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Groups > linux.kernel > #1377336
| From | Kamal Mostafa <kamal@canonical.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 4.2.y-ckt 25/70] [media] au0828: Fix dev_state handling |
| Date | 2016-04-12 23:40 +0200 |
| Message-ID | <rnect-5Ws-69@gated-at.bofh.it> (permalink) |
| References | <rndzH-5be-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
4.2.8-ckt8 -stable review patch. If anyone has any objections, please let me know.
---8<------------------------------------------------------------
From: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
commit e8e3039f5b941f7825d335f8ca11c12a8104db11 upstream.
The au0828 dev_state is actually a bit mask. It should not be
checking with "==" but, instead, with a logic and. There are some
places where it was doing it wrong.
Fix that by replacing the dev_state set/clear/test with the
bitops.
As reviewed by Shuah:
"Looks good. Tested running bind/unbind au0828 loop for 1000 times.
Didn't see any problems and the v4l2_querycap() problem has been
fixed with this patch.
After the above test, ran bind/unbind snd_usb_audio 1000 times.
Didn't see any problems. Generated media graph and the graph
looks good."
Reviewed-by: Shuah Khan <shuahkh@osg.samsung.com>
Tested-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/media/usb/au0828/au0828-core.c | 2 +-
drivers/media/usb/au0828/au0828-input.c | 4 +--
drivers/media/usb/au0828/au0828-video.c | 63 ++++++++++++++++-----------------
drivers/media/usb/au0828/au0828.h | 9 ++---
4 files changed, 39 insertions(+), 39 deletions(-)
diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c
index 0934024..d91ded7 100644
--- a/drivers/media/usb/au0828/au0828-core.c
+++ b/drivers/media/usb/au0828/au0828-core.c
@@ -159,7 +159,7 @@ static void au0828_usb_disconnect(struct usb_interface *interface)
Set the status so poll routines can check and avoid
access after disconnect.
*/
- dev->dev_state = DEV_DISCONNECTED;
+ set_bit(DEV_DISCONNECTED, &dev->dev_state);
au0828_rc_unregister(dev);
/* Digital TV */
diff --git a/drivers/media/usb/au0828/au0828-input.c b/drivers/media/usb/au0828/au0828-input.c
index b0f0679..3d6687f 100644
--- a/drivers/media/usb/au0828/au0828-input.c
+++ b/drivers/media/usb/au0828/au0828-input.c
@@ -130,7 +130,7 @@ static int au0828_get_key_au8522(struct au0828_rc *ir)
bool first = true;
/* do nothing if device is disconnected */
- if (ir->dev->dev_state == DEV_DISCONNECTED)
+ if (test_bit(DEV_DISCONNECTED, &ir->dev->dev_state))
return 0;
/* Check IR int */
@@ -260,7 +260,7 @@ static void au0828_rc_stop(struct rc_dev *rc)
cancel_delayed_work_sync(&ir->work);
/* do nothing if device is disconnected */
- if (ir->dev->dev_state != DEV_DISCONNECTED) {
+ if (!test_bit(DEV_DISCONNECTED, &ir->dev->dev_state)) {
/* Disable IR */
au8522_rc_clear(ir, 0xe0, 1 << 4);
}
diff --git a/drivers/media/usb/au0828/au0828-video.c b/drivers/media/usb/au0828/au0828-video.c
index 5cc2bb1..0605c0f 100644
--- a/drivers/media/usb/au0828/au0828-video.c
+++ b/drivers/media/usb/au0828/au0828-video.c
@@ -104,14 +104,13 @@ static inline void print_err_status(struct au0828_dev *dev,
static int check_dev(struct au0828_dev *dev)
{
- if (dev->dev_state & DEV_DISCONNECTED) {
+ if (test_bit(DEV_DISCONNECTED, &dev->dev_state)) {
pr_info("v4l2 ioctl: device not present\n");
return -ENODEV;
}
- if (dev->dev_state & DEV_MISCONFIGURED) {
- pr_info("v4l2 ioctl: device is misconfigured; "
- "close and open it again\n");
+ if (test_bit(DEV_MISCONFIGURED, &dev->dev_state)) {
+ pr_info("v4l2 ioctl: device is misconfigured; close and open it again\n");
return -EIO;
}
return 0;
@@ -519,8 +518,8 @@ static inline int au0828_isoc_copy(struct au0828_dev *dev, struct urb *urb)
if (!dev)
return 0;
- if ((dev->dev_state & DEV_DISCONNECTED) ||
- (dev->dev_state & DEV_MISCONFIGURED))
+ if (test_bit(DEV_DISCONNECTED, &dev->dev_state) ||
+ test_bit(DEV_MISCONFIGURED, &dev->dev_state))
return 0;
if (urb->status < 0) {
@@ -761,10 +760,10 @@ static int au0828_stream_interrupt(struct au0828_dev *dev)
int ret = 0;
dev->stream_state = STREAM_INTERRUPT;
- if (dev->dev_state == DEV_DISCONNECTED)
+ if (test_bit(DEV_DISCONNECTED, &dev->dev_state))
return -ENODEV;
else if (ret) {
