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-rw-r--r--drivers/char/Kconfig24
-rw-r--r--drivers/char/Makefile1
-rw-r--r--drivers/char/agp/backend.c4
-rw-r--r--drivers/char/agp/intel-agp.c54
-rw-r--r--drivers/char/hvc_xen.c25
-rw-r--r--drivers/char/hw_random/fsl-rngc.c48
-rw-r--r--drivers/char/keyboard.c2
-rw-r--r--drivers/char/nozomi.c2
-rw-r--r--drivers/char/pty.c6
-rw-r--r--drivers/char/tpm/tpm.c8
-rw-r--r--drivers/char/tpm/tpm_tis.c12
-rw-r--r--drivers/char/tty_buffer.c29
-rw-r--r--drivers/char/tty_io.c3
-rw-r--r--drivers/char/tty_ldisc.c7
-rw-r--r--drivers/char/tty_port.c39
-rw-r--r--drivers/char/vt.c3
16 files changed, 138 insertions, 129 deletions
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 49f086977c37..00ebf36b0059 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -323,7 +323,7 @@ config SPECIALIX
config SX
tristate "Specialix SX (and SI) card support"
- depends on SERIAL_NONSTANDARD && (PCI || EISA || ISA)
+ depends on SERIAL_NONSTANDARD && (PCI || EISA || ISA) && BROKEN
help
This is a driver for the SX and SI multiport serial cards.
Please read the file <file:Documentation/serial/sx.txt> for details.
@@ -334,7 +334,7 @@ config SX
config RIO
tristate "Specialix RIO system support"
- depends on SERIAL_NONSTANDARD
+ depends on SERIAL_NONSTANDARD && BROKEN
help
This is a driver for the Specialix RIO, a smart serial card which
drives an outboard box that can support up to 128 ports. Product
@@ -395,7 +395,7 @@ config NOZOMI
config A2232
tristate "Commodore A2232 serial support (EXPERIMENTAL)"
- depends on EXPERIMENTAL && ZORRO && BROKEN_ON_SMP
+ depends on EXPERIMENTAL && ZORRO && BROKEN
---help---
This option supports the 2232 7-port serial card shipped with the
Amiga 2000 and other Zorro-bus machines, dating from 1989. At
@@ -444,7 +444,7 @@ config MXC_IIM
config MXS_VIIM
tristate "MXS Virtual IIM device driver"
- depends on (ARCH_STMP3XXX || ARCH_MXS || ARCH_MX5)
+ depends on (ARCH_STMP3XXX || ARCH_MXS)
help
Support for access to MXS Virtual IIM device, most people should say N here.
@@ -564,22 +564,6 @@ config BFIN_OTP_WRITE_ENABLE
If unsure, say N.
-config FSL_OTP
- tristate "Freescale On-Chip OTP Memory Support"
- depends on (ARCH_MX23 || ARCH_MX28 || ARCH_MX50)
- default n
- help
- If you say Y here, you will get support for a character device
- interface into the One Time Programmable memory pages that are
- stored on the iMX23/28/50 processor. This will not get you access
- to the secure memory pages however. You will need to write your
- own secure code and reader for that.
-
- To compile this driver as a module, choose M here: the module
- will be called fsl_otp.
-
- If unsure, it is safe to say Y.
