AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-11-26 23:30:55 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

tty: serial: qcom_geni_serial: Use iowrite32_rep to write to FIFO

Browse Source 
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: Karthikeyan Ramasubramanian <kramasub@codeaurora.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Karthikeyan Ramasubramanian 2018-05-03 14:14:38 -06:00 committed by Greg Kroah-Hartman
parent 7fb5b88001
commit 69736b57df
1 changed files with 4 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/tty/serial/qcom_geni_serial.c
View File

@ -600,14 +600,15 @@ static void qcom_geni_serial_handle_tx(struct uart_port *uport)
remaining = chunk; remaining = chunk;
for (i = 0; i < chunk; ) { for (i = 0; i < chunk; ) {
unsigned int tx_bytes; unsigned int tx_bytes;
unsigned int buf = 0; u8 buf[sizeof(u32)];
int c; int c;
memset(buf, 0, ARRAY_SIZE(buf));
tx_bytes = min_t(size_t, remaining, port->tx_bytes_pw); tx_bytes = min_t(size_t, remaining, port->tx_bytes_pw);
for (c = 0; c < tx_bytes ; c++) 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; i += tx_bytes;
tail = (tail + tx_bytes) & (UART_XMIT_SIZE - 1); tail = (tail + tx_bytes) & (UART_XMIT_SIZE - 1);