From cbc22b062106993980df43a7ffa93351d3218844 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Thu, 9 May 2019 13:20:48 +0800 Subject: [PATCH] Revert "crypto: caam/jr - Remove extra memory barrier during job ring dequeue" This reverts commit bbfcac5ff5f26aafa51935a62eb86b6eacfe8a49. It caused a crash regression on powerpc: https://lore.kernel.org/linux-crypto/87pnp2aflz.fsf@concordia.ellerman.id.au/ Signed-off-by: Herbert Xu --- drivers/crypto/caam/jr.c | 2 +- drivers/crypto/caam/regs.h | 8 -------- 2 files changed, 1 insertion(+), 9 deletions(-) diff --git a/drivers/crypto/caam/jr.c b/drivers/crypto/caam/jr.c index 044a69b526f7..1de2562d0982 100644 --- a/drivers/crypto/caam/jr.c +++ b/drivers/crypto/caam/jr.c @@ -213,7 +213,7 @@ static void caam_jr_dequeue(unsigned long devarg) mb(); /* set done */ - wr_reg32_relaxed(&jrp->rregs->outring_rmvd, 1); + wr_reg32(&jrp->rregs->outring_rmvd, 1); jrp->out_ring_read_index = (jrp->out_ring_read_index + 1) & (JOBR_DEPTH - 1); diff --git a/drivers/crypto/caam/regs.h b/drivers/crypto/caam/regs.h index c1fa1ec701d9..8591914d5c51 100644 --- a/drivers/crypto/caam/regs.h +++ b/drivers/crypto/caam/regs.h @@ -96,14 +96,6 @@ cpu_to_caam(16) cpu_to_caam(32) cpu_to_caam(64) -static inline void wr_reg32_relaxed(void __iomem *reg, u32 data) -{ - if (caam_little_end) - writel_relaxed(data, reg); - else - writel_relaxed(cpu_to_be32(data), reg); -} - static inline void wr_reg32(void __iomem *reg, u32 data) { if (caam_little_end) -- 2.30.2