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TTY/Serial fixes for 6.4-rc3

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Here are some small tty and serial driver fixes for 6.4-rc3 to resolve
 some reported problems, and add some new device ids.  These include:
   - termios documentation updates
   - vc_screen use-after-free fix
   - memory leak fix in arc_uart driver
   - new 8250 driver ids
   - other small serial driver fixes
 
 All of these have been in linux-next for a while with no reported
 problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.4-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty / serial fixes from Greg KH:
 "Here are some small tty and serial driver fixes for 6.4-rc3 to resolve
  some reported problems, and add some new device ids. These include:

   - termios documentation updates

   - vc_screen use-after-free fix

   - memory leak fix in arc_uart driver

   - new 8250 driver ids

   - other small serial driver fixes

  All of these have been in linux-next for a while with no reported
  problems"

* tag 'tty-6.4-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  vc_screen: reload load of struct vc_data pointer in vcs_write() to avoid UAF
  serial: qcom-geni: fix enabling deactivated interrupt
  serial: 8250_bcm7271: fix leak in `brcmuart_probe`
  serial: 8250_bcm7271: balance clk_enable calls
  serial: arc_uart: fix of_iomap leak in `arc_serial_probe`
  serial: 8250: Document termios parameter of serial8250_em485_config()
  serial: Add support for Advantech PCI-1611U card
  serial: 8250_exar: Add support for USR298x PCI Modems
This commit is contained in:
Linus Torvalds 2023-05-20 10:33:57 -07:00
commit 0dd2a6fb1e
7 changed files with 45 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
drivers/tty/serial/8250/8250_bcm7271.c
View file

@ -1012,7 +1012,7 @@ static int brcmuart_probe(struct platform_device *pdev)
of_property_read_u32(np, "clock-frequency", &clk_rate);
/* See if a Baud clock has been specified */
baud_mux_clk = of_clk_get_by_name(np, "sw_baud");
baud_mux_clk = devm_clk_get(dev, "sw_baud");
if (IS_ERR(baud_mux_clk)) {
if (PTR_ERR(baud_mux_clk) == -EPROBE_DEFER) {
ret = -EPROBE_DEFER;
@ -1032,7 +1032,7 @@ static int brcmuart_probe(struct platform_device *pdev)
if (clk_rate == 0) {
dev_err(dev, "clock-frequency or clk not defined\n");
ret = -EINVAL;
goto release_dma;
goto err_clk_disable;
}
dev_dbg(dev, "DMA is %senabled\n", priv->dma_enabled ? "" : "not ");
@ -1119,6 +1119,8 @@ static int brcmuart_probe(struct platform_device *pdev)
serial8250_unregister_port(priv->line);
err:
brcmuart_free_bufs(dev, priv);
err_clk_disable:
clk_disable_unprepare(baud_mux_clk);
release_dma:
if (priv->dma_enabled)
brcmuart_arbitration(priv, 0);
@ -1133,6 +1135,7 @@ static int brcmuart_remove(struct platform_device *pdev)
hrtimer_cancel(&priv->hrt);
serial8250_unregister_port(priv->line);
brcmuart_free_bufs(&pdev->dev, priv);
clk_disable_unprepare(priv->baud_mux_clk);
if (priv->dma_enabled)
brcmuart_arbitration(priv, 0);
return 0;

17
drivers/tty/serial/8250/8250_exar.c
View file

@ -40,9 +40,13 @@
#define PCI_DEVICE_ID_COMMTECH_4224PCIE 0x0020
#define PCI_DEVICE_ID_COMMTECH_4228PCIE 0x0021
#define PCI_DEVICE_ID_COMMTECH_4222PCIE 0x0022
#define PCI_DEVICE_ID_EXAR_XR17V4358 0x4358
#define PCI_DEVICE_ID_EXAR_XR17V8358 0x8358
#define PCI_SUBDEVICE_ID_USR_2980 0x0128
#define PCI_SUBDEVICE_ID_USR_2981 0x0129
#define PCI_DEVICE_ID_SEALEVEL_710xC 0x1001
#define PCI_DEVICE_ID_SEALEVEL_720xC 0x1002
#define PCI_DEVICE_ID_SEALEVEL_740xC 0x1004
@ -829,6 +833,15 @@ static const struct exar8250_board pbn_exar_XR17V8358 = {
(kernel_ulong_t)&bd \
}
#define USR_DEVICE(devid, sdevid, bd) { \
PCI_DEVICE_SUB( \
PCI_VENDOR_ID_USR, \
PCI_DEVICE_ID_EXAR_##devid, \
PCI_VENDOR_ID_EXAR, \
PCI_SUBDEVICE_ID_USR_##sdevid), 0, 0, \
(kernel_ulong_t)&bd \
}
static const struct pci_device_id exar_pci_tbl[] = {
EXAR_DEVICE(ACCESSIO, COM_2S, pbn_exar_XR17C15x),
EXAR_DEVICE(ACCESSIO, COM_4S, pbn_exar_XR17C15x),
@ -853,6 +866,10 @@ static const struct pci_device_id exar_pci_tbl[] = {
IBM_DEVICE(XR17C152, SATURN_SERIAL_ONE_PORT, pbn_exar_ibm_saturn),
/* USRobotics USR298x-OEM PCI Modems */
USR_DEVICE(XR17C152, 2980, pbn_exar_XR17C15x),
USR_DEVICE(XR17C152, 2981, pbn_exar_XR17C15x),
/* Exar Corp. XR17C15[248] Dual/Quad/Octal UART */
EXAR_DEVICE(EXAR, XR17C152, pbn_exar_XR17C15x),
EXAR_DEVICE(EXAR, XR17C154, pbn_exar_XR17C15x),

