linux-kernel - [PATCH] i2c: i2c-stm32f7: fix 10-bits check in slave free id search loop

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Message-ID: <1573546784-28182-1-git-send-email-alain.volmat@st.com>
Date:   Tue, 12 Nov 2019 09:19:44 +0100
From:   Alain Volmat <alain.volmat@...com>
To:     <wsa@...-dreams.de>, <pierre-yves.mordret@...com>
CC:     <alain.volmat@...com>, <alexandre.torgue@...com>,
        <linux-i2c@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <fabrice.gasnier@...com>
Subject: [PATCH] i2c: i2c-stm32f7: fix 10-bits check in slave free id search loop

Fix a typo in the free slave id search loop. Instead of I2C_CLIENT_PEC,
it should have been I2C_CLIENT_TEN. The slave id 1 can only handle 7-bit
addresses and thus is not eligible in case of 10-bit addresses.
As a matter of fact none of the slave id support I2C_CLIENT_PEC, overall
check is performed at the beginning of the stm32f7_i2c_reg_slave function.

Fixes: 60d609f30de2 ("i2c: i2c-stm32f7: Add slave support")

Signed-off-by: Alain Volmat <alain.volmat@...com>
---
 drivers/i2c/busses/i2c-stm32f7.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-stm32f7.c b/drivers/i2c/busses/i2c-stm32f7.c
index b9a082f64d58..b2634afe066d 100644
--- a/drivers/i2c/busses/i2c-stm32f7.c
+++ b/drivers/i2c/busses/i2c-stm32f7.c
@@ -1268,7 +1268,7 @@ static int stm32f7_i2c_get_free_slave_id(struct stm32f7_i2c_dev *i2c_dev,
 	 * slave[1] supports 7-bit slave address only
 	 */
 	for (i = STM32F7_I2C_MAX_SLAVE - 1; i >= 0; i--) {
-		if (i == 1 && (slave->flags & I2C_CLIENT_PEC))
+		if (i == 1 && (slave->flags & I2C_CLIENT_TEN))
 			continue;
 		if (!i2c_dev->slave[i]) {
 			*id = i;
-- 
2.7.4