---

yaml
---
r: 73829
b: refs/heads/master
c: 907135a
h: refs/heads/master
i:
  73827: 17157c0
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 279e1dab949d33737557babfe9f74e0b74fbe39a
+refs/heads/master: 907135aaa0cc120a347222c8f274ecc5ca0db641

trunk/arch/avr32/Kconfig

@@ -19,6 +19,9 @@ config AVR32
 	  There is an AVR32 Linux project with a web page at
 	  http://avr32linux.org/.
 
+config UID16
+	bool
+
 config GENERIC_GPIO
 	bool
 	default y

trunk/arch/avr32/mach-at32ap/at32ap7000.c

@@ -474,7 +474,7 @@ static struct resource at32ap700x_rtc0_resource[] = {
 static struct resource at32_wdt0_resource[] = {
 	{
 		.start	= 0xfff000b0,
-		.end	= 0xfff000cf,
+		.end	= 0xfff000bf,
 		.flags	= IORESOURCE_MEM,
 	},
 };
@@ -690,7 +690,7 @@ static struct resource atmel_usart0_resource[] = {
 	IRQ(6),
 };
 DEFINE_DEV_DATA(atmel_usart, 0);
-DEV_CLK(usart, atmel_usart0, pba, 3);
+DEV_CLK(usart, atmel_usart0, pba, 4);
 
 static struct atmel_uart_data atmel_usart1_data = {
 	.use_dma_tx	= 1,

trunk/arch/avr32/mach-at32ap/hsmc.c

@@ -7,6 +7,7 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
+#define DEBUG
 #include <linux/clk.h>
 #include <linux/err.h>
 #include <linux/init.h>

trunk/arch/avr32/mach-at32ap/intc.c

@@ -13,7 +13,6 @@
 #include <linux/irq.h>
 #include <linux/platform_device.h>
 
-#include <asm/intc.h>
 #include <asm/io.h>
 
 #include "intc.h"
@@ -137,8 +136,7 @@ void __init init_IRQ(void)
 	panic("Interrupt controller initialization failed!\n");
 }
 
-unsigned long intc_get_pending(unsigned int group)
+unsigned long intc_get_pending(int group)
 {
 	return intc_readl(&intc0, INTREQ0 + 4 * group);
 }
-EXPORT_SYMBOL_GPL(intc_get_pending);

trunk/drivers/i2c/i2c-dev.c

@@ -38,6 +38,15 @@
 
 static struct i2c_driver i2cdev_driver;
 
+/*
+ * An i2c_dev represents an i2c_adapter ... an I2C or SMBus master, not a
+ * slave (i2c_client) with which messages will be exchanged.  It's coupled
+ * with a character special file which is accessed by user mode drivers.
+ *
+ * The list of i2c_dev structures is parallel to the i2c_adapter lists
+ * maintained by the driver model, and is updated using notifications
+ * delivered to the i2cdev_driver.
+ */
 struct i2c_dev {
 	struct list_head list;
 	struct i2c_adapter *adap;
@@ -103,6 +112,25 @@ static ssize_t show_adapter_name(struct device *dev,
 }
 static DEVICE_ATTR(name, S_IRUGO, show_adapter_name, NULL);
 
+/* ------------------------------------------------------------------------- */
+
+/*
+ * After opening an instance of this character special file, a file
+ * descriptor starts out associated only with an i2c_adapter (and bus).
+ *
+ * Using the I2C_RDWR ioctl(), you can then *immediately* issue i2c_msg
+ * traffic to any devices on the bus used by that adapter.  That's because
+ * the i2c_msg vectors embed all the addressing information they need, and
+ * are submitted directly to an i2c_adapter.  However, SMBus-only adapters
+ * don't support that interface.
+ *
+ * To use read()/write() system calls on that file descriptor, or to use
+ * SMBus interfaces (and work with SMBus-only hosts!), you must first issue
+ * an I2C_SLAVE (or I2C_SLAVE_FORCE) ioctl.  That configures an anonymous
+ * (never registered) i2c_client so it holds the addressing information
+ * needed by those system calls and by this SMBus interface.
+ */
+
 static ssize_t i2cdev_read (struct file *file, char __user *buf, size_t count,
                             loff_t *offset)
 {
@@ -172,6 +200,16 @@ static int i2cdev_ioctl(struct inode *inode, struct file *file,
 	switch ( cmd ) {
 	case I2C_SLAVE:
 	case I2C_SLAVE_FORCE:
+		/* NOTE:  devices set up to work with "new style" drivers
+		 * can't use I2C_SLAVE, even when the device node is not
+		 * bound to a driver.  Only I2C_SLAVE_FORCE will work.
+		 *
+		 * Setting the PEC flag here won't affect kernel drivers,
+		 * which will be using the i2c_client node registered with
+		 * the driver model core.  Likewise, when that client has
+		 * the PEC flag already set, the i2c-dev driver won't see
+		 * (or use) this setting.
+		 */
 		if ((arg > 0x3ff) ||
 		    (((client->flags & I2C_M_TEN) == 0) && arg > 0x7f))
 			return -EINVAL;
@@ -386,6 +424,13 @@ static int i2cdev_open(struct inode *inode, struct file *file)
 	if (!adap)
 		return -ENODEV;
 
