diff options
Diffstat (limited to 'drivers/media/usb/hdpvr/hdpvr-core.c')
| -rw-r--r-- | drivers/media/usb/hdpvr/hdpvr-core.c | 32 |
1 files changed, 13 insertions, 19 deletions
diff --git a/drivers/media/usb/hdpvr/hdpvr-core.c b/drivers/media/usb/hdpvr/hdpvr-core.c index 8247c19d626..c5638964c3f 100644 --- a/drivers/media/usb/hdpvr/hdpvr-core.c +++ b/drivers/media/usb/hdpvr/hdpvr-core.c @@ -78,7 +78,8 @@ void hdpvr_delete(struct hdpvr_device *dev) static void challenge(u8 *bytes) { - u64 *i64P, tmp64; + __le64 *i64P; + u64 tmp64; uint i, idx; for (idx = 0; idx < 32; ++idx) { @@ -106,10 +107,10 @@ static void challenge(u8 *bytes) for (i = 0; i < 3; i++) bytes[1] *= bytes[6] + 1; for (i = 0; i < 3; i++) { - i64P = (u64 *)bytes; + i64P = (__le64 *)bytes; tmp64 = le64_to_cpup(i64P); - tmp64 <<= bytes[7] & 0x0f; - *i64P += cpu_to_le64(tmp64); + tmp64 = tmp64 + (tmp64 << (bytes[7] & 0x0f)); + *i64P = cpu_to_le64(tmp64); } break; } @@ -197,7 +198,6 @@ static int device_authorization(struct hdpvr_device *dev) hex_dump_to_buffer(response, 8, 16, 1, print_buf, 5*buf_size+1, 0); v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, " response: %s\n", print_buf); - kfree(print_buf); #endif msleep(100); @@ -213,6 +213,9 @@ static int device_authorization(struct hdpvr_device *dev) retval = ret != 8; unlock: mutex_unlock(&dev->usbc_mutex); +#ifdef HDPVR_DEBUG + kfree(print_buf); +#endif return retval; } @@ -220,7 +223,6 @@ static int hdpvr_device_init(struct hdpvr_device *dev) { int ret; u8 *buf; - struct hdpvr_video_info *vidinf; if (device_authorization(dev)) return -EACCES; @@ -242,13 +244,6 @@ static int hdpvr_device_init(struct hdpvr_device *dev) "control request returned %d\n", ret); mutex_unlock(&dev->usbc_mutex); - vidinf = get_video_info(dev); - if (!vidinf) - v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, - "no valid video signal or device init failed\n"); - else - kfree(vidinf); - /* enable fan and bling leds */ mutex_lock(&dev->usbc_mutex); buf[0] = 0x1; @@ -309,7 +304,10 @@ static int hdpvr_probe(struct usb_interface *interface, goto error; } - dev->workqueue = 0; + /* init video transfer queues first of all */ + /* to prevent oops in hdpvr_delete() on error paths */ + INIT_LIST_HEAD(&dev->free_buff_list); + INIT_LIST_HEAD(&dev->rec_buff_list); /* register v4l2_device early so it can be used for printks */ if (v4l2_device_register(&interface->dev, &dev->v4l2_dev)) { @@ -333,10 +331,6 @@ static int hdpvr_probe(struct usb_interface *interface, if (!dev->workqueue) goto error; - /* init video transfer queues */ - INIT_LIST_HEAD(&dev->free_buff_list); - INIT_LIST_HEAD(&dev->rec_buff_list); - dev->options = hdpvr_default_options; if (default_video_input < HDPVR_VIDEO_INPUTS) @@ -413,7 +407,7 @@ static int hdpvr_probe(struct usb_interface *interface, video_nr[atomic_inc_return(&dev_nr)]); if (retval < 0) { v4l2_err(&dev->v4l2_dev, "registering videodev failed\n"); - goto error; + goto reg_fail; } /* let the user know what node this device is now attached to */ |