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Deleate fts_system_reset in wait_for_ready

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TP:
There may be a problem of function recursive calling.

[ 72.152265] Kernel panic - not syncing: kernel stack overflow
[ 72.152270] CPU: 2 PID: 515 Comm: modprobe Tainted: G S O 5.4.61-moto-00155-gb5a835fac66e #1
[ 72.152273] Hardware name: Berlin (DT)
[ 72.152277] Call trace:
[ 72.152283] dump_backtrace.cfi_jt+0x0/0x4
[ 72.152289] show_stack+0x18/0x24
[ 72.152296] dump_stack+0xb8/0x114
[ 72.152302] panic+0x188/0x3f0
[ 72.152306] nmi_panic+0x98/0xb8
[ 72.152311] handle_bad_stack+0x11c/0x130
[ 72.152317] __bad_stack+0xc8/0xcc
[ 72.152322] update_group_capacity+0x4/0x290
[ 72.152326] find_busiest_group+0xe0/0x834
[ 72.152331] load_balance+0x2b0/0xe7c
[ 72.152336] newidle_balance+0x2f4/0x5d4
[ 72.152341] pick_next_task_fair+0x40/0x664
[ 72.152347] __schedule+0x290/0x8ac
[ 72.152351] schedule+0x8c/0xc0
[ 72.152356] schedule_timeout+0x90/0x120
[ 72.152361] wait_for_common+0xd0/0x16c
[ 72.152366] wait_for_completion_timeout+0x14/0x20
[ 72.152372] geni_i2c_xfer+0x3d8/0x12fc
[ 72.152379] __i2c_transfer+0x2a4/0x8d8
[ 72.152383] i2c_transfer+0xd4/0x1a4
[ 72.152412] fts_writeReadU8UX+0x1ac/0x290 [stmicro_mmi]
[ 72.152433] pollForEvent+0xc0/0x378 [stmicro_mmi]
[ 72.152454] fts_system_reset+0x104/0x268 [stmicro_mmi]
[ 72.152475] fts_system_reset+0x11c/0x268 [stmicro_mmi]

Change-Id: I0f09ef7edd856b21afe71866fc260208184807c0
Reviewed-on: https://gerrit.mot.com/1960709
Reviewed-by: Jichao Zou <zoujc@motorola.com>
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Submit-Approved: Jira Key
This commit is contained in:
litong20 2021-05-26 17:10:07 +08:00 • committed by litong
commit 8899397ed7
2 changed files with 2 additions and 13 deletions
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13
drivers/input/touchscreen/stmicro_mmi/fts_lib/ftsCore.c
View file

@ -96,23 +96,12 @@ void setResetGpio(int gpio)
int fts_wait_for_ready(void)
{
int ret = -1;
int i;
u8 readData[FIFO_EVENT_SIZE];
int event_to_search;
event_to_search = (int)EVT_ID_CONTROLLER_READY;
for (i = 0; i < 3; i++) {
ret = pollForEvent(&event_to_search, 1, readData, GENERAL_TIMEOUT);
if (ret == ERROR_TIMEOUT || ret == ERROR_BUS_R)
fts_system_reset();
else
return ret;
}
logError(1, "%s fts_wait_for_ready Failed\n", tag);
return ret;
return pollForEvent(&event_to_search, 1, readData, GENERAL_TIMEOUT);
}
/**

2
drivers/input/touchscreen/stmicro_mmi/fts_mmi_class.c
View file

@ -646,7 +646,7 @@ static int fts_mmi_refresh_rate(struct device *dev, int freq)
board->report_rate_cmd[2] = 0x00;
if (ts->report_rate == board->report_rate_cmd[2]) {
pr_info("value is same,so not write.\n");
dev_dbg(dev, "%s: value is same, so not write.\n", __func__);
return 0;
}