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https://github.com/Divested-Mobile/DivestOS-Build.git
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76 lines
2.5 KiB
Diff
76 lines
2.5 KiB
Diff
From 01db0e012f86b8ba6974e5cb9905261a552a0610 Mon Sep 17 00:00:00 2001
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From: Sureshnaidu Laveti <lsuresh@codeaurora.org>
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Date: Thu, 15 Dec 2016 02:39:35 -0800
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Subject: msm: sensor: validating the flash initialization parameters
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Copying the flash initialization parameters from userspace memory to
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kernel memory and in turn checking for the validity of the flash
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initialization parameters pointer sent from userspace.
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CRs-Fixed: 1091603
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Change-Id: I17d57016c254fb6628844a152b0e7d45c0b23b2d
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Signed-off-by: Sureshnaidu Laveti <lsuresh@codeaurora.org>
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---
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.../msm/camera_v2/sensor/flash/msm_flash.c | 38 +++++++++++++++++++++-
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1 file changed, 37 insertions(+), 1 deletion(-)
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diff --git a/drivers/media/platform/msm/camera_v2/sensor/flash/msm_flash.c b/drivers/media/platform/msm/camera_v2/sensor/flash/msm_flash.c
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index ff0a0a5..71d3e61 100644
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--- a/drivers/media/platform/msm/camera_v2/sensor/flash/msm_flash.c
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+++ b/drivers/media/platform/msm/camera_v2/sensor/flash/msm_flash.c
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@@ -491,6 +491,42 @@ static int32_t msm_flash_init(
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return 0;
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}
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+#ifdef CONFIG_COMPAT
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+static int32_t msm_flash_init_prepare(
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+ struct msm_flash_ctrl_t *flash_ctrl,
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+ struct msm_flash_cfg_data_t *flash_data)
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+{
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+ return msm_flash_init(flash_ctrl, flash_data);
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+}
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+#else
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+static int32_t msm_flash_init_prepare(
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+ struct msm_flash_ctrl_t *flash_ctrl,
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+ struct msm_flash_cfg_data_t *flash_data)
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+{
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+ struct msm_flash_cfg_data_t flash_data_k;
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+ struct msm_flash_init_info_t flash_init_info;
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+ int32_t i = 0;
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+
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+ flash_data_k.cfg_type = flash_data->cfg_type;
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+ for (i = 0; i < MAX_LED_TRIGGERS; i++) {
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+ flash_data_k.flash_current[i] =
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+ flash_data->flash_current[i];
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+ flash_data_k.flash_duration[i] =
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+ flash_data->flash_duration[i];
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+ }
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+
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+ flash_data_k.cfg.flash_init_info = &flash_init_info;
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+ if (copy_from_user(&flash_init_info,
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+ (void *)(flash_data->cfg.flash_init_info),
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+ sizeof(struct msm_flash_init_info_t))) {
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+ pr_err("%s copy_from_user failed %d\n",
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+ __func__, __LINE__);
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+ return -EFAULT;
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+ }
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+ return msm_flash_init(flash_ctrl, &flash_data_k);
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+}
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+#endif
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+
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static int32_t msm_flash_low(
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struct msm_flash_ctrl_t *flash_ctrl,
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struct msm_flash_cfg_data_t *flash_data)
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@@ -592,7 +628,7 @@ static int32_t msm_flash_config(struct msm_flash_ctrl_t *flash_ctrl,
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switch (flash_data->cfg_type) {
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case CFG_FLASH_INIT:
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- rc = msm_flash_init(flash_ctrl, flash_data);
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+ rc = msm_flash_init_prepare(flash_ctrl, flash_data);
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break;
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case CFG_FLASH_RELEASE:
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if (flash_ctrl->flash_state != MSM_CAMERA_FLASH_RELEASE) {
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--
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cgit v1.1
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