- dev->dev_state = DEV_MISCONFIGURED;
+ set_bit(DEV_MISCONFIGURED, &dev->dev_state);
dprintk(1, "%s device is misconfigured!\n", __func__);
return ret;
}
@@ -952,7 +951,7 @@ static int au0828_v4l2_open(struct file *filp)
int ret;
dprintk(1,
- "%s called std_set %d dev_state %d stream users %d users %d\n",
+ "%s called std_set %d dev_state %ld stream users %d users %d\n",
__func__, dev->std_set_in_tuner_core, dev->dev_state,
dev->streaming_users, dev->users);
@@ -971,7 +970,7 @@ static int au0828_v4l2_open(struct file *filp)
au0828_analog_stream_enable(dev);
au0828_analog_stream_reset(dev);
dev->stream_state = STREAM_OFF;
- dev->dev_state |= DEV_INITIALIZED;
+ set_bit(DEV_INITIALIZED, &dev->dev_state);
}
dev->users++;
mutex_unlock(&dev->lock);
@@ -985,7 +984,7 @@ static int au0828_v4l2_close(struct file *filp)
struct video_device *vdev = video_devdata(filp);
dprintk(1,
- "%s called std_set %d dev_state %d stream users %d users %d\n",
+ "%s called std_set %d dev_state %ld stream users %d users %d\n",
__func__, dev->std_set_in_tuner_core, dev->dev_state,
dev->streaming_users, dev->users);
@@ -1001,7 +1000,7 @@ static int au0828_v4l2_close(struct file *filp)
del_timer_sync(&dev->vbi_timeout);
}
- if (dev->dev_state & DEV_DISCONNECTED)
+ if (test_bit(DEV_DISCONNECTED, &dev->dev_state))
goto end;
if (dev->users == 1) {
@@ -1030,7 +1029,7 @@ static void au0828_init_tuner(struct au0828_dev *dev)
.type = V4L2_TUNER_ANALOG_TV,
};
- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
+ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
if (dev->std_set_in_tuner_core)
@@ -1102,7 +1101,7 @@ static int vidioc_querycap(struct file *file, void *priv,
struct video_device *vdev = video_devdata(file);
struct au0828_dev *dev = video_drvdata(file);
- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
+ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
strlcpy(cap->driver, "au0828", sizeof(cap->driver));
@@ -1145,7 +1144,7 @@ static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
{
struct au0828_dev *dev = video_drvdata(file);
- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
+ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
f->fmt.pix.width = dev->width;
@@ -1164,7 +1163,7 @@ static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
{
struct au0828_dev *dev = video_drvdata(file);
- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
+ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
return au0828_set_format(dev, VIDIOC_TRY_FMT, f);
@@ -1176,7 +1175,7 @@ static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
struct au0828_dev *dev = video_drvdata(file);
int rc;
- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
+ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
rc = check_dev(dev);
@@ -1198,7 +1197,7 @@ static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
{
struct au0828_dev *dev = video_drvdata(file);
- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
+ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
if (norm == dev->std)
@@ -1230,7 +1229,7 @@ static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
{
struct au0828_dev *dev = video_drvdata(file);
- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
+ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
*norm = dev->std;
@@ -1253,7 +1252,7 @@ static int vidioc_enum_input(struct file *file, void *priv,
[AU0828_VMUX_DEBUG] = "tv debug"
};
- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
+ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
tmp = input->index;
@@ -1283,7 +1282,7 @@ static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
{
struct au0828_dev *dev = video_drvdata(file);
- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
+ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
*i = dev->ctrl_input;
@@ -1294,7 +1293,7 @@ static void au0828_s_input(struct au0828_dev *dev, int index)
{
int i;
- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
+ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
switch (AUVI_INPUT(index).type) {
@@ -1379,7 +1378,7 @@ static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
{
struct au0828_dev *dev = video_drvdata(file);
- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
+ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
