6 files changed, 102 insertions, 54 deletions

diff --git a/drivers/char/agp/amd64-agp.c b/drivers/char/agp/amd64-agp.c
index 1afb8968a342..fd50ead59c79 100644
--- a/drivers/char/agp/amd64-agp.c
+++ b/drivers/char/agp/amd64-agp.c
@@ -729,9 +729,6 @@ int __init agp_amd64_init(void)
         if (agp_off)
                 return -EINVAL;
 
-        if (gart_iommu_aperture)
-                return agp_bridges_found ? 0 : -ENODEV;
-
         err = pci_register_driver(&agp_amd64_pci_driver);
         if (err < 0)
                 return err;
@@ -768,16 +765,27 @@ int __init agp_amd64_init(void)
         return err;
 }
 
+static int __init agp_amd64_mod_init(void)
+{
+#ifndef MODULE
+        if (gart_iommu_aperture)
+                return agp_bridges_found ? 0 : -ENODEV;
+#endif
+        return agp_amd64_init();
+}
+
 static void __exit agp_amd64_cleanup(void)
 {
+#ifndef MODULE
         if (gart_iommu_aperture)
                 return;
+#endif
         if (aperture_resource)
                 release_resource(aperture_resource);
         pci_unregister_driver(&agp_amd64_pci_driver);
 }
 
-module_init(agp_amd64_init);
+module_init(agp_amd64_mod_init);
 module_exit(agp_amd64_cleanup);
 
 MODULE_AUTHOR("Dave Jones <davej@redhat.com>, Andi Kleen");
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index be832b6f8279..48788db4e280 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -395,6 +395,7 @@ static ssize_t read_kmem(struct file *file, char __user *buf,
         unsigned long p = *ppos;
         ssize_t low_count, read, sz;
         char * kbuf; /* k-addr because vread() takes vmlist_lock rwlock */
+        int err = 0;
 
         read = 0;
         if (p < (unsigned long) high_memory) {
@@ -441,12 +442,16 @@ static ssize_t read_kmem(struct file *file, char __user *buf,
                         return -ENOMEM;
                 while (count > 0) {
                         sz = size_inside_page(p, count);
+                        if (!is_vmalloc_or_module_addr((void *)p)) {
+                                err = -ENXIO;
+                                break;
+                        }
                         sz = vread(kbuf, (char *)p, sz);
                         if (!sz)
                                 break;
                         if (copy_to_user(buf, kbuf, sz)) {
-                                free_page((unsigned long)kbuf);
-                                return -EFAULT;
+                                err = -EFAULT;
+                                break;
                         }
                         count -= sz;
                         buf += sz;
@@ -455,8 +460,8 @@ static ssize_t read_kmem(struct file *file, char __user *buf,
                 }
                 free_page((unsigned long)kbuf);
         }
-        *ppos = p;
-        return read;
+        *ppos = p;
+        return read ? read : err;
 }
 
 
@@ -520,6 +525,7 @@ static ssize_t write_kmem(struct file * file, const char __user * buf,
         ssize_t wrote = 0;
         ssize_t virtr = 0;
         char * kbuf; /* k-addr because vwrite() takes vmlist_lock rwlock */
+        int err = 0;
 
         if (p < (unsigned long) high_memory) {
                 unsigned long to_write = min_t(unsigned long, count,
@@ -540,14 +546,16 @@ static ssize_t write_kmem(struct file * file, const char __user * buf,
                         unsigned long sz = size_inside_page(p, count);
                         unsigned long n;
 
+                        if (!is_vmalloc_or_module_addr((void *)p)) {
+                                err = -ENXIO;
+                                break;
+                        }
                         n = copy_from_user(kbuf, buf, sz);
                         if (n) {
-                                if (wrote + virtr)
-                                        break;
-                                free_page((unsigned long)kbuf);
-                                return -EFAULT;
+                                err = -EFAULT;
+                                break;
                         }
-                        sz = vwrite(kbuf, (char *)p, sz);
+                        vwrite(kbuf, (char *)p, sz);
                         count -= sz;
                         buf += sz;
                         virtr += sz;
@@ -556,8 +564,8 @@ static ssize_t write_kmem(struct file * file, const char __user * buf,
                 free_page((unsigned long)kbuf);
         }
 
-        *ppos = p;
-        return virtr + wrote;
+        *ppos = p;
+        return virtr + wrote ? : err;
 }
 #endif
 
diff --git a/drivers/char/random.c b/drivers/char/random.c
index 8258982b49ec..2849713d2231 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -1051,12 +1051,6 @@ random_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos)
                                 /* like a named pipe */
         }
 
-        /*
-         * If we gave the user some bytes, update the access time.
-         */
-        if (count)
-                file_accessed(file);
-
         return (count ? count : retval);
 }
 
@@ -1107,7 +1101,6 @@ static ssize_t random_write(struct file *file, const char __user *buffer,
                             size_t count, loff_t *ppos)
 {
         size_t ret;
-        struct inode *inode = file->f_path.dentry->d_inode;
 
         ret = write_pool(&blocking_pool, buffer, count);
         if (ret)
@@ -1116,8 +1109,6 @@ static ssize_t random_write(struct file *file, const char __user *buffer,
         if (ret)
                 return ret;
 
-        inode->i_mtime = current_fs_time(inode->i_sb);
-        mark_inode_dirty(inode);
         return (ssize_t)count;
 }
 
diff --git a/drivers/char/tpm/tpm_infineon.c b/drivers/char/tpm/tpm_infineon.c
index ecba4942fc8e..f58440791e65 100644
--- a/drivers/char/tpm/tpm_infineon.c
+++ b/drivers/char/tpm/tpm_infineon.c
@@ -39,12 +39,12 @@
 struct tpm_inf_dev {
         int iotype;
 
-        void __iomem *mem_base;         /* MMIO ioremap'd addr */
-        unsigned long map_base;         /* phys MMIO base */
-        unsigned long map_size;         /* MMIO region size */
-        unsigned int index_off;         /* index register offset */
+        void __iomem *mem_base; /* MMIO ioremap'd addr */
+        unsigned long map_base; /* phys MMIO base */
+        unsigned long map_size; /* MMIO region size */
+        unsigned int index_off; /* index register offset */
 
-        unsigned int data_regs;         /* Data registers */
+        unsigned int data_regs; /* Data registers */
         unsigned int data_size;
 
         unsigned int config_port;       /* IO Port config index reg */
@@ -406,14 +406,14 @@ static const struct tpm_vendor_specific tpm_inf = {
         .miscdev = {.fops = &inf_ops,},
 };
 
-static const struct pnp_device_id tpm_pnp_tbl[] = {
+static const struct pnp_device_id tpm_inf_pnp_tbl[] = {
         /* Infineon TPMs */
         {"IFX0101", 0},
         {"IFX0102", 0},
         {"", 0}
 };
 
-MODULE_DEVICE_TABLE(pnp, tpm_pnp_tbl);
+MODULE_DEVICE_TABLE(pnp, tpm_inf_pnp_tbl);
 
 static int __devinit tpm_inf_pnp_probe(struct pnp_dev *dev,
                                        const struct pnp_device_id *dev_id)
@@ -430,7 +430,7 @@ static int __devinit tpm_inf_pnp_probe(struct pnp_dev *dev,
         if (pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) &&
             !(pnp_port_flags(dev, 0) & IORESOURCE_DISABLED)) {
 
-                tpm_dev.iotype = TPM_INF_IO_PORT;
+                tpm_dev.iotype = TPM_INF_IO_PORT;
 
                 tpm_dev.config_port = pnp_port_start(dev, 0);
                 tpm_dev.config_size = pnp_port_len(dev, 0);
@@ -459,9 +459,9 @@ static int __devinit tpm_inf_pnp_probe(struct pnp_dev *dev,
                         goto err_last;
                 }
         } else if (pnp_mem_valid(dev, 0) &&
-                   !(pnp_mem_flags(dev, 0) & IORESOURCE_DISABLED)) {
+                   !(pnp_mem_flags(dev, 0) & IORESOURCE_DISABLED)) {
 
-                tpm_dev.iotype = TPM_INF_IO_MEM;
+                tpm_dev.iotype = TPM_INF_IO_MEM;
 
                 tpm_dev.map_base = pnp_mem_start(dev, 0);
                 tpm_dev.map_size = pnp_mem_len(dev, 0);
@@ -563,11 +563,11 @@ static int __devinit tpm_inf_pnp_probe(struct pnp_dev *dev,
                          "product id 0x%02x%02x"
                          "%s\n",
                          tpm_dev.iotype == TPM_INF_IO_PORT ?
-                                tpm_dev.config_port :
-                                tpm_dev.map_base + tpm_dev.index_off,
+                         tpm_dev.config_port :
+                         tpm_dev.map_base + tpm_dev.index_off,
                          tpm_dev.iotype == TPM_INF_IO_PORT ?
-                                tpm_dev.data_regs :
-                                tpm_dev.map_base + tpm_dev.data_regs,
+                         tpm_dev.data_regs :
+                         tpm_dev.map_base + tpm_dev.data_regs,
                          version[0], version[1],
                          vendorid[0], vendorid[1],
                          productid[0], productid[1], chipname);
@@ -607,20 +607,55 @@ static __devexit void tpm_inf_pnp_remove(struct pnp_dev *dev)
                         iounmap(tpm_dev.mem_base);
                         release_mem_region(tpm_dev.map_base, tpm_dev.map_size);
                 }
+                tpm_dev_vendor_release(chip);
                 tpm_remove_hardware(chip->dev);
         }
 }
 
