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author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-05-19 18:24:11 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-05-19 18:24:11 -0700 |
commit | 39ab05c8e0b519ff0a04a869f065746e6e8c3d95 (patch) | |
tree | e73f0ba74c4ea7a80dff9b2dd9445a3a74190e28 /drivers/uio/uio.c | |
parent | 1477fcc290b3d5c2614bde98bf3b1154c538860d (diff) | |
parent | c42d2237143fcf35cff642cefe2bcf7786aae312 (diff) | |
download | kernel_samsung_aries-39ab05c8e0b519ff0a04a869f065746e6e8c3d95.zip kernel_samsung_aries-39ab05c8e0b519ff0a04a869f065746e6e8c3d95.tar.gz kernel_samsung_aries-39ab05c8e0b519ff0a04a869f065746e6e8c3d95.tar.bz2 |
Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
* 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (44 commits)
debugfs: Silence DEBUG_STRICT_USER_COPY_CHECKS=y warning
sysfs: remove "last sysfs file:" line from the oops messages
drivers/base/memory.c: fix warning due to "memory hotplug: Speed up add/remove when blocks are larger than PAGES_PER_SECTION"
memory hotplug: Speed up add/remove when blocks are larger than PAGES_PER_SECTION
SYSFS: Fix erroneous comments for sysfs_update_group().
driver core: remove the driver-model structures from the documentation
driver core: Add the device driver-model structures to kerneldoc
Translated Documentation/email-clients.txt
RAW driver: Remove call to kobject_put().
reboot: disable usermodehelper to prevent fs access
efivars: prevent oops on unload when efi is not enabled
Allow setting of number of raw devices as a module parameter
Introduce CONFIG_GOOGLE_FIRMWARE
driver: Google Memory Console
driver: Google EFI SMI
x86: Better comments for get_bios_ebda()
x86: get_bios_ebda_length()
misc: fix ti-st build issues
params.c: Use new strtobool function to process boolean inputs
debugfs: move to new strtobool
...
Fix up trivial conflicts in fs/debugfs/file.c due to the same patch
being applied twice, and an unrelated cleanup nearby.
Diffstat (limited to 'drivers/uio/uio.c')
-rw-r--r-- | drivers/uio/uio.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c index 51fe179..d2efe82 100644 --- a/drivers/uio/uio.c +++ b/drivers/uio/uio.c @@ -381,7 +381,13 @@ static int uio_get_minor(struct uio_device *idev) retval = -ENOMEM; goto exit; } - idev->minor = id & MAX_ID_MASK; + if (id < UIO_MAX_DEVICES) { + idev->minor = id; + } else { + dev_err(idev->dev, "too many uio devices\n"); + retval = -EINVAL; + idr_remove(&uio_idr, id); + } exit: mutex_unlock(&minor_lock); return retval; @@ -587,14 +593,12 @@ static ssize_t uio_write(struct file *filep, const char __user *buf, static int uio_find_mem_index(struct vm_area_struct *vma) { - int mi; struct uio_device *idev = vma->vm_private_data; - for (mi = 0; mi < MAX_UIO_MAPS; mi++) { - if (idev->info->mem[mi].size == 0) + if (vma->vm_pgoff < MAX_UIO_MAPS) { + if (idev->info->mem[vma->vm_pgoff].size == 0) return -1; - if (vma->vm_pgoff == mi) - return mi; + return (int)vma->vm_pgoff; } return -1; } |