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input: misc: qcom-hv-haptics: check nvmem before using it

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Currently, nvmem device is used to store closed loop brake settings. If
nvmem-cells is not specified for closed loop brake, then nvmem device
can be NULL. For such case, skip updating closed loop brake settings by
not writing to the nvmem device.

Change-Id: I18d455814f3731af519949f21a3a553bd1692548
Signed-off-by: Fenglin Wu <fenglinw@codeaurora.org>
This commit is contained in:
Fenglin Wu 2020-04-28 09:00:52 +08:00
commit a7b2b418ea
1 changed files with 3 additions and 0 deletions
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3
drivers/input/misc/qcom-hv-haptics.c
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@ -1478,6 +1478,9 @@ static int haptics_store_cl_brake_settings(struct haptics_chip *chip)
int rc = 0;
u8 val;
if (!chip->cl_brake_nvmem)
return 0;
val = MOD_STATUS_SEL_BRAKE_CAL_RNAT_RCAL_VAL;
rc = haptics_write(chip, chip->cfg_addr_base,
HAP_CFG_MOD_STATUS_SEL_REG, &val, 1);