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* [PATCH] soc: bcm: brcmstb: biuctrl: Register writes require a barrier
@ 2019-05-10 19:46 Florian Fainelli
  2019-05-13 18:08 ` Florian Fainelli
  0 siblings, 1 reply; 2+ messages in thread
From: Florian Fainelli @ 2019-05-10 19:46 UTC (permalink / raw)
  To: linux-arm-kernel
  Cc: Florian Fainelli, Brian Norris, Gregory Fong,
	maintainer:BROADCOM BCM7XXX ARM ARCHITECTURE, open list

The BIUCTRL register writes require that a data barrier be inserted
after comitting the write to the register for the block to latch in the
recently written values. Reads have no such requirement and are not
changed.

Fixes: 34642650e5bc ("soc: Move brcmstb to bcm/brcmstb")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 drivers/soc/bcm/brcmstb/biuctrl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/soc/bcm/brcmstb/biuctrl.c b/drivers/soc/bcm/brcmstb/biuctrl.c
index c16273b31b94..20b63bee5b09 100644
--- a/drivers/soc/bcm/brcmstb/biuctrl.c
+++ b/drivers/soc/bcm/brcmstb/biuctrl.c
@@ -56,7 +56,7 @@ static inline void cbc_writel(u32 val, int reg)
 	if (offset == -1)
 		return;
 
-	writel_relaxed(val,  cpubiuctrl_base + offset);
+	writel(val, cpubiuctrl_base + offset);
 }
 
 enum cpubiuctrl_regs {
-- 
2.17.1


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2019-05-10 19:46 [PATCH] soc: bcm: brcmstb: biuctrl: Register writes require a barrier Florian Fainelli
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