Implement:
dvb_usbv2_generic_rw_locked()
dvb_usbv2_generic_write_locked()
Caller must hold device lock when locked versions are called.
Signed-off-by: Antti Palosaari <crope@xxxxxx>
---
drivers/media/usb/dvb-usb-v2/dvb_usb.h | 4 ++++
drivers/media/usb/dvb-usb-v2/dvb_usb_urb.c | 38 ++++++++++++++++++++++++++----
2 files changed, 37 insertions(+), 5 deletions(-)
diff --git a/drivers/media/usb/dvb-usb-v2/dvb_usb.h b/drivers/media/usb/dvb-usb-v2/dvb_usb.h
index 3cac8bd..42801f8 100644
--- a/drivers/media/usb/dvb-usb-v2/dvb_usb.h
+++ b/drivers/media/usb/dvb-usb-v2/dvb_usb.h
@@ -400,5 +400,9 @@ extern int dvb_usbv2_reset_resume(struct usb_interface *);
/* the generic read/write method for device control */
extern int dvb_usbv2_generic_rw(struct dvb_usb_device *, u8 *, u16, u8 *, u16);
extern int dvb_usbv2_generic_write(struct dvb_usb_device *, u8 *, u16);
+/* caller must hold lock when locked versions are called */
+extern int dvb_usbv2_generic_rw_locked(struct dvb_usb_device *,
+ u8 *, u16, u8 *, u16);
+extern int dvb_usbv2_generic_write_locked(struct dvb_usb_device *, u8 *, u16);
#endif
diff --git a/drivers/media/usb/dvb-usb-v2/dvb_usb_urb.c b/drivers/media/usb/dvb-usb-v2/dvb_usb_urb.c
index 5716662..74c911f 100644
--- a/drivers/media/usb/dvb-usb-v2/dvb_usb_urb.c
+++ b/drivers/media/usb/dvb-usb-v2/dvb_usb_urb.c
@@ -21,8 +21,8 @@
#include "dvb_usb_common.h"
-int dvb_usbv2_generic_rw(struct dvb_usb_device *d, u8 *wbuf, u16 wlen, u8 *rbuf,
- u16 rlen)
+int dvb_usb_v2_generic_io(struct dvb_usb_device *d,
+ u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
{
int ret, actual_length;
@@ -32,8 +32,6 @@ int dvb_usbv2_generic_rw(struct dvb_usb_device *d, u8 *wbuf, u16 wlen, u8 *rbuf,
return -EINVAL;
}
- mutex_lock(&d->usb_mutex);
-
dev_dbg(&d->udev->dev, "%s: >>> %*ph\n", __func__, wlen, wbuf);
ret = usb_bulk_msg(d->udev, usb_sndbulkpipe(d->udev,
@@ -63,13 +61,43 @@ int dvb_usbv2_generic_rw(struct dvb_usb_device *d, u8 *wbuf, u16 wlen, u8 *rbuf,
actual_length, rbuf);
}
+ return ret;
+}
+
+int dvb_usbv2_generic_rw(struct dvb_usb_device *d,
+ u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
+{
+ int ret;
+
+ mutex_lock(&d->usb_mutex);
+ ret = dvb_usb_v2_generic_io(d, wbuf, wlen, rbuf, rlen);
mutex_unlock(&d->usb_mutex);
+
return ret;
}
EXPORT_SYMBOL(dvb_usbv2_generic_rw);
int dvb_usbv2_generic_write(struct dvb_usb_device *d, u8 *buf, u16 len)
{
- return dvb_usbv2_generic_rw(d, buf, len, NULL, 0);
+ int ret;
+
+ mutex_lock(&d->usb_mutex);
+ ret = dvb_usb_v2_generic_io(d, buf, len, NULL, 0);
+ mutex_unlock(&d->usb_mutex);
+
+ return ret;
}
EXPORT_SYMBOL(dvb_usbv2_generic_write);
+
+int dvb_usbv2_generic_rw_locked(struct dvb_usb_device *d,
+ u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
+{
+ return dvb_usb_v2_generic_io(d, wbuf, wlen, rbuf, rlen);
+}
+EXPORT_SYMBOL(dvb_usbv2_generic_rw_locked);
+
+int dvb_usbv2_generic_write_locked(struct dvb_usb_device *d, u8 *buf, u16 len)
+{
+ return dvb_usb_v2_generic_io(d, buf, len, NULL, 0);
+}
+EXPORT_SYMBOL(dvb_usbv2_generic_write_locked);
--
1.7.11.7
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