-
config PRINTER
tristate "Parallel printer support"
depends on PARPORT
diff --git a/drivers/char/Makefile b/drivers/char/Makefile
index 898ce27e335d..c711f02de8f7 100644
--- a/drivers/char/Makefile
+++ b/drivers/char/Makefile
@@ -69,7 +69,6 @@ obj-$(CONFIG_IBM_BSR) += bsr.o
obj-$(CONFIG_SGI_MBCS) += mbcs.o
obj-$(CONFIG_BRIQ_PANEL) += briq_panel.o
obj-$(CONFIG_BFIN_OTP) += bfin-otp.o
-obj-$(CONFIG_FSL_OTP) += fsl_otp.o
obj-$(CONFIG_PRINTER) += lp.o
diff --git a/drivers/char/agp/backend.c b/drivers/char/agp/backend.c
index cfa5a649dfe7..19ce9d6c69f1 100644
--- a/drivers/char/agp/backend.c
+++ b/drivers/char/agp/backend.c
@@ -114,9 +114,9 @@ static int agp_find_max(void)
long memory, index, result;
#if PAGE_SHIFT < 20
- memory = num_physpages >> (20 - PAGE_SHIFT);
+ memory = totalram_pages >> (20 - PAGE_SHIFT);
#else
- memory = num_physpages << (PAGE_SHIFT - 20);
+ memory = totalram_pages << (PAGE_SHIFT - 20);
#endif
index = 1;
diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c
index c58557790585..62711ddeb53a 100644
--- a/drivers/char/agp/intel-agp.c
+++ b/drivers/char/agp/intel-agp.c
@@ -36,6 +36,8 @@
#define PCI_DEVICE_ID_INTEL_Q35_IG 0x29B2
#define PCI_DEVICE_ID_INTEL_Q33_HB 0x29D0
#define PCI_DEVICE_ID_INTEL_Q33_IG 0x29D2
+#define PCI_DEVICE_ID_INTEL_B43_HB 0x2E40
+#define PCI_DEVICE_ID_INTEL_B43_IG 0x2E42
#define PCI_DEVICE_ID_INTEL_GM45_HB 0x2A40
#define PCI_DEVICE_ID_INTEL_GM45_IG 0x2A42
#define PCI_DEVICE_ID_INTEL_IGD_E_HB 0x2E00
@@ -50,6 +52,7 @@
#define PCI_DEVICE_ID_INTEL_IGDNG_D_IG 0x0042
#define PCI_DEVICE_ID_INTEL_IGDNG_M_HB 0x0044
#define PCI_DEVICE_ID_INTEL_IGDNG_MA_HB 0x0062
+#define PCI_DEVICE_ID_INTEL_IGDNG_MC2_HB 0x006a
#define PCI_DEVICE_ID_INTEL_IGDNG_M_IG 0x0046
/* cover 915 and 945 variants */
@@ -81,9 +84,11 @@
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_G45_HB || \
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_GM45_HB || \
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_G41_HB || \
+ agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_B43_HB || \
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IGDNG_D_HB || \
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IGDNG_M_HB || \
- agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IGDNG_MA_HB)
+ agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IGDNG_MA_HB || \
+ agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IGDNG_MC2_HB)
extern int agp_memory_reserved;
@@ -679,23 +684,39 @@ static void intel_i830_setup_flush(void)
if (!intel_private.i8xx_page)
return;
- /* make page uncached */
- map_page_into_agp(intel_private.i8xx_page);
-
intel_private.i8xx_flush_page = kmap(intel_private.i8xx_page);
if (!intel_private.i8xx_flush_page)
intel_i830_fini_flush();
}
+static void
+do_wbinvd(void *null)
+{
+ wbinvd();
+}
+
+/* The chipset_flush interface needs to get data that has already been
+ * flushed out of the CPU all the way out to main memory, because the GPU
+ * doesn't snoop those buffers.
+ *
+ * The 8xx series doesn't have the same lovely interface for flushing the
+ * chipset write buffers that the later chips do. According to the 865
+ * specs, it's 64 octwords, or 1KB. So, to get those previous things in
+ * that buffer out, we just fill 1KB and clflush it out, on the assumption
+ * that it'll push whatever was in there out. It appears to work.
+ */
static void intel_i830_chipset_flush(struct agp_bridge_data *bridge)
{
unsigned int *pg = intel_private.i8xx_flush_page;
- int i;
- for (i = 0; i < 256; i += 2)
- *(pg + i) = i;
+ memset(pg, 0, 1024);
- wmb();
+ if (cpu_has_clflush) {
+ clflush_cache_range(pg, 1024);
+ } else {
+ if (on_each_cpu(do_wbinvd, NULL, 1) != 0)
+ printk(KERN_ERR "Timed out waiting for cache flush.\n");
+ }
}
/* The intel i830 automatically initializes the agp aperture during POST.
