Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (144 commits)
  powerpc/44x: Support 16K/64K base page sizes on 44x
  powerpc: Force memory size to be a multiple of PAGE_SIZE
  powerpc/32: Wire up the trampoline code for kdump
  powerpc/32: Add the ability for a classic ppc kernel to be loaded at 32M
  powerpc/32: Allow __ioremap on RAM addresses for kdump kernel
  powerpc/32: Setup OF properties for kdump
  powerpc/32/kdump: Implement crash_setup_regs() using ppc_save_regs()
  powerpc: Prepare xmon_save_regs for use with kdump
  powerpc: Remove default kexec/crash_kernel ops assignments
  powerpc: Make default kexec/crash_kernel ops implicit
  powerpc: Setup OF properties for ppc32 kexec
  powerpc/pseries: Fix cpu hotplug
  powerpc: Fix KVM build on ppc440
  powerpc/cell: add QPACE as a separate Cell platform
  powerpc/cell: fix build breakage with CONFIG_SPUFS disabled
  powerpc/mpc5200: fix error paths in PSC UART probe function
  powerpc/mpc5200: add rts/cts handling in PSC UART driver
  powerpc/mpc5200: Make PSC UART driver update serial errors counters
  powerpc/mpc5200: Remove obsolete code from mpc5200 MDIO driver
  powerpc/mpc5200: Add MDMA/UDMA support to MPC5200 ATA driver
  ...

Fix trivial conflict in drivers/char/Makefile as per Paul's directions

10 files changed, 174 insertions, 40 deletions

diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 8783457b93d3..c602b547cc6e 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -641,6 +641,12 @@ config HVC_XEN
         help
           Xen virtual console device driver
 
+config HVC_UDBG
+       bool "udbg based fake hypervisor console"
+       depends on PPC && EXPERIMENTAL
+       select HVC_DRIVER
+       default n
+
 config VIRTIO_CONSOLE
         tristate "Virtio console"
         depends on VIRTIO
diff --git a/drivers/char/Makefile b/drivers/char/Makefile
index 36151bae0d72..9caf5b5ad1c0 100644
--- a/drivers/char/Makefile
+++ b/drivers/char/Makefile
@@ -51,6 +51,7 @@ obj-$(CONFIG_HVC_DRIVER)	+= hvc_console.o
 obj-$(CONFIG_HVC_IRQ)           += hvc_irq.o
 obj-$(CONFIG_HVC_XEN)           += hvc_xen.o
 obj-$(CONFIG_HVC_IUCV)          += hvc_iucv.o
+obj-$(CONFIG_HVC_UDBG)          += hvc_udbg.o
 obj-$(CONFIG_VIRTIO_CONSOLE)    += virtio_console.o
 obj-$(CONFIG_RAW_DRIVER)        += raw.o
 obj-$(CONFIG_SGI_SNSC)          += snsc.o snsc_event.o
diff --git a/drivers/char/bsr.c b/drivers/char/bsr.c
index 456f54db73e2..977dfb1096a0 100644
--- a/drivers/char/bsr.c
+++ b/drivers/char/bsr.c
@@ -60,6 +60,8 @@ struct bsr_dev {
         unsigned bsr_num;      /* bsr id number for its type */
         int      bsr_minor;
 
+        struct list_head bsr_list;
+
         dev_t    bsr_dev;
         struct cdev bsr_cdev;
         struct device *bsr_device;
@@ -67,8 +69,8 @@ struct bsr_dev {
 
 };
 
-static unsigned num_bsr_devs;
-static struct bsr_dev *bsr_devs;
+static unsigned total_bsr_devs;
+static struct list_head bsr_devs = LIST_HEAD_INIT(bsr_devs);
 static struct class *bsr_class;
 static int bsr_major;
 
@@ -146,24 +148,25 @@ const static struct file_operations bsr_fops = {
 
 static void bsr_cleanup_devs(void)
 {
-        int i;
-        for (i=0 ; i < num_bsr_devs; i++) {
-                struct bsr_dev *cur = bsr_devs + i;
+        struct bsr_dev *cur, *n;
+
+        list_for_each_entry_safe(cur, n, &bsr_devs, bsr_list) {
                 if (cur->bsr_device) {
                         cdev_del(&cur->bsr_cdev);
                         device_del(cur->bsr_device);
                 }
+                list_del(&cur->bsr_list);
+                kfree(cur);
         }
-
-        kfree(bsr_devs);
 }
 
-static int bsr_create_devs(struct device_node *bn)
+static int bsr_add_node(struct device_node *bn)
 {
-        int bsr_stride_len, bsr_bytes_len;
+        int bsr_stride_len, bsr_bytes_len, num_bsr_devs;
         const u32 *bsr_stride;
         const u32 *bsr_bytes;
         unsigned i;
+        int ret = -ENODEV;
 
         bsr_stride = of_get_property(bn, "ibm,lock-stride", &bsr_stride_len);
         bsr_bytes  = of_get_property(bn, "ibm,#lock-bytes", &bsr_bytes_len);
@@ -171,35 +174,36 @@ static int bsr_create_devs(struct device_node *bn)
         if (!bsr_stride || !bsr_bytes ||
             (bsr_stride_len != bsr_bytes_len)) {
                 printk(KERN_ERR "bsr of-node has missing/incorrect property\n");
-                return -ENODEV;
+                return ret;
         }
 
         num_bsr_devs = bsr_bytes_len / sizeof(u32);
 
-        /* only a warning, its informational since we'll fail and exit */
-        WARN_ON(num_bsr_devs > BSR_MAX_DEVS);
-
-        bsr_devs = kzalloc(sizeof(struct bsr_dev) * num_bsr_devs, GFP_KERNEL);
-        if (!bsr_devs)
-                return -ENOMEM;
-
         for (i = 0 ; i < num_bsr_devs; i++) {
-                struct bsr_dev *cur = bsr_devs + i;
+                struct bsr_dev *cur = kzalloc(sizeof(struct bsr_dev),
+                                              GFP_KERNEL);
                 struct resource res;
                 int result;
 
+                if (!cur) {
+                        printk(KERN_ERR "Unable to alloc bsr dev\n");
+                        ret = -ENOMEM;
+                        goto out_err;
+                }
+
                 result = of_address_to_resource(bn, i, &res);
                 if (result < 0) {
-                        printk(KERN_ERR "bsr of-node has invalid reg property\n");
-                        goto out_err;
+                        printk(KERN_ERR "bsr of-node has invalid reg property, skipping\n");
+                        kfree(cur);
+                        continue;
                 }
 
-                cur->bsr_minor  = i;
+                cur->bsr_minor  = i + total_bsr_devs;
                 cur->bsr_addr   = res.start;
                 cur->bsr_len    = res.end - res.start + 1;
                 cur->bsr_bytes  = bsr_bytes[i];
                 cur->bsr_stride = bsr_stride[i];
-                cur->bsr_dev    = MKDEV(bsr_major, i);
+                cur->bsr_dev    = MKDEV(bsr_major, i + total_bsr_devs);
 
                 switch(cur->bsr_bytes) {
                 case 8:
@@ -220,14 +224,15 @@ static int bsr_create_devs(struct device_node *bn)
                 }
 
                 cur->bsr_num = bsr_types[cur->bsr_type];
-                bsr_types[cur->bsr_type] = cur->bsr_num + 1;
                 snprintf(cur->bsr_name, 32, "bsr%d_%d",
                          cur->bsr_bytes, cur->bsr_num);
 
                 cdev_init(&cur->bsr_cdev, &bsr_fops);
                 result = cdev_add(&cur->bsr_cdev, cur->bsr_dev, 1);
-                if (result)
+                if (result) {
+                        kfree(cur);
                         goto out_err;
+                }
 
                 cur->bsr_device = device_create(bsr_class, NULL, cur->bsr_dev,
                                                 cur, cur->bsr_name);
@@ -235,16 +240,37 @@ static int bsr_create_devs(struct device_node *bn)
                         printk(KERN_ERR "device_create failed for %s\n",
                                cur->bsr_name);
                         cdev_del(&cur->bsr_cdev);
+                        kfree(cur);
                         goto out_err;
                 }
+
+                bsr_types[cur->bsr_type] = cur->bsr_num + 1;
+                list_add_tail(&cur->bsr_list, &bsr_devs);
         }
 
