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authorAxel Lin <axel.lin@ingics.com>2017-04-14 10:50:43 +0800
committerMark Brown <broonie@kernel.org>2017-04-14 18:01:03 +0100
commita9bbb453b50c91295ab362e4832eb37fd4e6785d (patch)
treecf548ad6e42a431228f1d360905ef3ad852db6da /drivers/regulator/vctrl-regulator.c
parent9dee7a72d0c7cdfa2573c48b1e5f928c721d54d5 (diff)
regulator: vctrl: Fix out of bounds array access for vctrl->vtable
Current code only allocates rdesc->n_voltages entries for vctrl->vtable. Thus use rdesc->n_voltages instead of n_voltages in the for loop. While at it, also switch to use devm_kcalloc instead of devm_kmalloc_array + __GFP_ZERO flag and fix the argument order. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator/vctrl-regulator.c')
-rw-r--r--drivers/regulator/vctrl-regulator.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/regulator/vctrl-regulator.c b/drivers/regulator/vctrl-regulator.c
index 6baadef0ed74..78de002037c7 100644
--- a/drivers/regulator/vctrl-regulator.c
+++ b/drivers/regulator/vctrl-regulator.c
@@ -345,9 +345,9 @@ static int vctrl_init_vtable(struct platform_device *pdev)
return -EINVAL;
}
- vctrl->vtable = devm_kmalloc_array(
- &pdev->dev, sizeof(struct vctrl_voltage_table),
- rdesc->n_voltages, GFP_KERNEL | __GFP_ZERO);
+ vctrl->vtable = devm_kcalloc(&pdev->dev, rdesc->n_voltages,
+ sizeof(struct vctrl_voltage_table),
+ GFP_KERNEL);
if (!vctrl->vtable)
return -ENOMEM;
@@ -371,7 +371,7 @@ static int vctrl_init_vtable(struct platform_device *pdev)
NULL);
/* pre-calculate OVP-safe downward transitions */
- for (i = n_voltages - 1; i > 0; i--) {
+ for (i = rdesc->n_voltages - 1; i > 0; i--) {
int j;
int ovp_min_uV = (vctrl->vtable[i].out *
(100 - vctrl->ovp_threshold)) / 100;