Commit 294b29f1 authored by Marek Vasut's avatar Marek Vasut Committed by Wolfram Sang
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i2c: xiic: Fix RX IRQ busy check 



In case the XIIC does TX/RX transfer, make sure no other kernel thread
can start another TX transfer at the same time. This could happen since
the driver only checks tx_msg for being non-NULL and returns -EBUSY in
that case, however it is necessary to check also rx_msg for the same.

Signed-off-by: default avatarMarek Vasut <marex@denx.de>
Acked-by: default avatarMichal Simek <michal.simek@xilinx.com>
Signed-off-by: default avatarWolfram Sang <wsa@kernel.org>
parent d12e4bbb

drivers/i2c/busses/i2c-xiic.c

+1 −1
Original line number Diff line number Diff line
@@ -543,7 +543,7 @@ static int xiic_busy(struct xiic_i2c *i2c) 
	int tries = 3;

	int err;



	if (i2c->tx_msg)

	if (i2c->tx_msg || i2c->rx_msg)

		return -EBUSY;



	/* In single master mode bus can only be busy, when in use by this