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-rw-r--r--drivers/virtio/virtio.c2
-rw-r--r--include/linux/virtio_config.h13
2 files changed, 15 insertions, 0 deletions
diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c
index 59e36ef4920f..98b30f54342c 100644
--- a/drivers/virtio/virtio.c
+++ b/drivers/virtio/virtio.c
@@ -161,6 +161,7 @@ EXPORT_SYMBOL_GPL(virtio_config_enable);
void virtio_add_status(struct virtio_device *dev, unsigned int status)
{
+ might_sleep();
dev->config->set_status(dev, dev->config->get_status(dev) | status);
}
EXPORT_SYMBOL_GPL(virtio_add_status);
@@ -170,6 +171,7 @@ int virtio_finalize_features(struct virtio_device *dev)
int ret = dev->config->finalize_features(dev);
unsigned status;
+ might_sleep();
if (ret)
return ret;
diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h
index 987b6491b946..bb4cc4910750 100644
--- a/include/linux/virtio_config.h
+++ b/include/linux/virtio_config.h
@@ -290,6 +290,7 @@ static inline __virtio64 cpu_to_virtio64(struct virtio_device *vdev, u64 val)
/* Config space accessors. */
#define virtio_cread(vdev, structname, member, ptr) \
do { \
+ might_sleep(); \
/* Must match the member's type, and be integer */ \
if (!typecheck(typeof((((structname*)0)->member)), *(ptr))) \
(*ptr) = 1; \
@@ -319,6 +320,7 @@ static inline __virtio64 cpu_to_virtio64(struct virtio_device *vdev, u64 val)
/* Config space accessors. */
#define virtio_cwrite(vdev, structname, member, ptr) \
do { \
+ might_sleep(); \
/* Must match the member's type, and be integer */ \
if (!typecheck(typeof((((structname*)0)->member)), *(ptr))) \
BUG_ON((*ptr) == 1); \
@@ -358,6 +360,7 @@ static inline void __virtio_cread_many(struct virtio_device *vdev,
vdev->config->generation(vdev) : 0;
int i;
+ might_sleep();
do {
old = gen;
@@ -380,6 +383,8 @@ static inline void virtio_cread_bytes(struct virtio_device *vdev,
static inline u8 virtio_cread8(struct virtio_device *vdev, unsigned int offset)
{
u8 ret;
+
+ might_sleep();
vdev->config->get(vdev, offset, &ret, sizeof(ret));
return ret;
}
@@ -387,6 +392,7 @@ static inline u8 virtio_cread8(struct virtio_device *vdev, unsigned int offset)
static inline void virtio_cwrite8(struct virtio_device *vdev,
unsigned int offset, u8 val)
{
+ might_sleep();
vdev->config->set(vdev, offset, &val, sizeof(val));
}
@@ -394,6 +400,8 @@ static inline u16 virtio_cread16(struct virtio_device *vdev,
unsigned int offset)
{
u16 ret;
+
+ might_sleep();
vdev->config->get(vdev, offset, &ret, sizeof(ret));
return virtio16_to_cpu(vdev, (__force __virtio16)ret);
}
@@ -401,6 +409,7 @@ static inline u16 virtio_cread16(struct virtio_device *vdev,
static inline void virtio_cwrite16(struct virtio_device *vdev,
unsigned int offset, u16 val)
{
+ might_sleep();
val = (__force u16)cpu_to_virtio16(vdev, val);
vdev->config->set(vdev, offset, &val, sizeof(val));
}
@@ -409,6 +418,8 @@ static inline u32 virtio_cread32(struct virtio_device *vdev,
unsigned int offset)
{
u32 ret;
+
+ might_sleep();
vdev->config->get(vdev, offset, &ret, sizeof(ret));
return virtio32_to_cpu(vdev, (__force __virtio32)ret);
}
@@ -416,6 +427,7 @@ static inline u32 virtio_cread32(struct virtio_device *vdev,
static inline void virtio_cwrite32(struct virtio_device *vdev,
unsigned int offset, u32 val)
{
+ might_sleep();
val = (__force u32)cpu_to_virtio32(vdev, val);
vdev->config->set(vdev, offset, &val, sizeof(val));
}
@@ -431,6 +443,7 @@ static inline u64 virtio_cread64(struct virtio_device *vdev,
static inline void virtio_cwrite64(struct virtio_device *vdev,
unsigned int offset, u64 val)
{
+ might_sleep();
val = (__force u64)cpu_to_virtio64(vdev, val);
vdev->config->set(vdev, offset, &val, sizeof(val));
}