A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-10 22:40:54 -04:00
Code Issues Projects Releases Packages Wiki Activity

fix random crashes due to floating point operation

Browse source 
Unprotected floating point operation in kernel might corrupt
NEON register and cause many random native crashes.
Add kernel_neon_begin and kenrel_neon_end to protect floating
point operation in wt6670f module.

Change-Id: I2a3a4a3ac1ce78513211ca669eb25c808653f0cc
Reviewed-on: https://gerrit.mot.com/2251071
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Reviewed-by: Wang Wang <wangwang1@lenovo.com>
Submit-Approved: Jira Key
This commit is contained in:
liujg6 2022-04-24 10:11:52 +08:00 • committed by Jianguo Liu
commit 11664d82f8
1 changed files with 5 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

6
drivers/power/mmi_qc3p_wt6670f/wt6670f_qc3p.c
View file

@ -20,6 +20,7 @@
#include "wt6670f.h"
#include <linux/proc_fs.h>
#include <linux/uaccess.h>
#include <asm/neon.h>
#define MAX_USER_STR 1024
@ -154,7 +155,10 @@ static u16 wt6670f_get_vbus_voltage(void)
pr_err(">>>>>>wt6670f get vbus voltage = %04x %02x %02x\n", tmp,
data[0], data[1]);
return (u16)(tmp * 18.98);
kernel_neon_begin();
tmp = (u16)(tmp * 18.98);
kernel_neon_end();
return tmp;
}
static u16 wt6670f_get_id(u8 reg)