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authorSebastian Reichel <sre@kernel.org>2015-04-16 20:05:18 +0300
committerSebastian Reichel <sre@kernel.org>2015-06-23 03:40:03 +0300
commit5023a5ca8e144846ec0646554336000abb11e04f (patch)
treeee7d239e6b231977c9f03bd011de1fefcdc61194 /drivers/hsi
parentb953c0d234bc72e8489d3bf51a276c5c4ec85345 (diff)
downloadlinux-5023a5ca8e144846ec0646554336000abb11e04f.tar.xz
HSI: cmt_speech: fix timestamp interface
The user interface for timestamps in the new cmt_speech driver is broken in multiple ways: - The layout is incompatible between 32-bit and 64-bit user space, because of the size differences in 'struct timespec'. This means that the driver can not work when used with 32-bit user space on a 64-bit kernel. - As there are plans to change 32-bit user space to use a 64-bit time_t type in the future, it will also be incompatible with new 32-bit user space. - It is using ktime_get_ts under it's deprecated alias (do_posix_clock_monotonic_gettime). To keep support for the user space tools written for this driver (which have lived many years out-of-tree), the interface has been hardened to unsigned 32-bit values. Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Sebastian Reichel <sre@kernel.org>
Diffstat (limited to 'drivers/hsi')
-rw-r--r--drivers/hsi/clients/cmt_speech.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/hsi/clients/cmt_speech.c b/drivers/hsi/clients/cmt_speech.c
index 4983529a9c6c..d04643f9548b 100644
--- a/drivers/hsi/clients/cmt_speech.c
+++ b/drivers/hsi/clients/cmt_speech.c
@@ -451,9 +451,14 @@ static void cs_hsi_read_on_control_complete(struct hsi_msg *msg)
dev_dbg(&hi->cl->device, "Read on control: %08X\n", cmd);
cs_release_cmd(msg);
if (hi->flags & CS_FEAT_TSTAMP_RX_CTRL) {
- struct timespec *tstamp =
+ struct timespec tspec;
+ struct cs_timestamp *tstamp =
&hi->mmap_cfg->tstamp_rx_ctrl;
- do_posix_clock_monotonic_gettime(tstamp);
+
+ ktime_get_ts(&tspec);
+
+ tstamp->tv_sec = (__u32) tspec.tv_sec;
+ tstamp->tv_nsec = (__u32) tspec.tv_nsec;
}
spin_unlock(&hi->lock);