A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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Merge "qseecom: retry scm call if app is busy"

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This commit is contained in:
qctecmdr 2021-05-28 07:39:57 -07:00 • committed by Gerrit - the friendly Code Review server
commit 67951e4d8e
1 changed files with 4 additions and 2 deletions
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6
drivers/misc/qseecom.c
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@ -470,6 +470,8 @@ static void __qseecom_free_coherent_buf(uint32_t size,
#define QSEECOM_SCM_EBUSY_WAIT_MS 30
#define QSEECOM_SCM_EBUSY_MAX_RETRY 67
#define QSEE_RESULT_FAIL_APP_BUSY 315
static int __qseecom_scm_call2_locked(uint32_t smc_id, struct scm_desc *desc)
{
int ret = 0;
@ -477,14 +479,14 @@ static int __qseecom_scm_call2_locked(uint32_t smc_id, struct scm_desc *desc)
do {
ret = qcom_scm_qseecom_call_noretry(smc_id, desc);
if (ret == -EBUSY) {
if ((ret == -EBUSY) || (desc && (desc->ret[0] == -QSEE_RESULT_FAIL_APP_BUSY))) {
mutex_unlock(&app_access_lock);
msleep(QSEECOM_SCM_EBUSY_WAIT_MS);
mutex_lock(&app_access_lock);
}
if (retry_count == 33)
pr_warn("secure world has been busy for 1 second!\n");
} while (ret == -EBUSY &&
} while (((ret == -EBUSY) || (desc && (desc->ret[0] == -QSEE_RESULT_FAIL_APP_BUSY))) &&
(retry_count++ < QSEECOM_SCM_EBUSY_MAX_RETRY));
return ret;
}