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authorLinus Torvalds <torvalds@linux-foundation.org>2023-05-20 10:33:57 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2023-05-20 10:33:57 -0700
commit0dd2a6fb1e34d6dcb96806bc6b111388ad324722 (patch)
tree6f15dc717e3a0444ce0958bd110d246c9096fb3d /drivers
parent2dd0d98d62103c993f74193a7abe97eaef4bc120 (diff)
parent8fb9ea65c9d1338b0d2bb0a9122dc942cdd32357 (diff)
downloadlwn-0dd2a6fb1e34d6dcb96806bc6b111388ad324722.tar.gz
lwn-0dd2a6fb1e34d6dcb96806bc6b111388ad324722.zip
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
Diffstat (limited to 'drivers')
-rw-r--r--drivers/tty/serial/8250/8250_bcm7271.c7
-rw-r--r--drivers/tty/serial/8250/8250_exar.c17
-rw-r--r--drivers/tty/serial/8250/8250_pci.c5
-rw-r--r--drivers/tty/serial/8250/8250_port.c1
-rw-r--r--drivers/tty/serial/arc_uart.c7
-rw-r--r--drivers/tty/serial/qcom_geni_serial.c9
-rw-r--r--drivers/tty/vt/vc_screen.c11
7 files changed, 45 insertions, 12 deletions
diff --git a/drivers/tty/serial/8250/8250_bcm7271.c b/drivers/tty/serial/8250/8250_bcm7271.c
index f801b1f5b46c..af0e1c070187 100644
--- a/drivers/tty/serial/8250/8250_bcm7271.c
+++ b/drivers/tty/serial/8250/8250_bcm7271.c
@@ -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 @@ err1:
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;
diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c
index 64770c62bbec..b406cba10b0e 100644
--- a/drivers/tty/serial/8250/8250_exar.c
+++ b/drivers/tty/serial/8250/8250_exar.c
@@ -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),
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index c55be6fda0ca..e80c4f6551a1 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -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,
diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
index fe8d79c4ae95..c153ba3a018a 100644
--- a/drivers/tty/serial/8250/8250_port.c
+++ b/drivers/tty/serial/8250/8250_port.c
@@ -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
diff --git a/drivers/tty/serial/arc_uart.c b/drivers/tty/serial/arc_uart.c
index 59e25f2b6632..4b2512eef577 100644
--- a/drivers/tty/serial/arc_uart.c
+++ b/drivers/tty/serial/arc_uart.c
@@ -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);
diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c
index 08dc3e2a729c..8582479f0211 100644
--- a/drivers/tty/serial/qcom_geni_serial.c
+++ b/drivers/tty/serial/qcom_geni_serial.c
@@ -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
diff --git a/drivers/tty/vt/vc_screen.c b/drivers/tty/vt/vc_screen.c
index 498ba9c0ee93..829c4be66f3b 100644
--- a/drivers/tty/vt/vc_screen.c
+++ b/drivers/tty/vt/vc_screen.c
@@ -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)