diff options
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/char/agp/frontend.c | 1 | ||||
| -rw-r--r-- | drivers/char/agp/generic.c | 1 | ||||
| -rw-r--r-- | drivers/char/cyclades.c | 1 | ||||
| -rw-r--r-- | drivers/char/drm/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/char/hangcheck-timer.c | 2 | ||||
| -rw-r--r-- | drivers/char/random.c | 67 | ||||
| -rw-r--r-- | drivers/char/watchdog/booke_wdt.c | 2 |
8 files changed, 45 insertions, 33 deletions
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig index abcafac6473..ef683ebd367 100644 --- a/drivers/char/Kconfig +++ b/drivers/char/Kconfig @@ -815,7 +815,7 @@ config SGI_IP27_RTC config GEN_RTC tristate "Generic /dev/rtc emulation" - depends on RTC!=y && !IA64 && !ARM && !M32R && !SPARC && !FRV && !S390 + depends on RTC!=y && !IA64 && !ARM && !M32R && !SPARC && !FRV && !S390 && !SUPERH ---help--- If you say Y here and create a character special file /dev/rtc with major number 10 and minor number 135 using mknod ("man mknod"), you diff --git a/drivers/char/agp/frontend.c b/drivers/char/agp/frontend.c index 679d7f97243..c7ed617aa7f 100644 --- a/drivers/char/agp/frontend.c +++ b/drivers/char/agp/frontend.c @@ -37,6 +37,7 @@ #include <linux/agpgart.h> #include <linux/slab.h> #include <linux/mm.h> +#include <linux/sched.h> #include <asm/uaccess.h> #include <asm/pgtable.h> #include "agp.h" diff --git a/drivers/char/agp/generic.c b/drivers/char/agp/generic.c index 45aeb917ec6..d535c406b31 100644 --- a/drivers/char/agp/generic.c +++ b/drivers/char/agp/generic.c @@ -37,6 +37,7 @@ #include <linux/vmalloc.h> #include <linux/dma-mapping.h> #include <linux/mm.h> +#include <linux/sched.h> #include <asm/io.h> #include <asm/cacheflush.h> #include <asm/pgtable.h> diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c index c72ee97d389..ca376b92162 100644 --- a/drivers/char/cyclades.c +++ b/drivers/char/cyclades.c @@ -1061,6 +1061,7 @@ static void cyy_intr_chip(struct cyclades_card *cinfo, int chip, if (data & info->ignore_status_mask) { info->icount.rx++; + spin_unlock(&cinfo->card_lock); return; } if (tty_buffer_request_room(tty, 1)) { diff --git a/drivers/char/drm/Kconfig b/drivers/char/drm/Kconfig index ef833a1c27e..0b7ffa5191c 100644 --- a/drivers/char/drm/Kconfig +++ b/drivers/char/drm/Kconfig @@ -6,7 +6,7 @@ # config DRM tristate "Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)" - depends on (AGP || AGP=n) && PCI + depends on (AGP || AGP=n) && PCI && !EMULATED_CMPXCHG help Kernel-level support for the Direct Rendering Infrastructure (DRI) introduced in XFree86 4.0. If you say Y here, you need to select diff --git a/drivers/char/hangcheck-timer.c b/drivers/char/hangcheck-timer.c index f0e7263dfcd..0e8ceea5ea7 100644 --- a/drivers/char/hangcheck-timer.c +++ b/drivers/char/hangcheck-timer.c @@ -48,7 +48,7 @@ #include <linux/delay.h> #include <asm/uaccess.h> #include <linux/sysrq.h> - +#include <linux/timer.h> #define VERSION_STR "0.9.0" diff --git a/drivers/char/random.c b/drivers/char/random.c index 46c1b97748b..0474cac4a84 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -760,7 +760,7 @@ static size_t account(struct entropy_store *r, size_t nbytes, int min, static void extract_buf(struct entropy_store *r, __u8 *out) { - int i, x; + int i; __u32 data[16], buf[5 + SHA_WORKSPACE_WORDS]; sha_init(buf); @@ -772,9 +772,11 @@ static void extract_buf(struct entropy_store *r, __u8 *out) * attempts to find previous ouputs), unless the hash * function can be inverted. */ - for (i = 0, x = 0; i < r->poolinfo->poolwords; i += 16, x+=2) { - sha_transform(buf, (__u8 *)r->pool+i, buf + 5); - add_entropy_words(r, &buf[x % 5], 1); + for (i = 0; i < r->poolinfo->poolwords; i += 16) { + /* hash blocks of 16 words = 512 bits */ + sha_transform(buf, (__u8 *)(r->pool + i), buf + 5); + /* feed back portion of the resulting hash */ + add_entropy_words(r, &buf[i % 5], 1); } /* @@ -782,7 +784,7 @@ static void extract_buf(struct entropy_store *r, __u8 *out) * portion of the pool while mixing, and hash one * final time. */ - __add_entropy_words(r, &buf[x % 5], 1, data); + __add_entropy_words(r, &buf[i % 5], 1, data); sha_transform(buf, (__u8 *)data, buf + 5); /* @@ -1018,37 +1020,44 @@ random_poll(struct file *file, poll_table * wait) return mask; } -static ssize_t -random_write(struct file * file, const char __user * buffer, - size_t count, loff_t *ppos) +static int +write_pool(struct entropy_store *r, const char __user *buffer, size_t count) { - int ret = 0; size_t bytes; __u32 buf[16]; const char __user *p = buffer; - size_t c = count; - while (c > 0) { - bytes = min(c, sizeof(buf)); + while (count > 0) { + bytes = min(count, sizeof(buf)); + if (copy_from_user(&buf, p, bytes)) + return -EFAULT; - bytes -= copy_from_user(&buf, p, bytes); - if (!bytes) { - ret = -EFAULT; - break; - } - c -= bytes; + count -= bytes; p += bytes; - add_entropy_words(&input_pool, buf, (bytes + 3) / 4); - } - if (p == buffer) { - return (ssize_t)ret; - } else { - struct inode *inode = file->f_path.dentry->d_inode; - inode->i_mtime = current_fs_time(inode->i_sb); - mark_inode_dirty(inode); - return (ssize_t)(p - buffer); + add_entropy_words(r, buf, (bytes + 3) / 4); } + + return 0; +} + +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) + return ret; + ret = write_pool(&nonblocking_pool, buffer, count); + if (ret) + return ret; + + inode->i_mtime = current_fs_time(inode->i_sb); + mark_inode_dirty(inode); + return (ssize_t)count; } static int @@ -1087,8 +1096,8 @@ random_ioctl(struct inode * inode, struct file * file, return -EINVAL; if (get_user(size, p++)) return -EFAULT; - retval = random_write(file, (const char __user *) p, - size, &file->f_pos); + retval = write_pool(&input_pool, (const char __user *)p, + size); if (retval < 0) return retval; credit_entropy_store(&input_pool, ent_count); diff --git a/drivers/char/watchdog/booke_wdt.c b/drivers/char/watchdog/booke_wdt.c index 0e23f29f71a..0f5c77ddd39 100644 --- a/drivers/char/watchdog/booke_wdt.c +++ b/drivers/char/watchdog/booke_wdt.c @@ -24,7 +24,7 @@ #include <asm/uaccess.h> #include <asm/system.h> -/* If the kernel parameter wdt_enable=1, the watchdog will be enabled at boot. +/* If the kernel parameter wdt=1, the watchdog will be enabled at boot. * Also, the wdt_period sets the watchdog timer period timeout. * For E500 cpus the wdt_period sets which bit changing from 0->1 will * trigger a watchog timeout. This watchdog timeout will occur 3 times, the |