@@ -1216,9 +1237,11 @@ static void intel_i965_get_gtt_range(int *gtt_offset, int *gtt_size)
case PCI_DEVICE_ID_INTEL_Q45_HB:
case PCI_DEVICE_ID_INTEL_G45_HB:
case PCI_DEVICE_ID_INTEL_G41_HB:
+ case PCI_DEVICE_ID_INTEL_B43_HB:
case PCI_DEVICE_ID_INTEL_IGDNG_D_HB:
case PCI_DEVICE_ID_INTEL_IGDNG_M_HB:
case PCI_DEVICE_ID_INTEL_IGDNG_MA_HB:
+ case PCI_DEVICE_ID_INTEL_IGDNG_MC2_HB:
*gtt_offset = *gtt_size = MB(2);
break;
default:
@@ -2192,6 +2215,8 @@ static const struct intel_driver_description {
"Q45/Q43", NULL, &intel_i965_driver },
{ PCI_DEVICE_ID_INTEL_G45_HB, PCI_DEVICE_ID_INTEL_G45_IG, 0,
"G45/G43", NULL, &intel_i965_driver },
+ { PCI_DEVICE_ID_INTEL_B43_HB, PCI_DEVICE_ID_INTEL_B43_IG, 0,
+ "B43", NULL, &intel_i965_driver },
{ PCI_DEVICE_ID_INTEL_G41_HB, PCI_DEVICE_ID_INTEL_G41_IG, 0,
"G41", NULL, &intel_i965_driver },
{ PCI_DEVICE_ID_INTEL_IGDNG_D_HB, PCI_DEVICE_ID_INTEL_IGDNG_D_IG, 0,
@@ -2200,6 +2225,8 @@ static const struct intel_driver_description {
"IGDNG/M", NULL, &intel_i965_driver },
{ PCI_DEVICE_ID_INTEL_IGDNG_MA_HB, PCI_DEVICE_ID_INTEL_IGDNG_M_IG, 0,
"IGDNG/MA", NULL, &intel_i965_driver },
+ { PCI_DEVICE_ID_INTEL_IGDNG_MC2_HB, PCI_DEVICE_ID_INTEL_IGDNG_M_IG, 0,
+ "IGDNG/MC2", NULL, &intel_i965_driver },
{ 0, 0, 0, NULL, NULL, NULL }
};
@@ -2313,15 +2340,6 @@ static int agp_intel_resume(struct pci_dev *pdev)
struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
int ret_val;
- pci_restore_state(pdev);
-
- /* We should restore our graphics device's config space,
- * as host bridge (00:00) resumes before graphics device (02:00),
- * then our access to its pci space can work right.
- */
- if (intel_private.pcidev)
- pci_restore_state(intel_private.pcidev);
-
if (bridge->driver == &intel_generic_driver)
intel_configure();
else if (bridge->driver == &intel_850_driver)
@@ -2401,9 +2419,11 @@ static struct pci_device_id agp_intel_pci_table[] = {
ID(PCI_DEVICE_ID_INTEL_Q45_HB),
ID(PCI_DEVICE_ID_INTEL_G45_HB),
ID(PCI_DEVICE_ID_INTEL_G41_HB),
+ ID(PCI_DEVICE_ID_INTEL_B43_HB),
ID(PCI_DEVICE_ID_INTEL_IGDNG_D_HB),
ID(PCI_DEVICE_ID_INTEL_IGDNG_M_HB),
ID(PCI_DEVICE_ID_INTEL_IGDNG_MA_HB),
+ ID(PCI_DEVICE_ID_INTEL_IGDNG_MC2_HB),
{ }
};
diff --git a/drivers/char/hvc_xen.c b/drivers/char/hvc_xen.c
index eba999f8598d..ae453cc25a66 100644
--- a/drivers/char/hvc_xen.c
+++ b/drivers/char/hvc_xen.c
@@ -55,7 +55,7 @@ static inline void notify_daemon(void)
notify_remote_via_evtchn(xen_start_info->console.domU.evtchn);
}
-static int write_console(uint32_t vtermno, const char *data, int len)
+static int __write_console(const char *data, int len)
{
struct xencons_interface *intf = xencons_interface();
XENCONS_RING_IDX cons, prod;
@@ -76,6 +76,29 @@ static int write_console(uint32_t vtermno, const char *data, int len)
return sent;
}
+static int write_console(uint32_t vtermno, const char *data, int len)
+{
+ int ret = len;
+
+ /*
+ * Make sure the whole buffer is emitted, polling if
+ * necessary. We don't ever want to rely on the hvc daemon
+ * because the most interesting console output is when the
+ * kernel is crippled.