5
drivers/tty/serial/8250/8250_pci.c
View file

@ -1920,6 +1920,8 @@ pci_moxa_setup(struct serial_private *priv,
#define PCI_SUBDEVICE_ID_SIIG_DUAL_30 0x2530
#define PCI_VENDOR_ID_ADVANTECH 0x13fe
#define PCI_DEVICE_ID_INTEL_CE4100_UART 0x2e66
#define PCI_DEVICE_ID_ADVANTECH_PCI1600 0x1600
#define PCI_DEVICE_ID_ADVANTECH_PCI1600_1611 0x1611
#define PCI_DEVICE_ID_ADVANTECH_PCI3620 0x3620
#define PCI_DEVICE_ID_ADVANTECH_PCI3618 0x3618
#define PCI_DEVICE_ID_ADVANTECH_PCIf618 0xf618
@ -4085,6 +4087,9 @@ static SIMPLE_DEV_PM_OPS(pciserial_pm_ops, pciserial_suspend_one,
pciserial_resume_one);
static const struct pci_device_id serial_pci_tbl[] = {
{ PCI_VENDOR_ID_ADVANTECH, PCI_DEVICE_ID_ADVANTECH_PCI1600,
PCI_DEVICE_ID_ADVANTECH_PCI1600_1611, PCI_ANY_ID, 0, 0,
pbn_b0_4_921600 },
/* Advantech use PCI_DEVICE_ID_ADVANTECH_PCI3620 (0x3620) as 'PCI_SUBVENDOR_ID' */
{ PCI_VENDOR_ID_ADVANTECH, PCI_DEVICE_ID_ADVANTECH_PCI3620,
PCI_DEVICE_ID_ADVANTECH_PCI3620, 0x0001, 0, 0,

1
drivers/tty/serial/8250/8250_port.c
View file

@ -669,6 +669,7 @@ EXPORT_SYMBOL_GPL(serial8250_em485_supported);
/**
* serial8250_em485_config() - generic ->rs485_config() callback
* @port: uart port
* @termios: termios structure
* @rs485: rs485 settings
*
* Generic callback usable by 8250 uart drivers to activate rs485 settings

7
drivers/tty/serial/arc_uart.c
View file

@ -606,10 +606,11 @@ static int arc_serial_probe(struct platform_device *pdev)
}
uart->baud = val;
port->membase = of_iomap(np, 0);
if (!port->membase)
port->membase = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(port->membase)) {
/* No point of dev_err since UART itself is hosed here */
return -ENXIO;
return PTR_ERR(port->membase);
}
port->irq = irq_of_parse_and_map(np, 0);

9
drivers/tty/serial/qcom_geni_serial.c
View file

@ -1664,19 +1664,18 @@ static int qcom_geni_serial_probe(struct platform_device *pdev)
uport->private_data = &port->private_data;
platform_set_drvdata(pdev, port);
ret = uart_add_one_port(drv, uport);
if (ret)
return ret;
irq_set_status_flags(uport->irq, IRQ_NOAUTOEN);
ret = devm_request_irq(uport->dev, uport->irq, qcom_geni_serial_isr,
IRQF_TRIGGER_HIGH, port->name, uport);
if (ret) {
dev_err(uport->dev, "Failed to get IRQ ret %d\n", ret);
uart_remove_one_port(drv, uport);
return ret;
}
ret = uart_add_one_port(drv, uport);
if (ret)
return ret;
/*
* Set pm_runtime status as ACTIVE so that wakeup_irq gets
* enabled/disabled from dev_pm_arm_wake_irq during system

11
drivers/tty/vt/vc_screen.c
View file

@ -656,10 +656,17 @@ vcs_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
}
}
/* The vcs_size might have changed while we slept to grab
* the user buffer, so recheck.
/* The vc might have been freed or vcs_size might have changed
* while we slept to grab the user buffer, so recheck.
* Return data written up to now on failure.
*/
vc = vcs_vc(inode, &viewed);
if (!vc) {
if (written)
break;
ret = -ENXIO;
goto unlock_out;
}
size = vcs_size(vc, attr, false);
if (size < 0) {
if (written)