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-rw-r--r--media-dib0700-protect-the-dib0700-buffer-access.patch248
1 files changed, 0 insertions, 248 deletions
diff --git a/media-dib0700-protect-the-dib0700-buffer-access.patch b/media-dib0700-protect-the-dib0700-buffer-access.patch
deleted file mode 100644
index 109cab8ec..000000000
--- a/media-dib0700-protect-the-dib0700-buffer-access.patch
+++ /dev/null
@@ -1,248 +0,0 @@
-From: Olivier Grenie <olivier.grenie@dibcom.fr>
-Date: Mon, 1 Aug 2011 15:45:58 +0000 (-0300)
-Subject: [media] dib0700: protect the dib0700 buffer access
-X-Git-Tag: next-20110927~67^2~4^2~224
-X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Fnext%2Flinux-next.git;a=commitdiff_plain;h=bff469f4167fdabfe15294f375577d7eadbaa1bb
-
-[media] dib0700: protect the dib0700 buffer access
-
-This patch protects the common buffer access inside the dib0700 in order
-to manage concurrent access. This protection is done using mutex.
-
-Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
-Cc: Florian Mickler <florian@mickler.org>
-Cc: stable@kernel.org
-Signed-off-by: Javier Marcet <javier@marcet.info>
-Signed-off-by: Olivier Grenie <olivier.grenie@dibcom.fr>
-Signed-off-by: Patrick Boettcher <patrick.boettcher@dibcom.fr>
-[mchehab@redhat.com: dprint requires 3 arguments. Replaced by dib_info]
-Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
----
-
-diff --git a/drivers/media/dvb/dvb-usb/dib0700_core.c b/drivers/media/dvb/dvb-usb/dib0700_core.c
-index 5eb91b4..a224e94 100644
---- a/drivers/media/dvb/dvb-usb/dib0700_core.c
-+++ b/drivers/media/dvb/dvb-usb/dib0700_core.c
-@@ -30,6 +30,11 @@ int dib0700_get_version(struct dvb_usb_device *d, u32 *hwversion,
- struct dib0700_state *st = d->priv;
- int ret;
-
-+ if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
-+ deb_info("could not acquire lock");
-+ return 0;
-+ }
-+
- ret = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0),
- REQUEST_GET_VERSION,
- USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
-@@ -46,6 +51,7 @@ int dib0700_get_version(struct dvb_usb_device *d, u32 *hwversion,
- if (fwtype != NULL)
- *fwtype = (st->buf[12] << 24) | (st->buf[13] << 16) |
- (st->buf[14] << 8) | st->buf[15];
-+ mutex_unlock(&d->usb_mutex);
- return ret;
- }
-
-@@ -108,7 +114,12 @@ int dib0700_ctrl_rd(struct dvb_usb_device *d, u8 *tx, u8 txlen, u8 *rx, u8 rxlen
- int dib0700_set_gpio(struct dvb_usb_device *d, enum dib07x0_gpios gpio, u8 gpio_dir, u8 gpio_val)
- {
- struct dib0700_state *st = d->priv;
-- s16 ret;
-+ int ret;
-+
-+ if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
-+ deb_info("could not acquire lock");
-+ return 0;
-+ }
-
- st->buf[0] = REQUEST_SET_GPIO;
- st->buf[1] = gpio;
-@@ -116,6 +127,7 @@ int dib0700_set_gpio(struct dvb_usb_device *d, enum dib07x0_gpios gpio, u8 gpio_
-
- ret = dib0700_ctrl_wr(d, st->buf, 3);
-
-+ mutex_unlock(&d->usb_mutex);
- return ret;
- }
-
-@@ -125,6 +137,11 @@ static int dib0700_set_usb_xfer_len(struct dvb_usb_device *d, u16 nb_ts_packets)
- int ret;
-
- if (st->fw_version >= 0x10201) {
-+ if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
-+ deb_info("could not acquire lock");
-+ return 0;
-+ }
-+
- st->buf[0] = REQUEST_SET_USB_XFER_LEN;
- st->buf[1] = (nb_ts_packets >> 8) & 0xff;
- st->buf[2] = nb_ts_packets & 0xff;
-@@ -132,6 +149,7 @@ static int dib0700_set_usb_xfer_len(struct dvb_usb_device *d, u16 nb_ts_packets)
- deb_info("set the USB xfer len to %i Ts packet\n", nb_ts_packets);
-
- ret = dib0700_ctrl_wr(d, st->buf, 3);
-+ mutex_unlock(&d->usb_mutex);
- } else {
- deb_info("this firmware does not allow to change the USB xfer len\n");
- ret = -EIO;
-@@ -208,6 +226,10 @@ static int dib0700_i2c_xfer_new(struct i2c_adapter *adap, struct i2c_msg *msg,
-
- } else {
- /* Write request */
-+ if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
-+ deb_info("could not acquire lock");
-+ return 0;
-+ }
- st->buf[0] = REQUEST_NEW_I2C_WRITE;
- st->buf[1] = msg[i].addr << 1;
- st->buf[2] = (en_start << 7) | (en_stop << 6) |
-@@ -227,6 +249,7 @@ static int dib0700_i2c_xfer_new(struct i2c_adapter *adap, struct i2c_msg *msg,
- USB_TYPE_VENDOR | USB_DIR_OUT,
- 0, 0, st->buf, msg[i].len + 4,
- USB_CTRL_GET_TIMEOUT);
-+ mutex_unlock(&d->usb_mutex);
- if (result < 0) {
- deb_info("i2c write error (status = %d)\n", result);
- break;
-@@ -249,6 +272,10 @@ static int dib0700_i2c_xfer_legacy(struct i2c_adapter *adap,
-
- if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
- return -EAGAIN;
-+ if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
-+ deb_info("could not acquire lock");
-+ return 0;
-+ }
-
- for (i = 0; i < num; i++) {
- /* fill in the address */
-@@ -279,6 +306,7 @@ static int dib0700_i2c_xfer_legacy(struct i2c_adapter *adap,
- break;
- }
- }
-+ mutex_unlock(&d->usb_mutex);
- mutex_unlock(&d->i2c_mutex);
-
- return i;
-@@ -337,7 +365,12 @@ static int dib0700_set_clock(struct dvb_usb_device *d, u8 en_pll,
- u16 pll_loopdiv, u16 free_div, u16 dsuScaler)
- {
- struct dib0700_state *st = d->priv;
-- s16 ret;
-+ int ret;
-+
-+ if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
-+ deb_info("could not acquire lock");
-+ return 0;
-+ }
-
- st->buf[0] = REQUEST_SET_CLOCK;
- st->buf[1] = (en_pll << 7) | (pll_src << 6) |
-@@ -352,6 +385,7 @@ static int dib0700_set_clock(struct dvb_usb_device *d, u8 en_pll,
- st->buf[9] = dsuScaler & 0xff; /* LSB */
-
- ret = dib0700_ctrl_wr(d, st->buf, 10);
-+ mutex_unlock(&d->usb_mutex);
-
- return ret;
- }
-@@ -360,10 +394,16 @@ int dib0700_set_i2c_speed(struct dvb_usb_device *d, u16 scl_kHz)
- {
- struct dib0700_state *st = d->priv;
- u16 divider;
-+ int ret;
-
- if (scl_kHz == 0)
- return -EINVAL;
-
-+ if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
-+ deb_info("could not acquire lock");
-+ return 0;
-+ }
-+
- st->buf[0] = REQUEST_SET_I2C_PARAM;
- divider = (u16) (30000 / scl_kHz);
- st->buf[1] = 0;
-@@ -379,7 +419,11 @@ int dib0700_set_i2c_speed(struct dvb_usb_device *d, u16 scl_kHz)
- deb_info("setting I2C speed: %04x %04x %04x (%d kHz).",
- (st->buf[2] << 8) | (st->buf[3]), (st->buf[4] << 8) |
- st->buf[5], (st->buf[6] << 8) | st->buf[7], scl_kHz);
-- return dib0700_ctrl_wr(d, st->buf, 8);
-+
-+ ret = dib0700_ctrl_wr(d, st->buf, 8);
-+ mutex_unlock(&d->usb_mutex);
-+
-+ return ret;
- }
-
-
-@@ -515,6 +559,11 @@ int dib0700_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
- }
- }
-
-+ if (mutex_lock_interruptible(&adap->dev->usb_mutex) < 0) {
-+ deb_info("could not acquire lock");
-+ return 0;
-+ }
-+
- st->buf[0] = REQUEST_ENABLE_VIDEO;
- /* this bit gives a kind of command,
- * rather than enabling something or not */
-@@ -548,7 +597,10 @@ int dib0700_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
-
- deb_info("data for streaming: %x %x\n", st->buf[1], st->buf[2]);
-
-- return dib0700_ctrl_wr(adap->dev, st->buf, 4);
-+ ret = dib0700_ctrl_wr(adap->dev, st->buf, 4);
-+ mutex_unlock(&adap->dev->usb_mutex);
-+
-+ return ret;
- }
-
- int dib0700_change_protocol(struct rc_dev *rc, u64 rc_type)
-@@ -557,6 +609,11 @@ int dib0700_change_protocol(struct rc_dev *rc, u64 rc_type)
- struct dib0700_state *st = d->priv;
- int new_proto, ret;
-
-+ if (mutex_lock_interruptible(&d->usb_mutex) < 0) {
-+ deb_info("could not acquire lock");
-+ return 0;
-+ }
-+
- st->buf[0] = REQUEST_SET_RC;
- st->buf[1] = 0;
- st->buf[2] = 0;
-@@ -567,23 +624,29 @@ int dib0700_change_protocol(struct rc_dev *rc, u64 rc_type)
- else if (rc_type == RC_TYPE_NEC)
- new_proto = 0;
- else if (rc_type == RC_TYPE_RC6) {
-- if (st->fw_version < 0x10200)
-- return -EINVAL;
-+ if (st->fw_version < 0x10200) {
-+ ret = -EINVAL;
-+ goto out;
-+ }
-
- new_proto = 2;
-- } else
-- return -EINVAL;
-+ } else {
-+ ret = -EINVAL;
-+ goto out;
-+ }
-
- st->buf[1] = new_proto;
-
- ret = dib0700_ctrl_wr(d, st->buf, 3);
- if (ret < 0) {
- err("ir protocol setup failed");
-- return ret;
-+ goto out;
- }
-
- d->props.rc.core.protocol = rc_type;
-
-+out:
-+ mutex_unlock(&d->usb_mutex);
- return ret;
- }
-
generated by cgit (git 2.34.1) at 2024-11-11 04:43:54 +0000