+ */
+ while (len) {
+ int sent = __write_console(data, len);
+
+ data += sent;
+ len -= sent;
+
+ if (unlikely(len))
+ HYPERVISOR_sched_op(SCHEDOP_yield, NULL);
+ }
+
+ return ret;
+}
+
static int read_console(uint32_t vtermno, char *buf, int len)
{
struct xencons_interface *intf = xencons_interface();
diff --git a/drivers/char/hw_random/fsl-rngc.c b/drivers/char/hw_random/fsl-rngc.c
index 9e788f97c4d8..9bf78e846fa0 100644
--- a/drivers/char/hw_random/fsl-rngc.c
+++ b/drivers/char/hw_random/fsl-rngc.c
@@ -1,7 +1,7 @@
/*
* RNG driver for Freescale RNGC
*
- * Copyright (C) 2008-2010 Freescale Semiconductor, Inc.
+ * Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved.
*/
/*
@@ -42,6 +42,7 @@
#include <linux/interrupt.h>
#include <linux/hw_random.h>
#include <linux/io.h>
+#include <asm/hardware.h>
#define RNGC_VERSION_MAJOR3 3
@@ -291,7 +292,7 @@ static int __init fsl_rngc_probe(struct platform_device *pdev)
if (rng_dev)
return -EBUSY;
- clk = clk_get(&pdev->dev, "rng_clk");
+ clk = clk_get(NULL, "rng_clk");
if (IS_ERR(clk)) {
dev_err(&pdev->dev, "Can not get rng_clk\n");
@@ -333,17 +334,9 @@ static int __init fsl_rngc_probe(struct platform_device *pdev)
static int __exit fsl_rngc_remove(struct platform_device *pdev)
{
- struct clk *clk;
struct resource *mem = dev_get_drvdata(&pdev->dev);
void __iomem *rngc_base = (void __iomem *)fsl_rngc.priv;
- clk = clk_get(&pdev->dev, "rng_clk");
-
- if (IS_ERR(clk))
- dev_err(&pdev->dev, "Can not get rng_clk\n");
- else
- clk_disable(clk);
-
hwrng_unregister(&fsl_rngc);
release_resource(mem);
@@ -353,47 +346,12 @@ static int __exit fsl_rngc_remove(struct platform_device *pdev)
return 0;
}
-static int fsl_rngc_suspend(struct platform_device *pdev,
- pm_message_t state)
-{
-#ifdef CONFIG_PM
- struct clk *clk = clk_get(&pdev->dev, "rng_clk");
-
- if (IS_ERR(clk)) {
- dev_err(&pdev->dev, "Can not get rng_clk\n");
- return PTR_ERR(clk);
- }
-
- clk_disable(clk);
-#endif
-
- return 0;
-}
-
-static int fsl_rngc_resume(struct platform_device *pdev)
-{
-#ifdef CONFIG_PM
- struct clk *clk = clk_get(&pdev->dev, "rng_clk");
-
- if (IS_ERR(clk)) {
- dev_err(&pdev->dev, "Can not get rng_clk\n");
- return PTR_ERR(clk);
- }
-
- clk_enable(clk);
-#endif
-
- return 0;
-}
-
static struct platform_driver fsl_rngc_driver = {
.driver = {
.name = "fsl_rngc",
.owner = THIS_MODULE,
},
.remove = __exit_p(fsl_rngc_remove),
- .suspend = fsl_rngc_suspend,
- .resume = fsl_rngc_resume,
};
static int __init mod_init(void)
diff --git a/drivers/char/keyboard.c b/drivers/char/keyboard.c
index 737be953cc58..950837cf9e9c 100644
--- a/drivers/char/keyboard.c
+++ b/drivers/char/keyboard.c
@@ -1249,7 +1249,7 @@ static void kbd_keycode(unsigned int keycode, int down, int hw_raw)
if (keycode >= NR_KEYS)
if (keycode >= KEY_BRL_DOT1 && keycode <= KEY_BRL_DOT8)
- keysym = K(KT_BRL, keycode - KEY_BRL_DOT1 + 1);
+ keysym = U(K(KT_BRL, keycode - KEY_BRL_DOT1 + 1));
else
return;
else
diff --git a/drivers/char/nozomi.c b/drivers/char/nozomi.c
index ec58d8c387ff..2171e9dac1ab 100644
--- a/drivers/char/nozomi.c
+++ b/drivers/char/nozomi.c
@@ -1628,10 +1628,10 @@ static void ntty_close(struct tty_struct *tty, struct file *file)
