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Groups > linux.kernel > #1707416
| From | SF Markus Elfring <elfring@users.sourceforge.net> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v2 1/9] ACPI-video: Use kmalloc_array() in acpi_video_get_levels() |
| Date | 2017-08-09 17:40 +0200 |
| Message-ID | <ucBfs-Mz-11@gated-at.bofh.it> (permalink) |
| References | (3 earlier) <seffb-4Kg-7@gated-at.bofh.it> <semJH-1kY-9@gated-at.bofh.it> <sepod-36Y-1@gated-at.bofh.it> <sevN0-7ef-19@gated-at.bofh.it> <ucBfr-Mz-7@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Wed, 9 Aug 2017 14:52:25 +0200
A multiplication for the size determination of a memory allocation
indicated that an array data structure should be processed.
Thus use the corresponding function "kmalloc_array".
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
drivers/acpi/acpi_video.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/acpi/acpi_video.c b/drivers/acpi/acpi_video.c
index 0972ec0e2eb8..1aaf2b591ca8 100644
--- a/drivers/acpi/acpi_video.c
+++ b/drivers/acpi/acpi_video.c
@@ -832,8 +832,9 @@ int acpi_video_get_levels(struct acpi_device *device,
* in order to account for buggy BIOS which don't export the first two
* special levels (see below)
*/
- br->levels = kmalloc((obj->package.count + ACPI_VIDEO_FIRST_LEVEL) *
- sizeof(*br->levels), GFP_KERNEL);
+ br->levels = kmalloc_array(obj->package.count + ACPI_VIDEO_FIRST_LEVEL,
+ sizeof(*br->levels),
+ GFP_KERNEL);
if (!br->levels) {
result = -ENOMEM;
goto out_free;
--
2.13.4
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[PATCH v2 0/9] ACPI-video: Fine-tuning for several function implementations SF Markus Elfring <elfring@users.sourceforge.net> - 2017-08-09 17:40 +0200 [PATCH v2 1/9] ACPI-video: Use kmalloc_array() in acpi_video_get_levels() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-08-09 17:40 +0200 [PATCH v2 3/9] ACPI-video: Delete an error message for a failed kzalloc() call SF Markus Elfring <elfring@users.sourceforge.net> - 2017-08-09 17:40 +0200 [PATCH v2 2/9] ACPI-video: Return directly after a failed device query SF Markus Elfring <elfring@users.sourceforge.net> - 2017-08-09 17:40 +0200 [PATCH v2 9/9] ACPI-video: Improve a size determination in four functions SF Markus Elfring <elfring@users.sourceforge.net> - 2017-08-09 17:50 +0200 [PATCH v2 8/9] ACPI-video: Move four assignments in acpi_video_get_levels() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-08-09 17:50 +0200 [PATCH v2 4/9] ACPI-video: Return directly after a failed input_allocate_device() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-08-09 17:50 +0200 [PATCH v2 6/9] ACPI-video: Improve a jump target in acpi_video_switch_brightness() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-08-09 17:50 +0200 [PATCH v2 7/9] ACPI-video: Delete an unnecessary initialisation in three functions SF Markus Elfring <elfring@users.sourceforge.net> - 2017-08-09 17:50 +0200 [PATCH v2 5/9] ACPI-video: Delete unnecessary if statement in acpi_video_switch_brightness() SF Markus Elfring <elfring@users.sourceforge.net> - 2017-08-09 17:50 +0200
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