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i2c: imx-lpi2c: clean rx/tx buffers upon new message

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[ Upstream commit 987dd36c01 ]

When start sending a new message clear the Rx & Tx buffer pointers in
order to avoid using stale pointers.

Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Tested-by: Emanuele Ghidoli <emanuele.ghidoli@toradex.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Alexander Stein
2023-01-30 16:32:46 +01:00
committed by Greg Kroah-Hartman
parent 81c30f89b9
commit e1f80b4dfa
1 changed files with 2 additions and 0 deletions
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2
drivers/i2c/busses/i2c-imx-lpi2c.c
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@@ -462,6 +462,8 @@ static int lpi2c_imx_xfer(struct i2c_adapter *adapter,
if (num == 1 && msgs[0].len == 0) if (num == 1 && msgs[0].len == 0)
goto stop; goto stop;
lpi2c_imx->rx_buf = NULL;
lpi2c_imx->tx_buf = NULL;
lpi2c_imx->delivered = 0; lpi2c_imx->delivered = 0;
lpi2c_imx->msglen = msgs[i].len; lpi2c_imx->msglen = msgs[i].len;
init_completion(&lpi2c_imx->complete); init_completion(&lpi2c_imx->complete);