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Commit 69736b57 authored by Karthikeyan Ramasubramanian's avatar Karthikeyan Ramasubramanian Committed by Greg Kroah-Hartman
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tty: serial: qcom_geni_serial: Use iowrite32_rep to write to FIFO 



Use iowrite32_rep to write to the hardware FIFO so that the code does
not have to worry about the system endianness.

Signed-off-by: default avatarKarthikeyan Ramasubramanian <kramasub@codeaurora.org>
Reviewed-by: default avatarMatthias Kaehlcke <mka@chromium.org>
Reviewed-by: default avatarStephen Boyd <swboyd@chromium.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 7fb5b880

drivers/tty/serial/qcom_geni_serial.c

+4 −3
Original line number Diff line number Diff line
@@ -600,14 +600,15 @@ static void qcom_geni_serial_handle_tx(struct uart_port *uport) 
	remaining = chunk;

	for (i = 0; i < chunk; ) {

		unsigned int tx_bytes;

		unsigned int buf = 0;

		u8 buf[sizeof(u32)];

		int c;



		memset(buf, 0, ARRAY_SIZE(buf));

		tx_bytes = min_t(size_t, remaining, port->tx_bytes_pw);

		for (c = 0; c < tx_bytes ; c++)

			buf |= (xmit->buf[tail + c] << (c * BITS_PER_BYTE));

			buf[c] = xmit->buf[tail + c];



		writel_relaxed(buf, uport->membase + SE_GENI_TX_FIFOn);

		iowrite32_rep(uport->membase + SE_GENI_TX_FIFOn, buf, 1);



		i += tx_bytes;

		tail = (tail + tx_bytes) & (UART_XMIT_SIZE - 1);