(bitrev32(mctx->key), ctx->crc->regs + CRC_INIT);
+       writel_relaxed(bitrev32(mctx->poly), ctx->crc->regs + CRC_POL);
+       writel_relaxed(CRC_CR_RESET | CRC_CR_REVERSE, ctx->crc->regs + CRC_CR);
 
        /* Store partial result */
-       ctx->partial = readl(ctx->crc->regs + CRC_DR);
+       ctx->partial = readl_relaxed(ctx->crc->regs + CRC_DR);
        ctx->crc->nb_pending_bytes = 0;
 
        return 0;
@@ -135,7 +135,8 @@ static int stm32_crc_update(struct shash_desc *desc, const 
u8 *d8,
 
                if (crc->nb_pending_bytes == sizeof(u32)) {
                        /* Process completed pending data */
-                       writel(*(u32 *)crc->pending_data, crc->regs + CRC_DR);
+                       writel_relaxed(*(u32 *)crc->pending_data,
+                                      crc->regs + CRC_DR);
                        crc->nb_pending_bytes = 0;
                }
        }
@@ -143,10 +144,10 @@ static int stm32_crc_update(struct shash_desc *desc, 
const u8 *d8,
        d32 = (u32 *)d8;
        for (i = 0; i < length >> 2; i++)
                /* Process 32 bits data */
-               writel(*(d32++), crc->regs + CRC_DR);
+               writel_relaxed(*(d32++), crc->regs + CRC_DR);
 
        /* Store partial result */
-       ctx->partial = readl(crc->regs + CRC_DR);
+       ctx->partial = readl_relaxed(crc->regs + CRC_DR);
 
        /* Check for pending data (non 32 bits) */
        length &= 3;
-- 
2.7.4