+static int tpm_inf_pnp_suspend(struct pnp_dev *dev, pm_message_t pm_state)
+{
+        struct tpm_chip *chip = pnp_get_drvdata(dev);
+        int rc;
+        if (chip) {
+                u8 savestate[] = {
+                        0, 193, /* TPM_TAG_RQU_COMMAND */
+                        0, 0, 0, 10,    /* blob length (in bytes) */
+                        0, 0, 0, 152    /* TPM_ORD_SaveState */
+                };
+                dev_info(&dev->dev, "saving TPM state\n");
+                rc = tpm_inf_send(chip, savestate, sizeof(savestate));
+                if (rc < 0) {
+                        dev_err(&dev->dev, "error while saving TPM state\n");
+                        return rc;
+                }
+        }
+        return 0;
+}
+
+static int tpm_inf_pnp_resume(struct pnp_dev *dev)
+{
+        /* Re-configure TPM after suspending */
+        tpm_config_out(ENABLE_REGISTER_PAIR, TPM_INF_ADDR);
+        tpm_config_out(IOLIMH, TPM_INF_ADDR);
+        tpm_config_out((tpm_dev.data_regs >> 8) & 0xff, TPM_INF_DATA);
+        tpm_config_out(IOLIML, TPM_INF_ADDR);
+        tpm_config_out((tpm_dev.data_regs & 0xff), TPM_INF_DATA);
+        /* activate register */
+        tpm_config_out(TPM_DAR, TPM_INF_ADDR);
+        tpm_config_out(0x01, TPM_INF_DATA);
+        tpm_config_out(DISABLE_REGISTER_PAIR, TPM_INF_ADDR);
+        /* disable RESET, LP and IRQC */
+        tpm_data_out(RESET_LP_IRQC_DISABLE, CMD);
+        return tpm_pm_resume(&dev->dev);
+}
+
 static struct pnp_driver tpm_inf_pnp_driver = {
         .name = "tpm_inf_pnp",
-        .driver = {
-                .owner = THIS_MODULE,
-                .suspend = tpm_pm_suspend,
-                .resume = tpm_pm_resume,
-        },
-        .id_table = tpm_pnp_tbl,
+        .id_table = tpm_inf_pnp_tbl,
         .probe = tpm_inf_pnp_probe,
-        .remove = __devexit_p(tpm_inf_pnp_remove),
+        .suspend = tpm_inf_pnp_suspend,
+        .resume = tpm_inf_pnp_resume,
+        .remove = __devexit_p(tpm_inf_pnp_remove)
 };
 
 static int __init init_inf(void)
@@ -638,5 +673,5 @@ module_exit(cleanup_inf);
 
 MODULE_AUTHOR("Marcel Selhorst <m.selhorst@sirrix.com>");
 MODULE_DESCRIPTION("Driver for Infineon TPM SLD 9630 TT 1.1 / SLB 9635 TT 1.2");
-MODULE_VERSION("1.9");
+MODULE_VERSION("1.9.2");
 MODULE_LICENSE("GPL");
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index c6f3b48be9dd..dcb9083ecde0 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -1951,8 +1951,10 @@ static int tty_fasync(int fd, struct file *filp, int on)
                         pid = task_pid(current);
                         type = PIDTYPE_PID;
                 }
-                retval = __f_setown(filp, pid, type, 0);
+                get_pid(pid);
                 spin_unlock_irqrestore(&tty->ctrl_lock, flags);
+                retval = __f_setown(filp, pid, type, 0);
+                put_pid(pid);
                 if (retval)
                         goto out;
         } else {
diff --git a/drivers/char/uv_mmtimer.c b/drivers/char/uv_mmtimer.c
index 867b67be9f0a..c7072ba14f48 100644
--- a/drivers/char/uv_mmtimer.c
+++ b/drivers/char/uv_mmtimer.c
@@ -89,13 +89,17 @@ static long uv_mmtimer_ioctl(struct file *file, unsigned int cmd,
         switch (cmd) {
         case MMTIMER_GETOFFSET: /* offset of the counter */
                 /*
-                 * UV RTC register is on its own page
+                 * Starting with HUB rev 2.0, the UV RTC register is
+                 * replicated across all cachelines of it's own page.
+                 * This allows faster simultaneous reads from a given socket.
+                 *
+                 * The offset returned is in 64 bit units.
                  */
-                if (PAGE_SIZE <= (1 << 16))
-                        ret = ((UV_LOCAL_MMR_BASE | UVH_RTC) & (PAGE_SIZE-1))
-                                / 8;
+                if (uv_get_min_hub_revision_id() == 1)
+                        ret = 0;
                 else
-                        ret = -ENOSYS;
+                        ret = ((uv_blade_processor_id() * L1_CACHE_BYTES) %
+                                        PAGE_SIZE) / 8;
                 break;
 
         case MMTIMER_GETRES: /* resolution of the clock in 10^-15 s */
@@ -115,8 +119,8 @@ static long uv_mmtimer_ioctl(struct file *file, unsigned int cmd,
                 ret = hweight64(UVH_RTC_REAL_TIME_CLOCK_MASK);
                 break;
 
-        case MMTIMER_MMAPAVAIL: /* can we mmap the clock into userspace? */
-                ret = (PAGE_SIZE <= (1 << 16)) ? 1 : 0;
+        case MMTIMER_MMAPAVAIL:
+                ret = 1;
                 break;
 
         case MMTIMER_GETCOUNTER: