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Serial driver fixes for 6.4-rc7

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Here are two small serial driver fixes for 6.4-rc7 that resolve some
 reported problems:
  - lantiq serial driver irq fix
  - fsl_lpuart serial driver watermark fix
 
 Both of these have been in linux-next this week with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.4-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull serial driver fixes from Greg KH:
 "Here are two small serial driver fixes for 6.4-rc7 that resolve some
  reported problems:

   - lantiq serial driver irq fix

   - fsl_lpuart serial driver watermark fix

  Both of these have been in linux-next this week with no reported issues"

* tag 'tty-6.4-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  tty: serial: fsl_lpuart: reduce RX watermark to 0 on LS1028A
  serial: lantiq: add missing interrupt ack
This commit is contained in:
Linus Torvalds 2023-06-17 10:51:35 -07:00
commit 3c0eb44233
2 changed files with 2 additions and 1 deletions
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2
drivers/tty/serial/fsl_lpuart.c
View File

@ -310,7 +310,7 @@ static const struct lpuart_soc_data ls1021a_data = {
static const struct lpuart_soc_data ls1028a_data = {
.devtype = LS1028A_LPUART,
.iotype = UPIO_MEM32,
.rx_watermark = 1,
.rx_watermark = 0,
};
static struct lpuart_soc_data imx7ulp_data = {

1
drivers/tty/serial/lantiq.c
View File

@ -250,6 +250,7 @@ lqasc_err_int(int irq, void *_port)
struct ltq_uart_port *ltq_port = to_ltq_uart_port(port);
spin_lock_irqsave(&ltq_port->lock, flags);
__raw_writel(ASC_IRNCR_EIR, port->membase + LTQ_ASC_IRNCR);
/* clear any pending interrupts */
asc_update_bits(0, ASCWHBSTATE_CLRPE | ASCWHBSTATE_CLRFE |
ASCWHBSTATE_CLRROE, port->membase + LTQ_ASC_WHBSTATE);