From: Martin Kepplinger <martink@posteo.de>
Date: Tue, 6 May 2014 05:58:39 +0000 (+0200)
Subject: staging: vt6656: make spin_lock_irq() human readable
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=ea9a8dae5acca2e2ac0421279de7818e92e4b251;p=linux-beck.git

staging: vt6656: make spin_lock_irq() human readable

Don't require FIRMWAREbDownload() to, first off, unlock a held lock.
Thus do all locking in main_usb.c and hold it for a insignificantly
shorter period of time. This makes the affected area significantly more
readable though.

Signed-off-by: Martin Kepplinger <martink@posteo.de>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/vt6656/firmware.c b/drivers/staging/vt6656/firmware.c
index 15c1e861c84b..afb79c66a933 100644
--- a/drivers/staging/vt6656/firmware.c
+++ b/drivers/staging/vt6656/firmware.c
@@ -55,7 +55,6 @@ int FIRMWAREbDownload(struct vnt_private *pDevice) __must_hold(&pDevice->lock)
 	int ii, rc;
 
 	DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---->Download firmware\n");
-	spin_unlock_irq(&pDevice->lock);
 
 	rc = request_firmware(&fw, FIRMWARE_NAME, dev);
 	if (rc) {
@@ -92,7 +91,6 @@ free_fw:
 out:
 	kfree(pBuffer);
 
-	spin_lock_irq(&pDevice->lock);
 	return result;
 }
 MODULE_FIRMWARE(FIRMWARE_NAME);
diff --git a/drivers/staging/vt6656/main_usb.c b/drivers/staging/vt6656/main_usb.c
index 3c9323069e01..1dc02c4abbed 100644
--- a/drivers/staging/vt6656/main_usb.c
+++ b/drivers/staging/vt6656/main_usb.c
@@ -319,7 +319,11 @@ static int device_init_registers(struct vnt_private *pDevice)
 	memcpy(pDevice->abySNAP_Bridgetunnel, abySNAP_Bridgetunnel, ETH_ALEN);
 
 	if (!FIRMWAREbCheckVersion(pDevice)) {
+
+		spin_unlock_irq(&pDevice->lock);
 		if (FIRMWAREbDownload(pDevice) == true) {
+
+			spin_lock_irq(&pDevice->lock);
 			if (FIRMWAREbBrach2Sram(pDevice) == false) {
 				DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO
 					" FIRMWAREbBrach2Sram fail\n");
@@ -329,7 +333,6 @@ static int device_init_registers(struct vnt_private *pDevice)
 		} else {
 			DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO
 				" FIRMWAREbDownload fail\n");
-			spin_unlock_irq(&pDevice->lock);
 			return false;
 		}
 	}