+	/* This creates an anonymous i2c_client, which may later be
+	 * pointed to some address using I2C_SLAVE or I2C_SLAVE_FORCE.
+	 *
+	 * This client is ** NEVER REGISTERED ** with the driver model
+	 * or I2C core code!!  It just holds private copies of addressing
+	 * information and maybe a PEC flag.
+	 */
 	client = kzalloc(sizeof(*client), GFP_KERNEL);
 	if (!client) {
 		i2c_put_adapter(adap);
@@ -394,7 +439,6 @@ static int i2cdev_open(struct inode *inode, struct file *file)
 	snprintf(client->name, I2C_NAME_SIZE, "i2c-dev %d", adap->nr);
 	client->driver = &i2cdev_driver;
 
-	/* registered with adapter, passed as client to user */
 	client->adapter = adap;
 	file->private_data = client;
 
@@ -422,6 +466,14 @@ static const struct file_operations i2cdev_fops = {
 	.release	= i2cdev_release,
 };
 
+/* ------------------------------------------------------------------------- */
+
+/*
+ * The legacy "i2cdev_driver" is used primarily to get notifications when
+ * I2C adapters are added or removed, so that each one gets an i2c_dev
+ * and is thus made available to userspace driver code.
+ */
+
 static struct class *i2c_dev_class;
 
 static int i2cdev_attach_adapter(struct i2c_adapter *adap)
@@ -486,6 +538,12 @@ static struct i2c_driver i2cdev_driver = {
 	.detach_client	= i2cdev_detach_client,
 };
 
+/* ------------------------------------------------------------------------- */
+
+/*
+ * module load/unload record keeping
+ */
+
 static int __init i2c_dev_init(void)
 {
 	int res;

trunk/drivers/net/skge.c

@@ -2512,32 +2512,31 @@ static int skge_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 	return err;
 }
 
-static void skge_ramset(struct skge_hw *hw, u16 q, u32 start, size_t len)
+/* Assign Ram Buffer allocation to queue */
+static void skge_ramset(struct skge_hw *hw, u16 q, u32 start, u32 space)
 {
 	u32 end;
 
-	start /= 8;
-	len /= 8;
-	end = start + len - 1;
+	/* convert from K bytes to qwords used for hw register */
+	start *= 1024/8;
+	space *= 1024/8;
+	end = start + space - 1;
 
 	skge_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
 	skge_write32(hw, RB_ADDR(q, RB_START), start);
+	skge_write32(hw, RB_ADDR(q, RB_END), end);
 	skge_write32(hw, RB_ADDR(q, RB_WP), start);
 	skge_write32(hw, RB_ADDR(q, RB_RP), start);
-	skge_write32(hw, RB_ADDR(q, RB_END), end);
 
 	if (q == Q_R1 || q == Q_R2) {
+		u32 tp = space - space/4;
+
 		/* Set thresholds on receive queue's */
-		skge_write32(hw, RB_ADDR(q, RB_RX_UTPP),
-			     start + (2*len)/3);
-		skge_write32(hw, RB_ADDR(q, RB_RX_LTPP),
-			     start + (len/3));
-	} else {
-		/* Enable store & forward on Tx queue's because
-		 * Tx FIFO is only 4K on Genesis and 1K on Yukon
-		 */
+		skge_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp);
+		skge_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4);
+	} else if (hw->chip_id != CHIP_ID_GENESIS)
+		/* Genesis Tx Fifo is too small for normal store/forward */
 		skge_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
-	}
 
 	skge_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
 }
@@ -2565,7 +2564,7 @@ static int skge_up(struct net_device *dev)
 	struct skge_port *skge = netdev_priv(dev);
 	struct skge_hw *hw = skge->hw;
 	int port = skge->port;
-	u32 chunk, ram_addr;
+	u32 ramaddr, ramsize, rxspace;
 	size_t rx_size, tx_size;
 	int err;
 
