[PATCH] ASoC: Intel: Fix incorrect sizeof() in sst_hsw_stream_get_volume()

[PATCH] ASoC: Intel: Fix incorrect sizeof() in sst_hsw_stream_get_volume()

[Christian Engelmayer]

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Fix an incorrect sizeof() usage in sst_hsw_stream_get_volume(). sst_dsp_read()
is called to read into a variable of type u32, but is passed sizeof(u32 *) for
argument 'size_t bytes'. Detected by Coverity: CID 1195260.

Signed-off-by: Christian Engelmayer <cengelma@gmx.at>
---
 sound/soc/intel/sst-haswell-ipc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sound/soc/intel/sst-haswell-ipc.c b/sound/soc/intel/sst-haswell-ipc.c
index f46bb4d..455a185 100644
--- a/sound/soc/intel/sst-haswell-ipc.c
+++ b/sound/soc/intel/sst-haswell-ipc.c
@@ -991,7 +991,8 @@ int sst_hsw_stream_get_volume(struct sst_hsw *hsw, struct sst_hsw_stream *stream
 		return -EINVAL;
 
 	sst_dsp_read(hsw->dsp, volume,
-		stream->reply.volume_register_address[channel], sizeof(volume));
+		stream->reply.volume_register_address[channel],
+		sizeof(*volume));
 
 	return 0;
 }
-- 
1.8.3.2

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Re: [PATCH] ASoC: Intel: Fix incorrect sizeof() in sst_hsw_stream_get_volume()

[Mark Brown]

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On Sun, Apr 13, 2014 at 07:56:36PM +0200, Christian Engelmayer wrote:
> Fix an incorrect sizeof() usage in sst_hsw_stream_get_volume(). sst_dsp_read()
> is called to read into a variable of type u32, but is passed sizeof(u32 *) for
> argument 'size_t bytes'. Detected by Coverity: CID 1195260.

Applied, thanks.

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Re: [PATCH] ASoC: Intel: Fix incorrect sizeof() in sst_hsw_stream_get_volume()

[Dan Carpenter]

On Sun, Apr 13, 2014 at 07:56:36PM +0200, Christian Engelmayer wrote:
> Fix an incorrect sizeof() usage in sst_hsw_stream_get_volume(). sst_dsp_read()
> is called to read into a variable of type u32, but is passed sizeof(u32 *) for
> argument 'size_t bytes'. Detected by Coverity: CID 1195260.
> 
> Signed-off-by: Christian Engelmayer <cengelma@gmx.at>

There are a couple others in this file.  I introduced one of them.  :(
Sorry about that.  I'll send a patch for that.

regards,
dan carpenter

[patch] ASoC: Intel: some incorrect sizeof() usages

[Dan Carpenter]

The intent was to say "sizeof(*pos)" and not "sizeof(pos)".

The sizeof(*pos) is 8 bytes so the bug won't show up on 64 bit systems.
The sizeof(*dx) is 172 bytes so that will be a bugfix.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
Static analysis.  Not tested.

diff --git a/sound/soc/intel/sst-haswell-ipc.c b/sound/soc/intel/sst-haswell-ipc.c
index f46bb4d..4ed2d17 100644
--- a/sound/soc/intel/sst-haswell-ipc.c
+++ b/sound/soc/intel/sst-haswell-ipc.c
@@ -617,7 +617,7 @@ static void hsw_notification_work(struct work_struct *work)
 	case IPC_POSITION_CHANGED:
 		trace_ipc_notification("DSP stream position changed for",
 			stream->reply.stream_hw_id);
-		sst_dsp_inbox_read(hsw->dsp, pos, sizeof(pos));
+		sst_dsp_inbox_read(hsw->dsp, pos, sizeof(*pos));
 
 		if (stream->notify_position)
 			stream->notify_position(stream, stream->pdata);
@@ -1609,7 +1609,7 @@ int sst_hsw_dx_set_state(struct sst_hsw *hsw,
 	trace_ipc_request("PM enter Dx state", state);
 
 	ret = ipc_tx_message_wait(hsw, header, &state_, sizeof(state_),
-		dx, sizeof(dx));
+		dx, sizeof(*dx));
 	if (ret < 0) {
 		dev_err(hsw->dev, "ipc: error set dx state %d failed\n", state);
 		return ret;

Re: [patch] ASoC: Intel: some incorrect sizeof() usages

[Mark Brown]

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On Wed, Apr 16, 2014 at 06:38:11PM +0300, Dan Carpenter wrote:
> The intent was to say "sizeof(*pos)" and not "sizeof(pos)".
> 
> The sizeof(*pos) is 8 bytes so the bug won't show up on 64 bit systems.
> The sizeof(*dx) is 172 bytes so that will be a bugfix.

Applied, thanks.

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