Thread (138 messages) 138 messages, 4 authors, 2021-03-03
STALE1917d REVIEWED: 1 (1M)

[PATCH 4.9 087/134] i2c: brcmstb: Fix brcmstd_send_i2c_cmd condition

From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2021-03-01 17:54:23
Also in: lkml
Subsystem: broadcom brcmstb i2c driver, i2c subsystem, i2c subsystem host drivers, the rest · Maintainers: Kamal Dasu, Wolfram Sang, Andi Shyti, Linus Torvalds

From: Maxime Ripard <redacted>

[ Upstream commit a1858ce0cfe31368b23ba55794e409fb57ced4a4 ]

The brcmstb_send_i2c_cmd currently has a condition that is (CMD_RD ||
CMD_WR) which always evaluates to true, while the obvious fix is to test
whether the cmd variable passed as parameter holds one of these two
values.

Fixes: dd1aa2524bc5 ("i2c: brcmstb: Add Broadcom settop SoC i2c controller driver")
Reported-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Maxime Ripard <redacted>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/i2c/busses/i2c-brcmstb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/i2c/busses/i2c-brcmstb.c b/drivers/i2c/busses/i2c-brcmstb.c
index 78792b4d6437c..a658f975605a7 100644
--- a/drivers/i2c/busses/i2c-brcmstb.c
+++ b/drivers/i2c/busses/i2c-brcmstb.c
@@ -318,7 +318,7 @@ static int brcmstb_send_i2c_cmd(struct brcmstb_i2c_dev *dev,
 		goto cmd_out;
 	}
 
-	if ((CMD_RD || CMD_WR) &&
+	if ((cmd == CMD_RD || cmd == CMD_WR) &&
 	    bsc_readl(dev, iic_enable) & BSC_IIC_EN_NOACK_MASK) {
 		rc = -EREMOTEIO;
 		dev_dbg(dev->device, "controller received NOACK intr for %s\n",
-- 
2.27.0


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