@@ -2620,14 +2619,15 @@ static int skge_up(struct net_device *dev)
 	spin_unlock_bh(&hw->phy_lock);
 
 	/* Configure RAMbuffers */
-	chunk = hw->ram_size / ((hw->ports + 1)*2);
-	ram_addr = hw->ram_offset + 2 * chunk * port;
+	ramsize = (hw->ram_size - hw->ram_offset) / hw->ports;
+	ramaddr = hw->ram_offset + port * ramsize;
+	rxspace = 8 + (2*(ramsize - 16))/3;
 
-	skge_ramset(hw, rxqaddr[port], ram_addr, chunk);
-	skge_qset(skge, rxqaddr[port], skge->rx_ring.to_clean);
+	skge_ramset(hw, rxqaddr[port], ramaddr, rxspace);
+	skge_ramset(hw, txqaddr[port], ramaddr + rxspace, ramsize - rxspace);
 
+	skge_qset(skge, rxqaddr[port], skge->rx_ring.to_clean);
 	BUG_ON(skge->tx_ring.to_use != skge->tx_ring.to_clean);
-	skge_ramset(hw, txqaddr[port], ram_addr+chunk, chunk);
 	skge_qset(skge, txqaddr[port], skge->tx_ring.to_use);
 
 	/* Start receiver BMU */
@@ -3591,15 +3591,12 @@ static int skge_reset(struct skge_hw *hw)
 	if (hw->chip_id == CHIP_ID_GENESIS) {
 		if (t8 == 3) {
 			/* special case: 4 x 64k x 36, offset = 0x80000 */
-			hw->ram_size = 0x100000;
-			hw->ram_offset = 0x80000;
+			hw->ram_size = 1024;
+			hw->ram_offset = 512;
 		} else
 			hw->ram_size = t8 * 512;
-	}
-	else if (t8 == 0)
-		hw->ram_size = 0x20000;
-	else
-		hw->ram_size = t8 * 4096;
+	} else /* Yukon */
+		hw->ram_size = t8 ? t8 * 4 : 128;
 
 	hw->intr_mask = IS_HW_ERR;
 

trunk/include/asm-avr32/sysreg.h

@@ -215,8 +215,6 @@
 #define SYSREG_IRP_SIZE				6
 
 /* Bitfields in PCCR */
-#define SYSREG_PCCR_E_OFFSET			0
-#define SYSREG_PCCR_E_SIZE			1
 #define SYSREG_PCCR_R_OFFSET			1
 #define SYSREG_PCCR_R_SIZE			1
 #define SYSREG_PCCR_C_OFFSET			2

trunk/include/pcmcia/cs_types.h

@@ -21,7 +21,7 @@
 #include <sys/types.h>
 #endif
 
-#if defined(__arm__) || defined(__mips__) || defined(__avr32__)
+#if defined(__arm__) || defined(__mips__)
 /* This (ioaddr_t) is exposed to userspace & hence cannot be changed. */
 typedef u_int   ioaddr_t;
 #else

trunk/kernel/exit.c

@@ -1386,7 +1386,8 @@ static int wait_task_stopped(struct task_struct *p, int delayed_group_leader,
 		int why = (p->ptrace & PT_PTRACED) ? CLD_TRAPPED : CLD_STOPPED;
 
 		exit_code = p->exit_code;
-		if (unlikely(!exit_code) || unlikely(p->exit_state))
+		if (unlikely(!exit_code) ||
+		    unlikely(p->state & TASK_TRACED))
 			goto bail_ref;
 		return wait_noreap_copyout(p, pid, uid,
 					   why, (exit_code << 8) | 0x7f,

trunk/mm/slob.c

@@ -321,8 +321,7 @@ static void *slob_alloc(size_t size, gfp_t gfp, int align, int node)
 		/* Improve fragment distribution and reduce our average
 		 * search time by starting our next search here. (see
 		 * Knuth vol 1, sec 2.5, pg 449) */
-		if (prev != free_slob_pages.prev &&
-				free_slob_pages.next != prev->next)
+		if (free_slob_pages.next != prev->next)
 			list_move_tail(&free_slob_pages, prev->next);
 		break;
 	}