crypto: stm32 - CRC use relaxed function

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

Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Reviewed-by: Fabien Dessenne <fabien.dessenne@st.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 8 insertions, 7 deletions

diff --git a/drivers/crypto/stm32/stm32_crc32.c b/drivers/crypto/stm32/stm32_crc32.c
index ec83b1e6bfe8..04d2f4ba310b 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;