+        total_bsr_devs += num_bsr_devs;
+
         return 0;
 
  out_err:
 
         bsr_cleanup_devs();
-        return -ENODEV;
+        return ret;
+}
+
+static int bsr_create_devs(struct device_node *bn)
+{
+        int ret;
+
+        while (bn) {
+                ret = bsr_add_node(bn);
+                if (ret) {
+                        of_node_put(bn);
+                        return ret;
+                }
+                bn = of_find_compatible_node(bn, NULL, "ibm,bsr");
+        }
+        return 0;
 }
 
 static int __init bsr_init(void)
@@ -254,7 +280,7 @@ static int __init bsr_init(void)
         int ret = -ENODEV;
         int result;
 
-        np = of_find_compatible_node(NULL, "ibm,bsr", "ibm,bsr");
+        np = of_find_compatible_node(NULL, NULL, "ibm,bsr");
         if (!np)
                 goto out_err;
 
@@ -272,10 +298,10 @@ static int __init bsr_init(void)
                 goto out_err_2;
         }
 
-        if ((ret = bsr_create_devs(np)) < 0)
+        if ((ret = bsr_create_devs(np)) < 0) {
+                np = NULL;
                 goto out_err_3;
-
-        of_node_put(np);
+        }
 
         return 0;
 
diff --git a/drivers/char/hvc_console.c b/drivers/char/hvc_console.c
index 5b819b12675a..fb57f67bb427 100644
--- a/drivers/char/hvc_console.c
+++ b/drivers/char/hvc_console.c
@@ -642,8 +642,11 @@ int hvc_poll(struct hvc_struct *hp)
                                 /* Handle the SysRq Hack */
                                 /* XXX should support a sequence */
                                 if (buf[i] == '\x0f') { /* ^O */
-                                        sysrq_pressed = 1;
-                                        continue;
+                                        /* if ^O is pressed again, reset
+                                         * sysrq_pressed and flip ^O char */
+                                        sysrq_pressed = !sysrq_pressed;
+                                        if (sysrq_pressed)
+                                                continue;
                                 } else if (sysrq_pressed) {
                                         handle_sysrq(buf[i], tty);
                                         sysrq_pressed = 0;
@@ -689,10 +692,8 @@ EXPORT_SYMBOL_GPL(hvc_poll);
  */
 void hvc_resize(struct hvc_struct *hp, struct winsize ws)
 {
-        if ((hp->ws.ws_row != ws.ws_row) || (hp->ws.ws_col != ws.ws_col)) {
-                hp->ws = ws;
-                schedule_work(&hp->tty_resize);
-        }
+        hp->ws = ws;
+        schedule_work(&hp->tty_resize);
 }
 
 /*
diff --git a/drivers/char/hvc_console.h b/drivers/char/hvc_console.h
index 8297dbc2e6ec..3c85d78c975c 100644
--- a/drivers/char/hvc_console.h
+++ b/drivers/char/hvc_console.h
@@ -48,7 +48,7 @@ struct hvc_struct {
         spinlock_t lock;
         int index;
         struct tty_struct *tty;
-        unsigned int count;
+        int count;
         int do_wakeup;
         char *outbuf;
         int outbuf_size;
diff --git a/drivers/char/hvc_iseries.c b/drivers/char/hvc_iseries.c
index b74a2f8ab908..449727b6166d 100644
--- a/drivers/char/hvc_iseries.c
+++ b/drivers/char/hvc_iseries.c
@@ -575,8 +575,10 @@ static int __init hvc_find_vtys(void)
                  * of console adapters.
                  */
                 if ((num_found >= MAX_NR_HVC_CONSOLES) ||
-                                (num_found >= VTTY_PORTS))
+                                (num_found >= VTTY_PORTS)) {
+                        of_node_put(vty);
                         break;
+                }
 