dc->open_ttys--;
port->count--;
- tty_port_tty_set(port, NULL);
if (port->count == 0) {
DBG1("close: %d", nport->token_dl);
+ tty_port_tty_set(port, NULL);
spin_lock_irqsave(&dc->spin_mutex, flags);
dc->last_ier &= ~(nport->token_dl);
writew(dc->last_ier, dc->reg_ier);
diff --git a/drivers/char/pty.c b/drivers/char/pty.c
index b33d6688e910..53761cefa915 100644
--- a/drivers/char/pty.c
+++ b/drivers/char/pty.c
@@ -120,8 +120,10 @@ static int pty_write(struct tty_struct *tty, const unsigned char *buf, int c)
/* Stuff the data into the input queue of the other end */
c = tty_insert_flip_string(to, buf, c);
/* And shovel */
- tty_flip_buffer_push(to);
- tty_wakeup(tty);
+ if (c) {
+ tty_flip_buffer_push(to);
+ tty_wakeup(tty);
+ }
}
return c;
}
diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c
index b0603b2e5684..47c2d2763456 100644
--- a/drivers/char/tpm/tpm.c
+++ b/drivers/char/tpm/tpm.c
@@ -696,8 +696,7 @@ int __tpm_pcr_read(struct tpm_chip *chip, int pcr_idx, u8 *res_buf)
cmd.header.in = pcrread_header;
cmd.params.pcrread_in.pcr_idx = cpu_to_be32(pcr_idx);
- BUILD_BUG_ON(cmd.header.in.length > READ_PCR_RESULT_SIZE);
- rc = transmit_cmd(chip, &cmd, cmd.header.in.length,
+ rc = transmit_cmd(chip, &cmd, READ_PCR_RESULT_SIZE,
"attempting to read a pcr value");
if (rc == 0)
@@ -742,7 +741,7 @@ EXPORT_SYMBOL_GPL(tpm_pcr_read);
* the module usage count.
*/
#define TPM_ORD_PCR_EXTEND cpu_to_be32(20)
-#define EXTEND_PCR_SIZE 34
+#define EXTEND_PCR_RESULT_SIZE 34
static struct tpm_input_header pcrextend_header = {
.tag = TPM_TAG_RQU_COMMAND,
.length = cpu_to_be32(34),
@@ -760,10 +759,9 @@ int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash)
return -ENODEV;
cmd.header.in = pcrextend_header;
- BUILD_BUG_ON(be32_to_cpu(cmd.header.in.length) > EXTEND_PCR_SIZE);
cmd.params.pcrextend_in.pcr_idx = cpu_to_be32(pcr_idx);
memcpy(cmd.params.pcrextend_in.hash, hash, TPM_DIGEST_SIZE);
- rc = transmit_cmd(chip, &cmd, cmd.header.in.length,
+ rc = transmit_cmd(chip, &cmd, EXTEND_PCR_RESULT_SIZE,
"attempting extend a PCR value");
module_put(chip->dev->driver->owner);
diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index aec1931608aa..0b73e4ec1add 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -450,6 +450,12 @@ static int tpm_tis_init(struct device *dev, resource_size_t start,
goto out_err;
}
+ /* Default timeouts */
+ chip->vendor.timeout_a = msecs_to_jiffies(TIS_SHORT_TIMEOUT);
+ chip->vendor.timeout_b = msecs_to_jiffies(TIS_LONG_TIMEOUT);
+ chip->vendor.timeout_c = msecs_to_jiffies(TIS_SHORT_TIMEOUT);
+ chip->vendor.timeout_d = msecs_to_jiffies(TIS_SHORT_TIMEOUT);
+
if (request_locality(chip, 0) != 0) {
rc = -ENODEV;
goto out_err;
@@ -457,12 +463,6 @@ static int tpm_tis_init(struct device *dev, resource_size_t start,
vendor = ioread32(chip->vendor.iobase + TPM_DID_VID(0));
- /* Default timeouts */
- chip->vendor.timeout_a = msecs_to_jiffies(TIS_SHORT_TIMEOUT);
- chip->vendor.timeout_b = msecs_to_jiffies(TIS_LONG_TIMEOUT);
- chip->vendor.timeout_c = msecs_to_jiffies(TIS_SHORT_TIMEOUT);
- chip->vendor.timeout_d = msecs_to_jiffies(TIS_SHORT_TIMEOUT);
-
