[PATCH 08/38] Staging: sst: add some __user anotations
Greg Kroah-Hartman
gregkh at suse.de
Fri Nov 12 21:41:16 UTC 2010
From: Dan Carpenter <error27 at gmail.com>
This silences all the sparse warnings in intel_sst_app_interface.c.
It was just a matter of adding __user annotations, I didn't find any
real bugs here. Quite a few of these were needed for stuff I added
earlier, sorry about that.
I removed a couple casts to (void *) that caused a warning like:
drivers/staging/intel_sst/intel_sst_app_interface.c:606:27:
warning: cast removes address space of expression
For example sst_drv_ctx->mailbox is already declared as
"void __iomem *mailbox" so casting it to void pointer isn't necessary
and it makes sparse complain because it removes the __user attribute.
Signed-off-by: Dan Carpenter <error27 at gmail.com>
Cc: Vinod Koul <vinod.koul at intel.com>
Cc: Alan Cox <alan at linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh at suse.de>
---
.../staging/intel_sst/intel_sst_app_interface.c | 36 +++++++++-----------
drivers/staging/intel_sst/intel_sst_common.h | 4 +-
2 files changed, 18 insertions(+), 22 deletions(-)
diff --git a/drivers/staging/intel_sst/intel_sst_app_interface.c b/drivers/staging/intel_sst/intel_sst_app_interface.c
index 834bb61..9618c79 100644
--- a/drivers/staging/intel_sst/intel_sst_app_interface.c
+++ b/drivers/staging/intel_sst/intel_sst_app_interface.c
@@ -392,7 +392,7 @@ static int snd_sst_fill_kernel_list(struct stream_info *stream,
{
struct sst_stream_bufs *stream_bufs;
unsigned long index, mmap_len;
- unsigned char *bufp;
+ unsigned char __user *bufp;
unsigned long size, copied_size;
int retval = 0, add_to_list = 0;
static int sent_offset;
@@ -527,9 +527,7 @@ static int snd_sst_copy_userbuf_capture(struct stream_info *stream,
/* copy to user */
list_for_each_entry_safe(entry, _entry,
copy_to_list, node) {
- if (copy_to_user((void *)
- iovec[entry->iov_index].iov_base +
- entry->iov_offset,
+ if (copy_to_user(iovec[entry->iov_index].iov_base + entry->iov_offset,
kbufs->addr + entry->offset,
entry->size)) {
/* Clean up the list and return error */
@@ -605,7 +603,7 @@ static int intel_sst_read_write(unsigned int str_id, char __user *buf,
buf, (int) count, (int) stream->status);
stream->buf_type = SST_BUF_USER_STATIC;
- iovec.iov_base = (void *)buf;
+ iovec.iov_base = buf;
iovec.iov_len = count;
nr_segs = 1;
@@ -878,7 +876,7 @@ long intel_sst_ioctl(struct file *file_ptr, unsigned int cmd, unsigned long arg)
data->str_id = retval;
str_info = &sst_drv_ctx->streams[retval];
str_info->src = SST_DRV;
- dest = (char *)arg + offsetof(struct snd_sst_params, stream_id);
+ dest = (char __user *)arg + offsetof(struct snd_sst_params, stream_id);
retval = copy_to_user(dest, &retval, sizeof(__u32));
if (retval)
retval = -EFAULT;
@@ -947,7 +945,7 @@ long intel_sst_ioctl(struct file *file_ptr, unsigned int cmd, unsigned long arg)
pr_debug("sst: id:%d\n, vol:%d, ramp_dur:%d, ramp_type:%d\n",
get_vol.stream_id, get_vol.volume,
get_vol.ramp_duration, get_vol.ramp_type);
- if (copy_to_user((struct snd_sst_vol *)arg,
+ if (copy_to_user((struct snd_sst_vol __user *)arg,
&get_vol, sizeof(get_vol))) {
retval = -EFAULT;
break;
@@ -987,7 +985,7 @@ long intel_sst_ioctl(struct file *file_ptr, unsigned int cmd, unsigned long arg)
retval = -EIO;
break;
}
- if (copy_to_user((struct snd_sst_get_stream_params *)arg,
+ if (copy_to_user((struct snd_sst_get_stream_params __user *)arg,
&get_params, sizeof(get_params))) {
retval = -EFAULT;
break;
@@ -1032,8 +1030,7 @@ long intel_sst_ioctl(struct file *file_ptr, unsigned int cmd, unsigned long arg)
break;
}
memcpy_fromio(&tstamp,
- ((void *)(sst_drv_ctx->mailbox + SST_TIME_STAMP)
