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authorNicolas Iooss <nicolas.iooss_linux@m4x.org>2016-08-28 21:10:04 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-10-22 12:26:55 +0200
commita3a9b33e49ff91f6ceaeb1d5855046d50cefa3ef (patch)
tree1f8ee122ebe601fbb9315a3607edc1f141e04b9d
parent85e27fe87acd059aa1c615184ec2c9ac9bfe29d2 (diff)
ASoC: Intel: Atom: add a missing star in a memcpy call
commit 61ab0d403bbd9d5f6e000e3b5734049141b91f6f upstream. In sst_prepare_and_post_msg(), when a response is received in "block", the following code gets executed: *data = kzalloc(block->size, GFP_KERNEL); memcpy(data, (void *) block->data, block->size); The memcpy() call overwrites the content of the *data pointer instead of filling the newly-allocated memory (which pointer is hold by *data). Fix this by merging kzalloc+memcpy into a single kmemdup() call. Thanks Joe Perches for suggesting using kmemdup() Fixes: 60dc8dbacb00 ("ASoC: Intel: sst: Add some helper functions") Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org> Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--sound/soc/intel/atom/sst/sst_pvt.c14
1 files changed, 6 insertions, 8 deletions
diff --git a/sound/soc/intel/atom/sst/sst_pvt.c b/sound/soc/intel/atom/sst/sst_pvt.c
index adb32fefd693..b1e6b8f34a6a 100644
--- a/sound/soc/intel/atom/sst/sst_pvt.c
+++ b/sound/soc/intel/atom/sst/sst_pvt.c
@@ -279,17 +279,15 @@ int sst_prepare_and_post_msg(struct intel_sst_drv *sst,
if (response) {
ret = sst_wait_timeout(sst, block);
- if (ret < 0) {
+ if (ret < 0)
goto out;
- } else if(block->data) {
- if (!data)
- goto out;
- *data = kzalloc(block->size, GFP_KERNEL);
- if (!(*data)) {
+
+ if (data && block->data) {
+ *data = kmemdup(block->data, block->size, GFP_KERNEL);
+ if (!*data) {
ret = -ENOMEM;
goto out;
- } else
- memcpy(data, (void *) block->data, block->size);
+ }
}
}
out: