Merge tag 'staging-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging driver updates from Greg KH:
 "Here is the "boring" staging driver update for 6.3-rc1.

  Nothing major in here at all, it's just lots of tiny code cleanups to
  bring some of the staging drivers more in line with the real portion
  of the kernel (apis and coding style.) Overall we remove more lines of
  code than we add, always a nice result.

  The big work was done by Martin Kaiser and Philipp Hortmann, both
  tackling some of the older wifi drivers, removing unused code and
  structures and a file in one case.

  Full details of the changes are in the shortlog.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'staging-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (219 commits)
  staging: r8188eu: Revert "staging: r8188eu: simplify rtw_get_ff_hwaddr"
  staging: r8188eu: replace hand coded loop with list_for_each_entry
  staging: r8188eu: merge _rtw_enqueue_cmd into its caller
  most: add maintainer entry
  staging: rtl8192e: Use BIT() instead of << for bit field MSR_LINK_MASK
  staging: rtl8192e: Rename DM_RxPathSelTable
  staging: rtl8192e: Rename diff_TH and disabledRF
  staging: rtl8192e: Rename Enable, cck_Rx_path and SS_TH_low
  staging: rtl8192e: Rename RateAdaptiveTH.., VeryLowRSSI and WAIotTHVal
  staging: rtl8192e: Rename RxPathSelectio.., RateAdaptive.. and RateAdap..
  staging: rtl8192e: Rename OFDM_Table.., CCK_Table_.. and RxPathSelecti..
  staging: rtl8192e: Rename MacBlkCtrl and remove double definition
  staging: rtl8192e: Remove blank lines in r8192E_hw.h, rtl_core.h and ..
  staging: rtl8192e: Rename AcmHw_ViqEn, AcmHw_VoqEn and ANAPAR_FOR_8192PciE
  staging: r8188eu: bagg_pkt parameter is not used
  staging: r8188eu: simplify rtw_get_ff_hwaddr
  staging: r8188eu: simplify xmit_buf flags
  staging: r8188eu: xmit_buf's ff_hwaddr is not used
  staging: r8188eu: remove unused frametag defines
  staging: r8188eu: simplify rtw_alloc_xmitframe
  ...

72 files changed, 1330 insertions, 2666 deletions

diff --git a/MAINTAINERS b/MAINTAINERS
index 124214ba6feb..8bdfe2a13135 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -14069,6 +14069,16 @@ F:	drivers/regulator/mpq7920.c
 F:	drivers/regulator/mpq7920.h
 F:	include/linux/mfd/mp2629.h
 
+MOST(R) TECHNOLOGY DRIVER
+M:	Parthiban Veerasooran <parthiban.veerasooran@microchip.com>
+M:	Christian Gromm <christian.gromm@microchip.com>
+S:	Maintained
+F:	Documentation/ABI/testing/configfs-most
+F:	Documentation/ABI/testing/sysfs-bus-most
+F:	drivers/most/
+F:	drivers/staging/most/
+F:	include/linux/most.h
+
 MOTION EYE VAIO PICTUREBOOK CAMERA DRIVER
 S:	Orphan
 W:	http://popies.net/meye/
diff --git a/drivers/staging/emxx_udc/emxx_udc.c b/drivers/staging/emxx_udc/emxx_udc.c
index b4e19174bef2..f9765841c4aa 100644
--- a/drivers/staging/emxx_udc/emxx_udc.c
+++ b/drivers/staging/emxx_udc/emxx_udc.c
@@ -2587,10 +2587,15 @@ static int nbu2ss_ep_queue(struct usb_ep *_ep,
 		req->unaligned = false;
 
 	if (req->unaligned) {
-		if (!ep->virt_buf)
+		if (!ep->virt_buf) {
 			ep->virt_buf = dma_alloc_coherent(udc->dev, PAGE_SIZE,
 							  &ep->phys_buf,
 							  GFP_ATOMIC | GFP_DMA);
+			if (!ep->virt_buf) {
+				spin_unlock_irqrestore(&udc->lock, flags);
+				return -ENOMEM;
+			}
+		}
 		if (ep->epnum > 0)  {
 			if (ep->direct == USB_DIR_IN)
 				memcpy(ep->virt_buf, req->req.buf,
diff --git a/drivers/staging/greybus/gpio.c b/drivers/staging/greybus/gpio.c
index 8a7cf1d0e968..d729b922a750 100644
--- a/drivers/staging/greybus/gpio.c
+++ b/drivers/staging/greybus/gpio.c
@@ -43,7 +43,11 @@ struct gb_gpio_controller {
 };
 #define gpio_chip_to_gb_gpio_controller(chip) \
 	container_of(chip, struct gb_gpio_controller, chip)
-#define irq_data_to_gpio_chip(d) (d->domain->host_data)
+
+static struct gpio_chip *irq_data_to_gpio_chip(struct irq_data *d)
+{
+	return d->domain->host_data;
+}
 
 static int gb_gpio_line_count_operation(struct gb_gpio_controller *ggc)
 {
diff --git a/drivers/staging/greybus/usb.c b/drivers/staging/greybus/usb.c
index 8e9d9d59a357..b7badf87a3f0 100644
--- a/drivers/staging/greybus/usb.c
+++ b/drivers/staging/greybus/usb.c
@@ -27,7 +27,7 @@ struct gb_usb_hub_control_request {
 };
 
 struct gb_usb_hub_control_response {
-	u8 buf[0];
+	DECLARE_FLEX_ARRAY(u8, buf);
 };
 
 struct gb_usb_device {
diff --git a/drivers/staging/ks7010/ks_wlan_net.c b/drivers/staging/ks7010/ks_wlan_net.c
index 044c807ca022..e03c87f0bfe7 100644
--- a/drivers/staging/ks7010/ks_wlan_net.c
+++ b/drivers/staging/ks7010/ks_wlan_net.c
@@ -382,8 +382,7 @@ static int ks_wlan_get_nick(struct net_device *dev,
 		return -EPERM;
 
 	/* for SLEEP MODE */
-	strncpy(extra, priv->nick, 16);
-	extra[16] = '\0';
+	strscpy(extra, priv->nick, 17);
 	dwrq->data.length = strlen(extra) + 1;
 
 	return 0;
diff --git a/drivers/staging/pi433/TODO b/drivers/staging/pi433/TODO
index 5cf3fd99d521..23c808fc99de 100644
--- a/drivers/staging/pi433/TODO
+++ b/drivers/staging/pi433/TODO
@@ -3,3 +3,6 @@
 * Some missing data (marked with ###) needs to be added in the documentation
 * Change (struct pi433_tx_cfg)->bit_rate to be a u32 so that we can support
     bit rates up to 300kbps per the spec.
+  -> This configuration needs to be moved to sysfs instead of being done through
+     IOCTL. Going forward, we need to port userspace tools to use sysfs instead
+     of IOCTL and then we would delete IOCTL.
diff --git a/drivers/staging/pi433/pi433_if.c b/drivers/staging/pi433/pi433_if.c
index d4e06a3929f3..b59f6a4cb611 100644
--- a/drivers/staging/pi433/pi433_if.c
+++ b/drivers/staging/pi433/pi433_if.c
@@ -55,6 +55,7 @@
 static dev_t pi433_dev;
 static DEFINE_IDR(pi433_idr);
 static DEFINE_MUTEX(minor_lock); /* Protect idr accesses */
+static struct dentry *root_dir;	/* debugfs root directory for the driver */
 
 static struct class *pi433_class; /* mainly for udev to create /dev/pi433 */
 
@@ -1306,8 +1307,7 @@ static int pi433_probe(struct spi_device *spi)
 	/* spi setup */
 	spi_set_drvdata(spi, device);
 
-	entry = debugfs_create_dir(dev_name(device->dev),
-				   debugfs_lookup(KBUILD_MODNAME, NULL));
+	entry = debugfs_create_dir(dev_name(device->dev), root_dir);
 	debugfs_create_file("regs", 0400, entry, device, &pi433_debugfs_regs_fops);
 
 	return 0;
@@ -1333,9 +1333,8 @@ RX_failed:
 static void pi433_remove(struct spi_device *spi)
 {
 	struct pi433_device	*device = spi_get_drvdata(spi);
-	struct dentry *mod_entry = debugfs_lookup(KBUILD_MODNAME, NULL);
 
-	debugfs_remove(debugfs_lookup(dev_name(device->dev), mod_entry));
+	debugfs_lookup_and_remove(dev_name(device->dev), root_dir);
 
 	/* free GPIOs */
 	free_gpio(device);
@@ -1408,7 +1407,7 @@ static int __init pi433_init(void)
 		return PTR_ERR(pi433_class);
 	}
 
-	debugfs_create_dir(KBUILD_MODNAME, NULL);
+	root_dir = debugfs_create_dir(KBUILD_MODNAME, NULL);
 
 	status = spi_register_driver(&pi433_spi_driver);
 	if (status < 0) {
@@ -1427,7 +1426,7 @@ static void __exit pi433_exit(void)
 	spi_unregister_driver(&pi433_spi_driver);
 	class_destroy(pi433_class);
 	unregister_chrdev(MAJOR(pi433_dev), pi433_spi_driver.driver.name);
-	debugfs_remove_recursive(debugfs_lookup(KBUILD_MODNAME, NULL));
+	debugfs_remove(root_dir);
 }
 module_exit(pi433_exit);
 
diff --git a/drivers/staging/r8188eu/core/rtw_cmd.c b/drivers/staging/r8188eu/core/rtw_cmd.c
index 19b2f73d481d..ca9e3d4ee7f4 100644
--- a/drivers/staging/r8188eu/core/rtw_cmd.c
+++ b/drivers/staging/r8188eu/core/rtw_cmd.c
@@ -28,32 +28,6 @@ void rtw_free_evt_priv(struct	evt_priv *pevtpriv)
 	}
 }
 
-/* Calling Context:
- *
- * rtw_enqueue_cmd can only be called between kernel thread,
- * since only spin_lock is used.
- *
- * ISR/Call-Back functions can't call this sub-function.
- */
-
-static int _rtw_enqueue_cmd(struct __queue *queue, struct cmd_obj *obj)
-{
-	unsigned long flags;
-
-	if (!obj)
-		goto exit;
-
-	spin_lock_irqsave(&queue->lock, flags);
-
-	list_add_tail(&obj->list, &queue->queue);
-
-	spin_unlock_irqrestore(&queue->lock, flags);
-
-exit:
-
-	return _SUCCESS;
-}
-
 int rtw_init_cmd_priv(struct cmd_priv *pcmdpriv)
 {
 	init_completion(&pcmdpriv->enqueue_cmd);
@@ -65,8 +39,6 @@ int rtw_init_cmd_priv(struct cmd_priv *pcmdpriv)
 
 	/* allocate DMA-able/Non-Page memory for cmd_buf and rsp_buf */
 
-	pcmdpriv->cmd_seq = 1;
-
 	pcmdpriv->cmd_allocated_buf = kzalloc(MAX_CMDSZ + CMDBUFF_ALIGN_SZ,
 					      GFP_KERNEL);
 
@@ -127,28 +99,25 @@ static int rtw_cmd_filter(struct cmd_priv *pcmdpriv, struct cmd_obj *cmd_obj)
 
 u32 rtw_enqueue_cmd(struct cmd_priv *pcmdpriv, struct cmd_obj *cmd_obj)
 {
-	int res = _FAIL;
+	unsigned long flags;
 	struct adapter *padapter = pcmdpriv->padapter;
 
 	if (!cmd_obj)
-		goto exit;
+		return _FAIL;
 
 	cmd_obj->padapter = padapter;
 
-	res = rtw_cmd_filter(pcmdpriv, cmd_obj);
-	if (res == _FAIL) {
+	if (rtw_cmd_filter(pcmdpriv, cmd_obj) == _FAIL) {
 		rtw_free_cmd_obj(cmd_obj);
-		goto exit;
+		return _FAIL;
 	}
 
-	res = _rtw_enqueue_cmd(&pcmdpriv->cmd_queue, cmd_obj);
-
-	if (res == _SUCCESS)
-		complete(&pcmdpriv->enqueue_cmd);
-
-exit:
+	spin_lock_irqsave(&pcmdpriv->cmd_queue.lock, flags);
+	list_add_tail(&cmd_obj->list, &pcmdpriv->cmd_queue.queue);
+	spin_unlock_irqrestore(&pcmdpriv->cmd_queue.lock, flags);
 
-	return res;
+	complete(&pcmdpriv->enqueue_cmd);
+	return _SUCCESS;
 }
 
 struct	cmd_obj	*rtw_dequeue_cmd(struct cmd_priv *pcmdpriv)
@@ -233,8 +202,6 @@ _next:
 				ret = cmd_hdl(pcmd->padapter, pcmdbuf);
 				pcmd->res = ret;
 			}
-
-			pcmdpriv->cmd_seq++;
 		} else {
 			pcmd->res = H2C_PARAMETERS_ERROR;
 		}
@@ -1201,24 +1168,20 @@ static void rtw_chk_hi_queue_hdl(struct adapter *padapter)
 	}
 }
 