dev_info(dev,
"1.2 TPM (device-id 0x%X, rev-id %d)\n",
vendor >> 16, ioread8(chip->vendor.iobase + TPM_RID(0)));
diff --git a/drivers/char/tty_buffer.c b/drivers/char/tty_buffer.c
index 3108991c5c8b..0296612cc7df 100644
--- a/drivers/char/tty_buffer.c
+++ b/drivers/char/tty_buffer.c
@@ -402,28 +402,26 @@ static void flush_to_ldisc(struct work_struct *work)
container_of(work, struct tty_struct, buf.work.work);
unsigned long flags;
struct tty_ldisc *disc;
- struct tty_buffer *tbuf, *head;
- char *char_buf;
- unsigned char *flag_buf;
disc = tty_ldisc_ref(tty);
if (disc == NULL) /* !TTY_LDISC */
return;
spin_lock_irqsave(&tty->buf.lock, flags);
- /* So we know a flush is running */
- set_bit(TTY_FLUSHING, &tty->flags);
- head = tty->buf.head;
- if (head != NULL) {
- tty->buf.head = NULL;
- for (;;) {
- int count = head->commit - head->read;
+
+ if (!test_and_set_bit(TTY_FLUSHING, &tty->flags)) {
+ struct tty_buffer *head;
+ while ((head = tty->buf.head) != NULL) {
+ int count;
+ char *char_buf;
+ unsigned char *flag_buf;
+
+ count = head->commit - head->read;
if (!count) {
if (head->next == NULL)
break;
- tbuf = head;
- head = head->next;
- tty_buffer_free(tty, tbuf);
+ tty->buf.head = head->next;
+ tty_buffer_free(tty, head);
continue;
}
/* Ldisc or user is trying to flush the buffers
@@ -445,9 +443,9 @@ static void flush_to_ldisc(struct work_struct *work)
flag_buf, count);
spin_lock_irqsave(&tty->buf.lock, flags);
}
- /* Restore the queue head */
- tty->buf.head = head;
+ clear_bit(TTY_FLUSHING, &tty->flags);
}
+
/* We may have a deferred request to flush the input buffer,
if so pull the chain under the lock and empty the queue */
if (test_bit(TTY_FLUSHPENDING, &tty->flags)) {
@@ -455,7 +453,6 @@ static void flush_to_ldisc(struct work_struct *work)
clear_bit(TTY_FLUSHPENDING, &tty->flags);
wake_up(&tty->read_wait);
}
- clear_bit(TTY_FLUSHING, &tty->flags);
spin_unlock_irqrestore(&tty->buf.lock, flags);
tty_ldisc_deref(disc);
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index a3afa0c387cd..9531cf8b3482 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -1184,6 +1184,7 @@ int tty_init_termios(struct tty_struct *tty)
tty->termios->c_ospeed = tty_termios_baud_rate(tty->termios);
return 0;
}
+EXPORT_SYMBOL_GPL(tty_init_termios);
/**
* tty_driver_install_tty() - install a tty entry in the driver
@@ -1911,8 +1912,10 @@ static int tty_fasync(int fd, struct file *filp, int on)
pid = task_pid(current);
type = PIDTYPE_PID;
}
+ get_pid(pid);
spin_unlock_irqrestore(&tty->ctrl_lock, flags);
retval = __f_setown(filp, pid, type, 0);
+ put_pid(pid);
if (retval)
goto out;
} else {
diff --git a/drivers/char/tty_ldisc.c b/drivers/char/tty_ldisc.c
index e48af9f79219..414372a442d9 100644
--- a/drivers/char/tty_ldisc.c
+++ b/drivers/char/tty_ldisc.c
@@ -516,7 +516,7 @@ static void tty_ldisc_restore(struct tty_struct *tty, struct tty_ldisc *old)
static int tty_ldisc_halt(struct tty_struct *tty)
{
clear_bit(TTY_LDISC, &tty->flags);
- return cancel_delayed_work(&tty->buf.work);
+ return cancel_delayed_work_sync(&tty->buf.work);
}
/**
@@ -754,12 +754,9 @@ void tty_ldisc_hangup(struct tty_struct *tty)
* N_TTY.
