ALSA hwdep is a thin wrapper of usual ioctl operation, thus it's better to
support compatible ioctl operation.
Currently, ALSA USB US122L module doesn't support it. This commit adds
support for it.
Fixes: 030a07e4412 ('ALSA: Add USB US122L driver')
Signed-off-by: Takashi Sakamoto <o-takashi@xxxxxxxxxxxxx>
---
sound/usb/usx2y/us122l.c | 15 ++++++++++++++-
1 file changed, 14 insertions(+), 1 deletion(-)
diff --git a/sound/usb/usx2y/us122l.c b/sound/usb/usx2y/us122l.c
index ace708f..36654ac 100644
--- a/sound/usb/usx2y/us122l.c
+++ b/sound/usb/usx2y/us122l.c
@@ -24,6 +24,7 @@
#include <sound/hwdep.h>
#include <sound/pcm.h>
#include <sound/initval.h>
+#include <linux/compat.h>
#define MODNAME "US122L"
#include "usb_stream.c"
#include "../usbaudio.h"
@@ -453,6 +454,18 @@ free:
return err;
}
+#ifdef CONFIG_COMPAT
+static int usb_stream_hwdep_compat_ioctl(struct snd_hwdep *hw,
+ struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ return usb_stream_hwdep_compat_ioctl(hw, file, cmd,
+ (unsigned long)compat_ptr(arg));
+}
+#else
+#define usb_stream_hwdep_compat_ioctl NULL
+#endif
+
#define SND_USB_STREAM_ID "USB STREAM"
static int usb_stream_hwdep_new(struct snd_card *card)
{
@@ -469,7 +482,7 @@ static int usb_stream_hwdep_new(struct snd_card *card)
hw->ops.open = usb_stream_hwdep_open;
hw->ops.release = usb_stream_hwdep_release;
hw->ops.ioctl = usb_stream_hwdep_ioctl;
- hw->ops.ioctl_compat = usb_stream_hwdep_ioctl;
+ hw->ops.ioctl_compat = usb_stream_hwdep_compat_ioctl;
hw->ops.mmap = usb_stream_hwdep_mmap;
hw->ops.poll = usb_stream_hwdep_poll;
--
2.7.4
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