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ipm_quark_se: lock irqs while waiting for status bit to clear

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Change-Id: Ieb0ac7a32a91826dca39ddb6bec80081c7d2c888
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This commit is contained in:
Andrew Boie 2016-01-07 08:52:32 -08:00 committed by Anas Nashif
parent 06e78de681
commit cb5022fdba
1 changed files with 4 additions and 0 deletions
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4
drivers/ipm/ipm_quark_se.c
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@ -63,6 +63,7 @@ void quark_se_ipm_isr(void *param)
struct quark_se_ipm_config_info *config;
struct quark_se_ipm_driver_data *driver_data;
volatile struct quark_se_ipm *ipm;
unsigned int key;
ARG_UNUSED(param);
sts = quark_se_ipm_sts_get();
@ -81,6 +82,8 @@ void quark_se_ipm_isr(void *param)
driver_data->callback(driver_data->callback_ctx, ipm->ctrl.ctrl,
&ipm->data);
key = irq_lock();
ipm->sts.irq = 1; /* Clear the interrupt bit */
ipm->sts.sts = 1; /* Clear channel status bit */
@ -90,6 +93,7 @@ void quark_se_ipm_isr(void *param)
while (quark_se_ipm_sts_get() & (0x3 << (channel * 2))) {
/* Busy-wait */
}
irq_unlock(key);
}