- +(str_id * sizeof(tstamp))),
+ sst_drv_ctx->mailbox + SST_TIME_STAMP + str_id * sizeof(tstamp),
sizeof(tstamp));
time = tstamp.samples_rendered;
freq = (unsigned long long) tstamp.sampling_frequency;
@@ -1141,11 +1138,11 @@ long intel_sst_ioctl(struct file *file_ptr, unsigned int cmd, unsigned long arg)
dbufs_local.output_bytes_produced =
param.output_bytes_produced;
- if (copy_from_user(&ibufs, param.ibufs, sizeof(ibufs))) {
+ if (copy_from_user(&ibufs, (void __user *)param.ibufs, sizeof(ibufs))) {
retval = -EFAULT;
break;
}
- if (copy_from_user(&obufs, param.obufs, sizeof(obufs))) {
+ if (copy_from_user(&obufs, (void __user *)param.obufs, sizeof(obufs))) {
retval = -EFAULT;
break;
}
@@ -1157,7 +1154,7 @@ long intel_sst_ioctl(struct file *file_ptr, unsigned int cmd, unsigned long arg)
goto free_iobufs;
}
- if (copy_from_user(ibuf_tmp, ibufs.buff_entry,
+ if (copy_from_user(ibuf_tmp, (void __user *)ibufs.buff_entry,
ibufs.entries * sizeof(*ibuf_tmp))) {
retval = -EFAULT;
goto free_iobufs;
@@ -1165,7 +1162,7 @@ long intel_sst_ioctl(struct file *file_ptr, unsigned int cmd, unsigned long arg)
ibufs.buff_entry = ibuf_tmp;
dbufs_local.ibufs = &ibufs;
- if (copy_from_user(obuf_tmp, obufs.buff_entry,
+ if (copy_from_user(obuf_tmp, (void __user *)obufs.buff_entry,
obufs.entries * sizeof(*obuf_tmp))) {
retval = -EFAULT;
goto free_iobufs;
@@ -1179,7 +1176,7 @@ long intel_sst_ioctl(struct file *file_ptr, unsigned int cmd, unsigned long arg)
goto free_iobufs;
}
- dest = (char *)arg + offsetof(struct snd_sst_dbufs, input_bytes_consumed);
+ dest = (char __user *)arg + offsetof(struct snd_sst_dbufs, input_bytes_consumed);
if (copy_to_user(dest,
&dbufs_local.input_bytes_consumed,
sizeof(unsigned long long))) {
@@ -1187,7 +1184,7 @@ long intel_sst_ioctl(struct file *file_ptr, unsigned int cmd, unsigned long arg)
goto free_iobufs;
}
- dest = (char *)arg + offsetof(struct snd_sst_dbufs, input_bytes_consumed);
+ dest = (char __user *)arg + offsetof(struct snd_sst_dbufs, input_bytes_consumed);
if (copy_to_user(dest,
&dbufs_local.output_bytes_produced,
sizeof(unsigned long long))) {
@@ -1210,7 +1207,7 @@ free_iobufs:
break;
case _IOC_NR(SNDRV_SST_STREAM_BYTES_DECODED): {
- unsigned long long *bytes = (unsigned long long *)arg;
+ unsigned long long __user *bytes = (unsigned long long __user *)arg;
struct snd_sst_tstamp tstamp = {0};
pr_debug("sst: STREAM_BYTES_DECODED recieved!\n");
@@ -1219,8 +1216,7 @@ free_iobufs:
break;
}
memcpy_fromio(&tstamp,
- ((void *)(sst_drv_ctx->mailbox + SST_TIME_STAMP)
- +(str_id * sizeof(tstamp))),
+ sst_drv_ctx->mailbox + SST_TIME_STAMP + str_id * sizeof(tstamp),
sizeof(tstamp));
if (copy_to_user(bytes, &tstamp.bytes_processed,
sizeof(*bytes)))
@@ -1243,7 +1239,7 @@ free_iobufs:
kfree(fw_info);
break;
}
- if (copy_to_user((struct snd_sst_dbufs *)arg,
+ if (copy_to_user((struct snd_sst_dbufs __user *)arg,
fw_info, sizeof(*fw_info))) {
kfree(fw_info);
retval = -EFAULT;
diff --git a/drivers/staging/intel_sst/intel_sst_common.h b/drivers/staging/intel_sst/intel_sst_common.h
index 73a98c8..bf0ead7 100644
--- a/drivers/staging/intel_sst/intel_sst_common.h
+++ b/drivers/staging/intel_sst/intel_sst_common.h
@@ -231,8 +231,8 @@ struct stream_info {
spinlock_t pcm_lock;
bool mmapped;
unsigned int sg_index; /* current buf Index */
- unsigned char *cur_ptr; /* Current static bufs */
- struct snd_sst_buf_entry *buf_entry;
+ unsigned char __user *cur_ptr; /* Current static bufs */
+ struct snd_sst_buf_entry __user *buf_entry;
struct sst_block data_blk; /* stream ops block */
struct sst_block ctrl_blk; /* stream control cmd block */
enum snd_sst_buf_type buf_type;
--
1.7.1
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