                 vtermno = of_get_property(vty, "reg", NULL);
                 if (!vtermno)
diff --git a/drivers/char/hvc_udbg.c b/drivers/char/hvc_udbg.c
new file mode 100644
index 000000000000..bd63ba878a56
--- /dev/null
+++ b/drivers/char/hvc_udbg.c
@@ -0,0 +1,96 @@
+/*
+ * udbg interface to hvc_console.c
+ *
+ * (C) Copyright David Gibson, IBM Corporation 2008.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ */
+
+#include <linux/console.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/moduleparam.h>
+#include <linux/types.h>
+#include <linux/irq.h>
+
+#include <asm/udbg.h>
+
+#include "hvc_console.h"
+
+struct hvc_struct *hvc_udbg_dev;
+
+static int hvc_udbg_put(uint32_t vtermno, const char *buf, int count)
+{
+        int i;
+
+        for (i = 0; i < count; i++)
+                udbg_putc(buf[i]);
+
+        return i;
+}
+
+static int hvc_udbg_get(uint32_t vtermno, char *buf, int count)
+{
+        int i, c;
+
+        if (!udbg_getc_poll)
+                return 0;
+
+        for (i = 0; i < count; i++) {
+                if ((c = udbg_getc_poll()) == -1)
+                        break;
+                buf[i] = c;
+        }
+
+        return i;
+}
+
+static struct hv_ops hvc_udbg_ops = {
+        .get_chars = hvc_udbg_get,
+        .put_chars = hvc_udbg_put,
+};
+
+static int __init hvc_udbg_init(void)
+{
+        struct hvc_struct *hp;
+
+        BUG_ON(hvc_udbg_dev);
+
+        hp = hvc_alloc(0, NO_IRQ, &hvc_udbg_ops, 16);
+        if (IS_ERR(hp))
+                return PTR_ERR(hp);
+
+        hvc_udbg_dev = hp;
+
+        return 0;
+}
+module_init(hvc_udbg_init);
+
+static void __exit hvc_udbg_exit(void)
+{
+        if (hvc_udbg_dev)
+                hvc_remove(hvc_udbg_dev);
+}
+module_exit(hvc_udbg_exit);
+
+static int __init hvc_udbg_console_init(void)
+{
+        hvc_instantiate(0, 0, &hvc_udbg_ops);
+        add_preferred_console("hvc", 0, NULL);
+
+        return 0;
+}
+console_initcall(hvc_udbg_console_init);
diff --git a/drivers/char/hvc_vio.c b/drivers/char/hvc_vio.c
index 019e0b58593d..bd62dc86b47d 100644
--- a/drivers/char/hvc_vio.c
+++ b/drivers/char/hvc_vio.c
@@ -153,8 +153,10 @@ static int hvc_find_vtys(void)
                 /* We have statically defined space for only a certain number
                  * of console adapters.
                  */
-                if (num_found >= MAX_NR_HVC_CONSOLES)
+                if (num_found >= MAX_NR_HVC_CONSOLES) {
+                        of_node_put(vty);
                         break;
+                }
 
                 vtermno = of_get_property(vty, "reg", NULL);
                 if (!vtermno)
diff --git a/drivers/char/hvcs.c b/drivers/char/hvcs.c
index 473d9b14439a..6e6eb445d374 100644
--- a/drivers/char/hvcs.c
+++ b/drivers/char/hvcs.c
@@ -269,7 +269,7 @@ struct hvcs_struct {
         unsigned int index;
 
         struct tty_struct *tty;
-        unsigned int open_count;
+        int open_count;
 
         /*
          * Used to tell the driver kernel_thread what operations need to take
diff --git a/drivers/char/hvsi.c b/drivers/char/hvsi.c
index 59c6f9ab94e4..af055287271a 100644
--- a/drivers/char/hvsi.c
+++ b/drivers/char/hvsi.c
@@ -75,7 +75,7 @@ struct hvsi_struct {
         spinlock_t lock;
         int index;
         struct tty_struct *tty;
-        unsigned int count;
+        int count;
         uint8_t throttle_buf[128];
         uint8_t outbuf[N_OUTBUF]; /* to implement write_room and chars_in_buffer */
         /* inbuf is for packet reassembly. leave a little room for leftovers. */