*/
if (tty->driver->flags & TTY_DRIVER_RESET_TERMIOS) {
- /* Make sure the old ldisc is quiescent */
- tty_ldisc_halt(tty);
- flush_scheduled_work();
-
/* Avoid racing set_ldisc or tty_ldisc_release */
mutex_lock(&tty->ldisc_mutex);
+ tty_ldisc_halt(tty);
if (tty->ldisc) { /* Not yet closed */
/* Switch back to N_TTY */
tty_ldisc_reinit(tty);
diff --git a/drivers/char/tty_port.c b/drivers/char/tty_port.c
index 9769b1149f76..c0ff7eeafbb2 100644
--- a/drivers/char/tty_port.c
+++ b/drivers/char/tty_port.c
@@ -96,6 +96,14 @@ void tty_port_tty_set(struct tty_port *port, struct tty_struct *tty)
}
EXPORT_SYMBOL(tty_port_tty_set);
+static void tty_port_shutdown(struct tty_port *port)
+{
+ if (port->ops->shutdown &&
+ test_and_clear_bit(ASYNCB_INITIALIZED, &port->flags))
+ port->ops->shutdown(port);
+
+}
+
/**
* tty_port_hangup - hangup helper
* @port: tty port
@@ -116,6 +124,7 @@ void tty_port_hangup(struct tty_port *port)
port->tty = NULL;
spin_unlock_irqrestore(&port->lock, flags);
wake_up_interruptible(&port->open_wait);
+ tty_port_shutdown(port);
}
EXPORT_SYMBOL(tty_port_hangup);
@@ -208,8 +217,14 @@ int tty_port_block_til_ready(struct tty_port *port,
/* if non-blocking mode is set we can pass directly to open unless
the port has just hung up or is in another error state */
- if ((filp->f_flags & O_NONBLOCK) ||
- (tty->flags & (1 << TTY_IO_ERROR))) {
+ if (tty->flags & (1 << TTY_IO_ERROR)) {
+ port->flags |= ASYNC_NORMAL_ACTIVE;
+ return 0;
+ }
+ if (filp->f_flags & O_NONBLOCK) {
+ /* Indicate we are open */
+ if (tty->termios->c_cflag & CBAUD)
+ tty_port_raise_dtr_rts(port);
port->flags |= ASYNC_NORMAL_ACTIVE;
return 0;
}
@@ -296,15 +311,17 @@ int tty_port_close_start(struct tty_port *port, struct tty_struct *tty, struct f
if (port->count) {
spin_unlock_irqrestore(&port->lock, flags);
+ if (port->ops->drop)
+ port->ops->drop(port);
return 0;
}
- port->flags |= ASYNC_CLOSING;
+ set_bit(ASYNCB_CLOSING, &port->flags);
tty->closing = 1;
spin_unlock_irqrestore(&port->lock, flags);
/* Don't block on a stalled port, just pull the chain */
if (tty->flow_stopped)
tty_driver_flush_buffer(tty);
- if (port->flags & ASYNC_INITIALIZED &&
+ if (test_bit(ASYNCB_INITIALIZED, &port->flags) &&
port->closing_wait != ASYNC_CLOSING_WAIT_NONE)
tty_wait_until_sent(tty, port->closing_wait);
if (port->drain_delay) {
@@ -318,6 +335,9 @@ int tty_port_close_start(struct tty_port *port, struct tty_struct *tty, struct f
timeout = 2 * HZ;
schedule_timeout_interruptible(timeout);
}
+ /* Don't call port->drop for the last reference. Callers will want
+ to drop the last active reference in ->shutdown() or the tty
+ shutdown path */
return 1;
}
EXPORT_SYMBOL(tty_port_close_start);
@@ -348,3 +368,14 @@ void tty_port_close_end(struct tty_port *port, struct tty_struct *tty)
spin_unlock_irqrestore(&port->lock, flags);
}
EXPORT_SYMBOL(tty_port_close_end);
+
+void tty_port_close(struct tty_port *port, struct tty_struct *tty,
+ struct file *filp)
+{
+ if (tty_port_close_start(port, tty, filp) == 0)
+ return;
+ tty_port_shutdown(port);
+ tty_port_close_end(port, tty);
+ tty_port_tty_set(port, NULL);
+}
+EXPORT_SYMBOL(tty_port_close);
diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index 404f4c1ee431..6aa88f50b039 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -2948,9 +2948,6 @@ int __init vty_init(const struct file_operations *console_fops)
panic("Couldn't register console driver\n");
kbd_init();
console_map_init();
-#ifdef CONFIG_PROM_CONSOLE
- prom_con_init();
-#endif
#ifdef CONFIG_MDA_CONSOLE
mda_console_init();
#endif
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-10 04:03:02 +0000