-u8 rtw_chk_hi_queue_cmd(struct adapter *padapter)
+void rtw_chk_hi_queue_cmd(struct adapter *padapter)
 {
 	struct cmd_obj	*ph2c;
 	struct drvextra_cmd_parm	*pdrvextra_cmd_parm;
 	struct cmd_priv	*pcmdpriv = &padapter->cmdpriv;
-	u8	res = _SUCCESS;
 
 	ph2c = kzalloc(sizeof(*ph2c), GFP_ATOMIC);
-	if (!ph2c) {
-		res = _FAIL;
-		goto exit;
-	}
+	if (!ph2c)
+		return;
 
 	pdrvextra_cmd_parm = kzalloc(sizeof(*pdrvextra_cmd_parm), GFP_ATOMIC);
 	if (!pdrvextra_cmd_parm) {
 		kfree(ph2c);
-		res = _FAIL;
-		goto exit;
+		return;
 	}
 
 	pdrvextra_cmd_parm->ec_id = CHECK_HIQ_WK_CID;
@@ -1227,9 +1190,7 @@ u8 rtw_chk_hi_queue_cmd(struct adapter *padapter)
 
 	init_h2fwcmd_w_parm_no_rsp(ph2c, pdrvextra_cmd_parm, GEN_CMD_CODE(_Set_Drv_Extra));
 
-	res = rtw_enqueue_cmd(pcmdpriv, ph2c);
-exit:
-	return res;
+	rtw_enqueue_cmd(pcmdpriv, ph2c);
 }
 
 u8 rtw_c2h_wk_cmd(struct adapter *padapter, u8 *c2h_evt)
diff --git a/drivers/staging/r8188eu/core/rtw_fw.c b/drivers/staging/r8188eu/core/rtw_fw.c
index 682c65b1e04c..1e4baf74ecd5 100644
--- a/drivers/staging/r8188eu/core/rtw_fw.c
+++ b/drivers/staging/r8188eu/core/rtw_fw.c
@@ -89,9 +89,8 @@ static int block_write(struct adapter *padapter, u8 *buffer, u32 size)
 		addr = FW_8188E_START_ADDRESS + i * block_size;
 		data = buffer + i * block_size;
 
-		ret = rtw_writeN(padapter, addr, block_size, data);
-		if (ret == _FAIL)
-			goto exit;
+		if (rtw_writeN(padapter, addr, block_size, data))
+			return _FAIL;
 	}
 
 	if (remain) {
@@ -105,9 +104,8 @@ static int block_write(struct adapter *padapter, u8 *buffer, u32 size)
 			addr = FW_8188E_START_ADDRESS + offset + i * block_size;
 			data = buffer + offset + i * block_size;
 
-			ret = rtw_writeN(padapter, addr, block_size, data);
-			if (ret == _FAIL)
-				goto exit;
+			if (rtw_writeN(padapter, addr, block_size, data))
+				return _FAIL;
 		}
 	}
 
diff --git a/drivers/staging/r8188eu/core/rtw_mlme.c b/drivers/staging/r8188eu/core/rtw_mlme.c
index b272123626ac..fb7d0e161fdd 100644
--- a/drivers/staging/r8188eu/core/rtw_mlme.c
+++ b/drivers/staging/r8188eu/core/rtw_mlme.c
@@ -444,8 +444,6 @@ static void update_current_network(struct adapter *adapter, struct wlan_bssid_ex
 	if (check_fwstate(pmlmepriv, _FW_LINKED) &&
 	    is_same_network(&pmlmepriv->cur_network.network, pnetwork)) {
 		update_network(&pmlmepriv->cur_network.network, pnetwork, adapter, true);
-		rtw_update_protection(adapter, (pmlmepriv->cur_network.network.IEs) + sizeof(struct ndis_802_11_fixed_ie),
-				      pmlmepriv->cur_network.network.IELength);
 	}
 
 }
@@ -1027,9 +1025,6 @@ static void rtw_joinbss_update_network(struct adapter *padapter, struct wlan_net
 		break;
 	}
 
-	rtw_update_protection(padapter, (cur_network->network.IEs) +
-			      sizeof(struct ndis_802_11_fixed_ie),
-			      (cur_network->network.IELength));
 	rtw_update_ht_cap(padapter, cur_network->network.IEs, cur_network->network.IELength);
 }
 
diff --git a/drivers/staging/r8188eu/core/rtw_mlme_ext.c b/drivers/staging/r8188eu/core/rtw_mlme_ext.c
index 1b9cf7596a76..dc181e491b34 100644
--- a/drivers/staging/r8188eu/core/rtw_mlme_ext.c
+++ b/drivers/staging/r8188eu/core/rtw_mlme_ext.c
@@ -3735,35 +3735,18 @@ static unsigned int on_action_public_p2p(struct recv_frame *precv_frame)
 	return _SUCCESS;
 }
 
-static void on_action_public_vendor(struct recv_frame *precv_frame)
-{
-	u8 *pframe = precv_frame->rx_data;
-	u8