diff options
| author | Arjan van de Ven <arjan@linux.intel.com> | 2009-10-01 22:48:40 (GMT) |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2009-10-28 15:49:37 (GMT) |
| commit | 52a2b11cafb1b14bacfc65a20966da5ba3a863e1 (patch) | |
| tree | 0400a7b6aecaac81bd9fa71fa30292120ee0840c | |
| parent | 012abeea669ea49636cf952d13298bb68654146a (diff) | |
| download | linux-52a2b11cafb1b14bacfc65a20966da5ba3a863e1.tar.xz | |
ACPI: clean up video.c boundary checks and types
proc.c and video.c are a bit sloppy around types and style,
confusing gcc for a new feature that'll be in 2.6.33 and will
cause a warning on the current code.
This patch changes
if (foo + 1 > sizeof bar)
into
if (foo >= sizeof(bar))
which is more kernel-style.
it also changes a variable in proc.c to unsigned; it gets assigned
a value from an unsigned type, and is then only compared for > not
for negative, so using unsigned is just outright the right type
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
| -rw-r--r-- | drivers/acpi/proc.c | 2 | ||||
| -rw-r--r-- | drivers/acpi/video.c | 8 |
2 files changed, 5 insertions, 5 deletions
diff --git a/drivers/acpi/proc.c b/drivers/acpi/proc.c index f8b6f55..d0d25e2 100644 --- a/drivers/acpi/proc.c +++ b/drivers/acpi/proc.c @@ -393,7 +393,7 @@ acpi_system_write_wakeup_device(struct file *file, struct list_head *node, *next; char strbuf[5]; char str[5] = ""; - int len = count; + unsigned int len = count; struct acpi_device *found_dev = NULL; if (len > 4) diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index 64e3c58..05dff63 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -1223,7 +1223,7 @@ acpi_video_device_write_state(struct file *file, u32 state = 0; - if (!dev || count + 1 > sizeof str) + if (!dev || count >= sizeof(str)) return -EINVAL; if (copy_from_user(str, buffer, count)) @@ -1280,7 +1280,7 @@ acpi_video_device_write_brightness(struct file *file, int i; - if (!dev || !dev->brightness || count + 1 > sizeof str) + if (!dev || !dev->brightness || count >= sizeof(str)) return -EINVAL; if (copy_from_user(str, buffer, count)) @@ -1562,7 +1562,7 @@ acpi_video_bus_write_POST(struct file *file, unsigned long long opt, options; - if (!video || count + 1 > sizeof str) + if (!video || count >= sizeof(str)) return -EINVAL; status = acpi_video_bus_POST_options(video, &options); @@ -1602,7 +1602,7 @@ acpi_video_bus_write_DOS(struct file *file, unsigned long opt; - if (!video || count + 1 > sizeof str) + if (!video || count >= sizeof(str)) return -EINVAL; if (copy_from_user(str, buffer, count)) |