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-rw-r--r--drivers/char/agp/intel-gtt.c2
-rw-r--r--drivers/char/hw_random/core.c6
-rw-r--r--drivers/char/ipmi/ipmi_ssif.c2
-rw-r--r--drivers/char/ipmi/ipmi_watchdog.c8
-rw-r--r--drivers/char/random.c12
-rw-r--r--drivers/char/tpm/st33zp24/st33zp24.c4
-rw-r--r--drivers/char/tpm/tpm_i2c_infineon.c5
-rw-r--r--drivers/char/tpm/tpm_i2c_nuvoton.c8
-rw-r--r--drivers/char/tpm/tpm_tis.c5
-rw-r--r--drivers/char/virtio_console.c49
10 files changed, 59 insertions, 42 deletions
diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c
index c6dea3f6917b..b38e31221a7e 100644
--- a/drivers/char/agp/intel-gtt.c
+++ b/drivers/char/agp/intel-gtt.c
@@ -859,6 +859,8 @@ void intel_gtt_insert_sg_entries(struct sg_table *st,
}
}
wmb();
+ if (intel_private.driver->chipset_flush)
+ intel_private.driver->chipset_flush();
}
EXPORT_SYMBOL(intel_gtt_insert_sg_entries);
diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c
index 5643b65cee20..0ff7682cfb14 100644
--- a/drivers/char/hw_random/core.c
+++ b/drivers/char/hw_random/core.c
@@ -238,7 +238,10 @@ static ssize_t rng_dev_read(struct file *filp, char __user *buf,
goto out;
}
- mutex_lock(&reading_mutex);
+ if (mutex_lock_interruptible(&reading_mutex)) {
+ err = -ERESTARTSYS;
+ goto out_put;
+ }
if (!data_avail) {
bytes_read = rng_get_data(rng, rng_buffer,
rng_buffer_size(),
@@ -288,6 +291,7 @@ out:
out_unlock_reading:
mutex_unlock(&reading_mutex);
+out_put:
put_rng(rng);
goto out;
}
diff --git a/drivers/char/ipmi/ipmi_ssif.c b/drivers/char/ipmi/ipmi_ssif.c
index 9156bbd90b56..0166be52aacb 100644
--- a/drivers/char/ipmi/ipmi_ssif.c
+++ b/drivers/char/ipmi/ipmi_ssif.c
@@ -408,6 +408,7 @@ static void start_event_fetch(struct ssif_info *ssif_info, unsigned long *flags)
msg = ipmi_alloc_smi_msg();
if (!msg) {
ssif_info->ssif_state = SSIF_NORMAL;
+ ipmi_ssif_unlock_cond(ssif_info, flags);
return;
}
@@ -430,6 +431,7 @@ static void start_recv_msg_fetch(struct ssif_info *ssif_info,
msg = ipmi_alloc_smi_msg();
if (!msg) {
ssif_info->ssif_state = SSIF_NORMAL;
+ ipmi_ssif_unlock_cond(ssif_info, flags);
return;
}
diff --git a/drivers/char/ipmi/ipmi_watchdog.c b/drivers/char/ipmi/ipmi_watchdog.c
index f335fcee09af..0109d3fb5fbc 100644
--- a/drivers/char/ipmi/ipmi_watchdog.c
+++ b/drivers/char/ipmi/ipmi_watchdog.c
@@ -509,7 +509,7 @@ static void panic_halt_ipmi_heartbeat(void)
msg.cmd = IPMI_WDOG_RESET_TIMER;
msg.data = NULL;
msg.data_len = 0;
- atomic_add(2, &panic_done_count);
+ atomic_add(1, &panic_done_count);
rv = ipmi_request_supply_msgs(watchdog_user,
(struct ipmi_addr *) &addr,
0,
@@ -519,7 +519,7 @@ static void panic_halt_ipmi_heartbeat(void)
&panic_halt_heartbeat_recv_msg,
1);
if (rv)
- atomic_sub(2, &panic_done_count);
+ atomic_sub(1, &panic_done_count);
}
static struct ipmi_smi_msg panic_halt_smi_msg = {
@@ -543,12 +543,12 @@ static void panic_halt_ipmi_set_timeout(void)
/* Wait for the messages to be free. */
while (atomic_read(&panic_done_count) != 0)
ipmi_poll_interface(watchdog_user);
- atomic_add(2, &panic_done_count);
+ atomic_add(1, &panic_done_count);
rv = i_ipmi_set_timeout(&panic_halt_smi_msg,
&panic_halt_recv_msg,
&send_heartbeat_now);
if (rv) {
- atomic_sub(2, &panic_done_count);
+ atomic_sub(1, &panic_done_count);
printk(KERN_WARNING PFX
"Unable to extend the watchdog timeout.");
} else {
diff --git a/drivers/char/random.c b/drivers/char/random.c
index acb8e7c218d1..04c2a2b6e7d3 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -704,7 +704,7 @@ retry:
static void credit_entropy_bits_safe(struct entropy_store *r, int nbits)
{
- const int nbits_max = (int)(~0U >> (ENTROPY_SHIFT + 1));
+ const int nbits_max = r->poolinfo->poolwords * 32;
/* Cap the value to avoid overflows */
nbits = min(nbits, nbits_max);
@@ -860,12 +860,16 @@ static void add_interrupt_bench(cycles_t start)
static __u32 get_reg(struct fast_pool *f, struct pt_regs *regs)
{
__u32 *ptr = (__u32 *) regs;
+ unsigned int idx;
if (regs == NULL)
return 0;
- if (f->reg_idx >= sizeof(struct pt_regs) / sizeof(__u32))
- f->reg_idx = 0;
- return *(ptr + f->reg_idx++);
+ idx = READ_ONCE(f->reg_idx);
+ if (idx >= sizeof(struct pt_regs) / sizeof(__u32))
+ idx = 0;
+ ptr += idx++;
+ WRITE_ONCE(f->reg_idx, idx);
+ return *ptr;
}
void add_interrupt_randomness(int irq, int irq_flags, __u64 ip)
diff --git a/drivers/char/tpm/st33zp24/st33zp24.c b/drivers/char/tpm/st33zp24/st33zp24.c
index 8d626784cd8d..49e4040eeb55 100644
--- a/drivers/char/tpm/st33zp24/st33zp24.c
+++ b/drivers/char/tpm/st33zp24/st33zp24.c
@@ -485,7 +485,7 @@ static int st33zp24_recv(struct tpm_chip *chip, unsigned char *buf,
size_t count)
{
int size = 0;
- int expected;
+ u32 expected;
if (!chip)
return -EBUSY;
@@ -502,7 +502,7 @@ static int st33zp24_recv(struct tpm_chip *chip, unsigned char *buf,
}
expected = be32_to_cpu(*(__be32 *)(buf + 2));
- if (expected > count) {
+ if (expected > count || expected < TPM_HEADER_SIZE) {
size = -EIO;
goto out;
}
diff --git a/drivers/char/tpm/tpm_i2c_infineon.c b/drivers/char/tpm/tpm_i2c_infineon.c
index 33c5f360ab01..ff9ed941862a 100644
--- a/drivers/char/tpm/tpm_i2c_infineon.c
+++ b/drivers/char/tpm/tpm_i2c_infineon.c
@@ -436,7 +436,8 @@ static int recv_data(struct tpm_chip *chip, u8 *buf, size_t count)
static int tpm_tis_i2c_recv(struct tpm_chip *chip, u8 *buf, size_t count)
{
int size = 0;
- int expected, status;
+ int status;
+ u32 expected;
if (count < TPM_HEADER_SIZE) {
size = -EIO;
@@ -451,7 +452,7 @@ static int tpm_tis_i2c_recv(struct tpm_chip *chip, u8 *buf, size_t count)
}
expected = be32_to_cpu(*(__be32 *)(buf + 2));
- if ((size_t) expected > count) {
+ if (((size_t) expected > count) || (expected < TPM_HEADER_SIZE)) {
size = -EIO;
goto out;
}
diff --git a/drivers/char/tpm/tpm_i2c_nuvoton.c b/drivers/char/tpm/tpm_i2c_nuvoton.c
index eac6dc93589f..134cef873aeb 100644
--- a/drivers/char/tpm/tpm_i2c_nuvoton.c
+++ b/drivers/char/tpm/tpm_i2c_nuvoton.c
@@ -275,7 +275,11 @@ static int i2c_nuvoton_recv(struct tpm_chip *chip, u8 *buf, size_t count)
struct device *dev = chip->pdev;
struct i2c_client *client = to_i2c_client(dev);
s32 rc;
- int expected, status, burst_count, retries, size = 0;
+ int status;
+ int burst_count;
+ int retries;
+ int size = 0;
+ u32 expected;
if (count < TPM_HEADER_SIZE) {
i2c_nuvoton_ready(chip); /* return to idle */
@@ -317,7 +321,7 @@ static int i2c_nuvoton_recv(struct tpm_chip *chip, u8 *buf, size_t count)
* to machine native
*/
expected = be32_to_cpu(*(__be32 *) (buf + 2));
- if (expected > count) {
+ if (expected > count || expected < size) {
dev_err(dev, "%s() expected > count\n", __func__);
size = -EIO;
continue;
diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index 5809567d3cf0..d696e5c3d079 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -283,7 +283,8 @@ static int recv_data(struct tpm_chip *chip, u8 *buf, size_t count)
static int tpm_tis_recv(struct tpm_chip *chip, u8 *buf, size_t count)
{
int size = 0;
- int expected, status;
+ int status;
+ u32 expected;
if (count < TPM_HEADER_SIZE) {
size = -EIO;
@@ -298,7 +299,7 @@ static int tpm_tis_recv(struct tpm_chip *chip, u8 *buf, size_t count)
}
expected = be32_to_cpu(*(__be32 *) (buf + 2));
- if (expected > count) {
+ if (expected > count || expected < TPM_HEADER_SIZE) {
size = -EIO;
goto out;
}
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index 374b0006aa7a..a7adfc633db9 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -1399,7 +1399,6 @@ static int add_port(struct ports_device *portdev, u32 id)
{
char debugfs_name[16];
struct port *port;
- struct port_buffer *buf;
dev_t devt;
unsigned int nr_added_bufs;
int err;
@@ -1510,8 +1509,6 @@ static int add_port(struct ports_device *portdev, u32 id)
return 0;
free_inbufs:
- while ((buf = virtqueue_detach_unused_buf(port->in_vq)))
- free_buf(buf, true);
free_device:
device_destroy(pdrvdata.class, port->dev->devt);
free_cdev:
@@ -1536,34 +1533,14 @@ static void remove_port(struct kref *kref)
static void remove_port_data(struct port *port)
{
- struct port_buffer *buf;
-
spin_lock_irq(&port->inbuf_lock);
/* Remove unused data this port might have received. */
discard_port_data(port);
spin_unlock_irq(&port->inbuf_lock);
- /* Remove buffers we queued up for the Host to send us data in. */
- do {
- spin_lock_irq(&port->inbuf_lock);
- buf = virtqueue_detach_unused_buf(port->in_vq);
- spin_unlock_irq(&port->inbuf_lock);
- if (buf)
- free_buf(buf, true);
- } while (buf);
-
spin_lock_irq(&port->outvq_lock);
reclaim_consumed_buffers(port);
spin_unlock_irq(&port->outvq_lock);
-
- /* Free pending buffers from the out-queue. */
- do {
- spin_lock_irq(&port->outvq_lock);
- buf = virtqueue_detach_unused_buf(port->out_vq);
- spin_unlock_irq(&port->outvq_lock);
- if (buf)
- free_buf(buf, true);
- } while (buf);
}
/*
@@ -1788,13 +1765,24 @@ static void control_work_handler(struct work_struct *work)
spin_unlock(&portdev->c_ivq_lock);
}
+static void flush_bufs(struct virtqueue *vq, bool can_sleep)
+{
+ struct port_buffer *buf;
+ unsigned int len;
+
+ while ((buf = virtqueue_get_buf(vq, &len)))
+ free_buf(buf, can_sleep);
+}
+
static void out_intr(struct virtqueue *vq)
{
struct port *port;
port = find_port_by_vq(vq->vdev->priv, vq);
- if (!port)
+ if (!port) {
+ flush_bufs(vq, false);
return;
+ }
wake_up_interruptible(&port->waitqueue);
}
@@ -1805,8 +1793,10 @@ static void in_intr(struct virtqueue *vq)
unsigned long flags;
port = find_port_by_vq(vq->vdev->priv, vq);
- if (!port)
+ if (!port) {
+ flush_bufs(vq, false);
return;
+ }
spin_lock_irqsave(&port->inbuf_lock, flags);
port->inbuf = get_inbuf(port);
@@ -1981,6 +1971,15 @@ static const struct file_operations portdev_fops = {
static void remove_vqs(struct ports_device *portdev)
{
+ struct virtqueue *vq;
+
+ virtio_device_for_each_vq(portdev->vdev, vq) {
+ struct port_buffer *buf;
+
+ flush_bufs(vq, true);
+ while ((buf = virtqueue_detach_unused_buf(vq)))
+ free_buf(buf, true);
+ }
portdev->vdev->config->del_vqs(portdev->vdev);
kfree(portdev->in_vqs);
kfree(portdev->out_vqs);
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-07-02 01:32:56 +0000