a->index = dev->ctrl_ainput;
@@ -1399,7 +1398,7 @@ static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio
if (a->index != dev->ctrl_ainput)
return -EINVAL;
- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
+ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
return 0;
}
@@ -1411,7 +1410,7 @@ static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
if (t->index != 0)
return -EINVAL;
- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
+ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
strcpy(t->name, "Auvitek tuner");
@@ -1431,7 +1430,7 @@ static int vidioc_s_tuner(struct file *file, void *priv,
if (t->index != 0)
return -EINVAL;
- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
+ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
au0828_init_tuner(dev);
@@ -1453,7 +1452,7 @@ static int vidioc_g_frequency(struct file *file, void *priv,
if (freq->tuner != 0)
return -EINVAL;
- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
+ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
freq->frequency = dev->ctrl_freq;
return 0;
@@ -1468,7 +1467,7 @@ static int vidioc_s_frequency(struct file *file, void *priv,
if (freq->tuner != 0)
return -EINVAL;
- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
+ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
au0828_init_tuner(dev);
@@ -1494,7 +1493,7 @@ static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
{
struct au0828_dev *dev = video_drvdata(file);
- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
+ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
format->fmt.vbi.samples_per_line = dev->vbi_width;
@@ -1520,7 +1519,7 @@ static int vidioc_cropcap(struct file *file, void *priv,
if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
+ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
cc->bounds.left = 0;
@@ -1542,7 +1541,7 @@ static int vidioc_g_register(struct file *file, void *priv,
{
struct au0828_dev *dev = video_drvdata(file);
- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
+ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
reg->val = au0828_read(dev, reg->reg);
@@ -1555,7 +1554,7 @@ static int vidioc_s_register(struct file *file, void *priv,
{
struct au0828_dev *dev = video_drvdata(file);
- dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
+ dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
dev->std_set_in_tuner_core, dev->dev_state);
return au0828_writereg(dev, reg->reg, reg->val);
diff --git a/drivers/media/usb/au0828/au0828.h b/drivers/media/usb/au0828/au0828.h
index 3b48000..42a5379 100644
--- a/drivers/media/usb/au0828/au0828.h
+++ b/drivers/media/usb/au0828/au0828.h
@@ -21,6 +21,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#include <linux/bitops.h>
#include <linux/usb.h>
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
@@ -121,9 +122,9 @@ enum au0828_stream_state {
/* device state */
enum au0828_dev_state {
- DEV_INITIALIZED = 0x01,
- DEV_DISCONNECTED = 0x02,
- DEV_MISCONFIGURED = 0x04
+ DEV_INITIALIZED = 0,
+ DEV_DISCONNECTED = 1,
+ DEV_MISCONFIGURED = 2
};
struct au0828_dev;
@@ -247,7 +248,7 @@ struct au0828_dev {
int input_type;
int std_set_in_tuner_core;
unsigned int ctrl_input;
- enum au0828_dev_state dev_state;
+ long unsigned int dev_state; /* defined at enum au0828_dev_state */;
enum au0828_stream_state stream_state;
wait_queue_head_t open;
--
2.7.4
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2016-04-12 23:30 +0200 [PATCH 4.2.y-ckt 40/70] rbd: use GFP_NOIO consistently for request allocations Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:30 +0200 [PATCH 4.2.y-ckt 50/70] parisc: Unbreak handling exceptions from kernel modules Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:30 +0200 [PATCH 4.2.y-ckt 52/70] net: bcmgenet: fix dev->stats.tx_bytes accounting Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:30 +0200 [PATCH 4.2.y-ckt 31/70] KVM: x86: Inject pending interrupt even if pending nmi exist Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:30 +0200 [PATCH 4.2.y-ckt 34/70] iio: st_magn: always define ST_MAGN_TRIGGER_SET_STATE Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:30 +0200 [PATCH 4.2.y-ckt 48/70] parisc: Avoid function pointers for kernel exception routines Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:30 +0200 [PATCH 4.2.y-ckt 56/70] ip6_tunnel: set rtnl_link_ops before calling register_netdevice Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:30 +0200 [PATCH 4.2.y-ckt 45/70] virtio: virtio 1.0 cs04 spec compliance for reset Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:30 +0200 [PATCH 4.2.y-ckt 54/70] ipv6: udp: fix UDP_MIB_IGNOREDMULTI updates Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:30 +0200 [PATCH 4.2.y-ckt 44/70] USB: option: add "D-Link DWM-221 B1" device id Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:30 +0200 [PATCH 4.2.y-ckt 30/70] ALSA: hda - fix front mic problem for a HP desktop Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:40 +0200 [PATCH 4.2.y-ckt 27/70] drm/dp: move hw_mutex up the call stack Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:40 +0200 [PATCH 4.2.y-ckt 08/70] nfs: use file_dentry() Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:40 +0200 [PATCH 4.2.y-ckt 24/70] [media] au0828: fix au0828_v4l2_close() dev_state race condition Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:40 +0200 [PATCH 4.2.y-ckt 02/70] PKCS#7: pkcs7_validate_trust(): initialize the _trusted output argument Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:40 +0200 [PATCH 4.2.y-ckt 16/70] usb: renesas_usbhs: avoid NULL pointer derefernce in usbhsf_pkt_handler() Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:40 +0200 [PATCH 4.2.y-ckt 10/70] drm/radeon: add another R7 370 quirk Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:40 +0200 [PATCH 4.2.y-ckt 20/70] ALSA: usb-audio: Fix double-free in error paths after snd_usb_add_audio_stream() call Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:40 +0200 [PATCH 4.2.y-ckt 05/70] ALSA: hda - Apply fix for white noise on Asus N550JV, too Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:40 +0200 [PATCH 4.2.y-ckt 26/70] sd: Fix excessive capacity printing on devices with blocks bigger than 512 bytes Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:40 +0200 [PATCH 4.2.y-ckt 23/70] USB: digi_acceleport: do sanity checking for the number of ports Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:40 +0200 [PATCH 4.2.y-ckt 32/70] ALSA: timer: Use mod_timer() for rearming the system timer Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:40 +0200 [PATCH 4.2.y-ckt 14/70] pinctrl: pistachio: fix mfio84-89 function description and pinmux. Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:40 +0200 [PATCH 4.2.y-ckt 15/70] pinctrl: sunxi: Fix A33 external interrupts not working Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:40 +0200 [PATCH 4.2.y-ckt 28/70] drm/udl: Use unlocked gem unreferencing Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:40 +0200 [PATCH 4.2.y-ckt 03/70] ALSA: hda - Asus N750JV external subwoofer fixup Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:40 +0200 [PATCH 4.2.y-ckt 12/70] powerpc/mm: Fixup preempt underflow with huge pages Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:40 +0200 [PATCH 4.2.y-ckt 04/70] ALSA: hda - Fix white noise on Asus N750JV headphone Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:40 +0200 [PATCH 4.2.y-ckt 18/70] btrfs: fix crash/invalid memory access on fsync when using overlayfs Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:40 +0200 [PATCH 4.2.y-ckt 29/70] ext4: add lockdep annotations for i_data_sem Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:40 +0200 [PATCH 4.2.y-ckt 11/70] drm/radeon: add a dpm quirk for all R7 370 parts Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:40 +0200 [PATCH 4.2.y-ckt 13/70] pinctrl: sh-pfc: only use dummy states for non-DT platforms Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:40 +0200 [PATCH 4.2.y-ckt 17/70] usb: renesas_usbhs: disable TX IRQ before starting TX DMAC transfer Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:40 +0200 [PATCH 4.2.y-ckt 21/70] USB: mct_u232: add sanity checking in probe Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:40 +0200 [PATCH 4.2.y-ckt 25/70] [media] au0828: Fix dev_state handling Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:40 +0200 [PATCH 4.2.y-ckt 07/70] fs: add file_dentry() Kamal Mostafa <kamal@canonical.com> - 2016-04-12 23:40 +0200
csiph-web