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 06:09:23 -04:00
Code Issues Projects Releases Packages Wiki Activity

mhi: core: Do a null pointer check before reading debug registers

Browse source 
Not all registers can be set while dumping debug registers depending
on the state of the device. For example, wake doorbell is not set
until a READY state of the device is reached. Hence, we could access
a NULL pointer while dumping debug registers. Avoid this by adding a
check to skip the addresses which are not yet set.

Change-Id: Iccf275705d87023613ad3ab0c2ab53bad7ab912a
Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
This commit is contained in:
Bhaumik Bhatt 2020-05-28 16:56:21 -07:00
commit 48dcddd380
1 changed files with 2 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

2
drivers/bus/mhi/core/mhi_main.c
View file

@ -2673,6 +2673,8 @@ void mhi_debug_reg_dump(struct mhi_controller *mhi_cntrl)
TO_MHI_STATE_STR(state));
for (i = 0; debug_reg[i].name; i++) {
if (!debug_reg[i].base)
continue;
ret = mhi_read_reg(mhi_cntrl, debug_reg[i].base,
debug_reg[i].offset, &val);
MHI_LOG("reg:%s val:0x%x, ret:%d\n", debug_reg[i].name, val,