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Serial fixes for 3.14-rc1

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Here are tiny and assorted serial driver fixes that have been in a
 branch in my tree for a while and somehow did not get properly merged
 into my big TTY / Serial pull request for 3.14-rc1.  Sorry about that.
 
 All have been in linux-next for a while with no issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull serial fixes from Greg KH:
 "Here are tiny and assorted serial driver fixes that have been in a
  branch in my tree for a while and somehow did not get properly merged
  into my big TTY / Serial pull request for 3.14-rc1.  Sorry about that.

  All have been in linux-next for a while with no issues"

* tag 'tty-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  tty: xuartps: Properly guard sysrq specific code
  serial: 8250: Fix initialisation of Quatech cards with the AMCC PCI chip
  serial: icom: dereference after free in load_code()
  serial: 8250_dw: add new ACPI IDs
  tty: serial: pch: don't crash if DMA enabled but not loaded
  serial: samsung: move clock deactivation below uart registration
This commit is contained in:
Linus Torvalds 2014-01-28 18:50:24 -08:00
commit 2ad48ee810
3 changed files with 16 additions and 6 deletions
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4
drivers/tty/serial/icom.c
View File

@ -455,11 +455,11 @@ static void load_code(struct icom_port *icom_port)
for (index = 0; index < fw->size; index++)
new_page[index] = fw->data[index];
release_firmware(fw);
writeb((char) ((fw->size + 16)/16), &icom_port->dram->mac_length);
writel(temp_pci, &icom_port->dram->mac_load_addr);
release_firmware(fw);
/*Setting the syncReg to 0x80 causes adapter to start downloading
the personality code into adapter instruction RAM.
Once code is loaded, it will begin executing and, based on

10
drivers/tty/serial/pch_uart.c
View File

@ -1508,10 +1508,14 @@ static int pch_uart_verify_port(struct uart_port *port,
__func__);
return -EOPNOTSUPP;
#endif
dev_info(priv->port.dev, "PCH UART : Use DMA Mode\n");
if (!priv->use_dma)
if (!priv->use_dma) {
pch_request_dma(port);
priv->use_dma = 1;
if (priv->chan_rx)
priv->use_dma = 1;
}
dev_info(priv->port.dev, "PCH UART: %s\n",
priv->use_dma ?
"Use DMA Mode" : "No DMA");
}
return 0;

8
drivers/tty/serial/samsung.c
View File

@ -1209,7 +1209,6 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport,
/* reset the fifos (and setup the uart) */
s3c24xx_serial_resetport(port, cfg);
clk_disable_unprepare(ourport->clk);
return 0;
}
@ -1287,6 +1286,13 @@ static int s3c24xx_serial_probe(struct platform_device *pdev)
uart_add_one_port(&s3c24xx_uart_drv, &ourport->port);
platform_set_drvdata(pdev, &ourport->port);
/*
* Deactivate the clock enabled in s3c24xx_serial_init_port here,
* so that a potential re-enablement through the pm-callback overlaps
* and keeps the clock enabled in this case.
*/
clk_disable_unprepare(ourport->clk);
#ifdef CONFIG_SAMSUNG_CLOCK
ret = device_create_file(&pdev->dev, &dev_attr_clock_source);
if (ret < 0)