linux-kernel - [PATCH 5.5 28/46] nvmem: sprd: Fix the block lock operation

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Message-Id: <20200407101502.527377529@linuxfoundation.org>
Date:   Tue,  7 Apr 2020 12:21:59 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Freeman Liu <freeman.liu@...soc.com>,
        Baolin Wang <baolin.wang7@...il.com>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH 5.5 28/46] nvmem: sprd: Fix the block lock operation

From: Freeman Liu <freeman.liu@...soc.com>

commit c66ebde4d988b592e8f0008e04c47cc4950a49d3 upstream.

According to the Spreadtrum eFuse specification, we should write 0 to
the block to trigger the lock operation.

Fixes: 096030e7f449 ("nvmem: sprd: Add Spreadtrum SoCs eFuse support")
Cc: stable <stable@...r.kernel.org>
Signed-off-by: Freeman Liu <freeman.liu@...soc.com>
Signed-off-by: Baolin Wang <baolin.wang7@...il.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Link: https://lore.kernel.org/r/20200323150007.7487-2-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/nvmem/sprd-efuse.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/nvmem/sprd-efuse.c
+++ b/drivers/nvmem/sprd-efuse.c
@@ -239,7 +239,7 @@ static int sprd_efuse_raw_prog(struct sp
 		ret = -EBUSY;
 	} else {
 		sprd_efuse_set_prog_lock(efuse, lock);
-		writel(*data, efuse->base + SPRD_EFUSE_MEM(blk));
+		writel(0, efuse->base + SPRD_EFUSE_MEM(blk));
 		sprd_efuse_set_prog_lock(efuse, false);
 	}